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{{Redirect|LilyPad||Lily pad (disambiguation)}}
{{Other uses|Arduino (disambiguation)}}
{{Infobox information appliance
| name = Arduino
| logo = [[File:Arduino_Logo_Registered.svg|50px]] [[File:Genuino-Logo.svg|50px]]
| image = [[File:Arduino Uno - R3.jpg|220px]]
| caption = [[Arduino Uno]] SMD R3
| manufacturer = Arduino
| type = [[Single-board microcontroller]]
| cpu = {{Plain list|
* [[Atmel AVR]] (8-bit)
* [[ARM Cortex-M0+]] (32-bit)
* [[ARM Cortex-M3]] (32-bit)
* [[Intel Quark]] ([[x86]]) (32-bit)
}}
| storage = [[Flash memory|Flash]], [[EEPROM]]
| memory = [[Static random-access memory|SRAM]]
| os = None (default) <br> [[Xinu]]
| website = {{URL|https://www.arduino.cc/|arduino.cc}}
}}
'''Arduino''' ({{IPAc-en|ɑː|r|ˈ|d|w|iː|n|oʊ}}) is an Italian [[open-source hardware]] and [[open-source software|software]] company, project, and user community that designs and manufactures [[single-board microcontroller]]s and [[microcontroller]] kits for building digital devices. Its hardware products are licensed under a [[Creative Commons license|CC BY-SA license]], while the software is licensed under the [[GNU Lesser General Public License]] (LGPL) or the [[GNU General Public License]] (GPL),<ref>{{Cite web |title=Getting Started: FOUNDATION > Introduction |url=https://www.arduino.cc/en/guide/introduction |url-status=dead |archive-url=https://web.archive.org/web/20170829015201/https://www.arduino.cc/en/Guide/Introduction |archive-date=2017-08-29 |access-date=2017-05-23 |website=arduino.cc}}</ref> permitting the [[manufacture]] of Arduino boards and software distribution by anyone. Arduino boards are available commercially from the official [[website]] or through authorized distributors.<ref>{{Cite web |title=Arduino - Home |url=https://www.arduino.cc/ |access-date=2022-10-27 |website=www.arduino.cc}}</ref>
Arduino board designs use a variety of [[microprocessor]]s and controllers. The boards are equipped with sets of digital and analog [[input/output]] (I/O) pins that may be interfaced to various expansion boards ('shields') or [[breadboards]] (for prototyping) and other circuits. The boards feature serial communications interfaces, including [[Universal Serial Bus]] (USB) on some models, which are also used for loading programs. The microcontrollers can be programmed using the [[C (programming language)|C]] and [[C++]] [[programming language]]s (Embedded C), using a standard API which is also known as the '''Arduino Programming Language''', inspired by the [[Processing (programming language)|Processing language]] and used with a modified version of the Processing IDE. In addition to using traditional [[compiler]] [[toolchains]], the Arduino project provides an [[integrated development environment]] (IDE) and a command line tool developed in [[Go (programming language)|Go]].
The Arduino project began in 2005 as a tool for students at the [[Interaction Design Institute Ivrea]], Italy,<ref name="kushner">{{Cite journal |last=Kushner |first=David |date=2011-10-26 |title=The Making of Arduino |url=https://spectrum.ieee.org/the-making-of-arduino |journal=[[IEEE Spectrum]]}}</ref> aiming to provide a low-cost and easy way for novices and professionals to create devices that interact with their environment using [[sensor]]s and [[actuator]]s. Common examples of such devices intended for beginner hobbyists include simple [[robot]]s, [[thermostat]]s, and [[motion detector]]s.
The name ''Arduino'' comes from a café in [[Ivrea]], Italy, where some of the project's founders used to meet. The bar was named after [[Arduin of Ivrea]], who was the [[margrave]] of the [[March of Ivrea]] and [[King of Italy]] from 1002 to 1014.<ref>{{Cite journal |last=Lahart |first=Justin |date=27 November 2009 |title=Taking an Open-Source Approach to Hardware |url=https://www.wsj.com/articles/SB10001424052748703499404574559960271468066 |journal=[[The Wall Street Journal]] |access-date=2014-09-07}}</ref>
==History==
===Founding===
[[File:The first Arduino.jpeg|thumb|The first prototype<ref name="kushner" />]]
The Arduino project was started at the [[Interaction Design Institute Ivrea]] (IDII) in [[Ivrea]], Italy.<ref name="kushner" /> At that time, the students used a [[BASIC Stamp]] [[microcontroller]] at a cost of $50. In 2004, [[Hernando Barragán]] created the development platform ''[[Wiring (development platform)|Wiring]]'' as a Master's thesis project at IDII, under the supervision of Massimo Banzi and [[Casey Reas]]. Casey Reas is known for co-creating, with Ben Fry, the [[Processing]] development platform. The project goal was to create simple, low cost tools for creating digital projects by non-engineers. The Wiring platform consisted of a [[printed circuit board]] (PCB) with an [[ATmega]]128 microcontroller, an IDE based on Processing and library functions to easily program the microcontroller.<ref name=":0">{{Cite web |last=Barragán |first=Hernando |date=2016-01-01 |title=The Untold History of Arduino |url=https://arduinohistory.github.io |access-date=2016-03-06 |website=arduinohistory.github.io}}</ref>
In 2005, Massimo Banzi, with David Mellis, another IDII student, and David Cuartielles, extended Wiring by adding support for the cheaper ATmega8 microcontroller. The new project, forked from Wiring, was called ''Arduino''.<ref name=":0" />
The initial Arduino core team consisted of Massimo Banzi, David Cuartielles, Tom Igoe, Gianluca Martino, and David Mellis.<ref name="kushner" />
Following the completion of the platform, lighter and less expensive versions were distributed in the open-source community. It was estimated in mid-2011 that over 300,000 official Arduinos had been commercially produced,<ref>{{Cite web |date=May 15, 2011 |title=How many Arduinos are "in the wild?" About 300,000 |url=http://www.adafruit.com/blog/2011/05/15/how-many-arduinos-are-in-the-wild-about-300000/ |access-date=2013-05-26 |publisher=[[Adafruit Industries]]}}</ref> and in 2013 that 700,000 official boards were in users' hands.<ref>{{Cite web |date=April 5, 2013 |title=Arduino FAQ – With David Cuartielles |url=http://medea.mah.se/2013/04/arduino-faq// |url-status=dead |archive-url=https://web.archive.org/web/20170906182556/http://medea.mah.se/2013/04/arduino-faq/ |archive-date=2017-09-06 |access-date=2014-03-24 |publisher=[[Malmö University]]}}</ref>
===Trademark dispute===
In early 2008, the five co-founders of the Arduino project created a company, Arduino LLC,<ref>{{Cite web |title=Business Entity Summary for Arduino LLC |url=http://corp.sec.state.ma.us/CorpWeb/CorpSearch/CorpSummary.aspx?FEIN=262323943&SEARCH_TYPE=1 |website=Mass.gov |publisher=State of Massachusetts}}</ref> to hold the trademarks associated with Arduino. The manufacture and sale of the boards were to be done by external companies, and Arduino LLC would get a royalty from them. The founding bylaws of Arduino LLC specified that each of the five founders transfer ownership of the Arduino brand to the newly formed company.{{Citation needed|date=September 2015}}
At the end of 2008, Gianluca Martino's company, Smart Projects, registered the Arduino trademark in Italy and kept this a secret from the other co-founders for about two years. This was revealed when the Arduino company tried to register the trademark in other areas of the world (they originally registered only in the US), and discovered that it was already registered in Italy. Negotiations with Martino and his firm to bring the trademark under the control of the original Arduino company failed. In 2014, Smart Projects began refusing to pay royalties. They then appointed a new CEO, Federico Musto, who renamed the company ''Arduino SRL'' and created the website ''arduino.org'', copying the graphics and layout of the original ''arduino.cc''. This resulted in a rift in the Arduino development team.<ref>{{Cite web |last=Allan |first=Alasdair |date=6 March 2015 |title=Arduino Wars: Group Splits, Competing Products Revealed? |url=http://makezine.com/2015/03/06/arduino-vs-arduino/ |access-date=21 April 2015 |website=makezine.com |publisher=Maker Media, Inc.}}</ref><ref>{{Cite web |last=Banzi |first=Massimo |date=19 March 2015 |title=Massimo Banzi: Fighting for Arduino |url=http://makezine.com/2015/03/19/massimo-banzi-fighting-for-arduino/ |access-date=21 April 2015 |website=makezine.com |publisher=Maker Media, Inc.}}</ref><ref>{{Cite web |last=Williams |first=Elliot |date=28 March 2015 |title=Arduino SRL to Distributors: "We're the Real Arduino" |url=http://hackaday.com/2015/03/28/arduino-srl-to-distributors-were-the-real-arduino/ |access-date=21 April 2015 |website=Hackaday.com }}</ref>
In January 2015, Arduino LLC filed a lawsuit against Arduino SRL.<ref>{{Cite web |title=Arduino LLC vs Arduino SRL lawsuit; United States Courts Archive. |url=https://www.unitedstatescourts.org/federal/mad/167131/ |url-status=dead |archive-url=https://web.archive.org/web/20170709234951/https://www.unitedstatescourts.org/federal/mad/167131/ |archive-date=2017-07-09 |access-date=20 February 2018}}</ref>
In May 2015, Arduino LLC created the worldwide trademark '''Genuino''', used as brand name outside the United States.<ref>{{Cite web |date=16 May 2015 |title=Arduino Announces New Brand, Genuino, Manufacturing Partnership with Adafruit |url=http://makezine.com/2015/05/16/arduino-adafruit-manufacturing-genuino/ |access-date=17 May 2015 |website=Make}}</ref>
At the World [[Maker Faire]] in New York on 1 October 2016, Arduino LLC co-founder and CEO Massimo Banzi and Arduino SRL CEO Federico Musto announced the merger of the two companies, forming Arduino AG.<ref>{{Cite web |date=October 2016 |title=Arduino Blog – Two Arduinos become one |url=https://blog.arduino.cc/2016/10/01/two-arduinos-become-one-2/ |access-date=2016-10-02 |website=Arduino Blog}}</ref> Around that same time, Massimo Banzi announced that in addition to the company a new Arduino Foundation would be launched as "a new beginning for Arduino", but this decision was withdrawn later.<ref>{{Cite news |date=2017-06-09 |title=Free Arduino {{!}} Make |language=en-US |work=Make: DIY Projects and Ideas for Makers |url=https://makezine.com/2017/06/09/free-arduino/ |access-date=2017-12-22}}</ref><ref>{{Cite news |date=2017-06-19 |title=The Arduino Foundation: What's Up? |language=en-US |work=Hackaday |url=https://hackaday.com/2017/06/19/the-arduino-foundation-whats-up/ |access-date=2017-12-22}}</ref><ref>{{Cite web |date=2024-04-10 |title=A New Era for Arduino: Original Arduino Founders Finally Get 100% Control |url=https://audioxpress.com/news/a-new-era-for-arduino-original-arduino-founders-finally-get-100-control |access-date=2024-05-10 |website=audioXpress |language=en}}</ref>
In April 2017, [[Wired (magazine)|Wired]] reported that Musto had "fabricated his academic record... On his company's website, personal LinkedIn accounts, and even on Italian business documents, Musto was, until recently, listed as holding a Ph.D. from the Massachusetts Institute of Technology. In some cases, his biography also claimed an MBA from New York University." Wired reported that neither university had any record of Musto's attendance, and Musto later admitted in an interview with Wired that he had never earned those degrees.<ref>{{Cite magazine |title=Arduino's New CEO, Federico Musto, May Have Fabricated His Academic Record |url=https://www.wired.com/2017/04/arduinos-new-ceo-federico-musto-may-fabricated-academic-record/ |magazine=WIRED |language=en-US |access-date=2017-12-22}}</ref> The controversy surrounding Musto continued when, in July 2017, he reportedly pulled many [[open source]] licenses, schematics, and code from the Arduino website, prompting scrutiny and outcry.<ref>{{Cite news |last=Biggs |first=John |title=CEO controversy mars Arduino's open future |language=en |work=TechCrunch |url=https://techcrunch.com/2017/07/26/ceo-controversy-mars-arduinos-open-future/ |access-date=2017-12-22}}</ref>
By 2017 Arduino AG owned many Arduino trademarks. In July 2017 BCMI, founded by Massimo Banzi, David Cuartielles, David Mellis and Tom Igoe, acquired Arduino AG and all the Arduino trademarks. Fabio Violante is the new CEO replacing Federico Musto, who no longer works for Arduino AG.<ref>{{Cite web |date=28 July 2017 |title=Arduino Blog – A new era for Arduino begins today |url=https://blog.arduino.cc/2017/07/28/a-new-era-for-arduino-begins-today/ |access-date=19 Jan 2018 |website=Arduino Blog}}</ref><ref>{{Cite web |last=Davis |first=Tom |date=31 July 2017 |title=BCMI Acquires Arduino AG and Makers Breathe a Sigh of Relief |url=https://techwombat.com/bcmi-acquires-arduino-ag-makers-breathe-sigh-relief/ |access-date=29 November 2018 |website=techwombat.com}}</ref>
=== Post-dispute ===
In October 2017, Arduino announced its partnership with [[Arm Holdings]] (ARM). The announcement said, in part, "ARM recognized independence as a core value of Arduino ... without any lock-in with the [[ARM architecture]]". Arduino intends to continue to work with all technology vendors and architectures.<ref>{{Cite news |date=2017-10-06 |title=Arduino reborn partners with ARM |language=en-GB |work=Electronics Weekly |url=https://www.electronicsweekly.com/blogs/distribution-world/arduino-reborn-partners-arm-2017-10/ |access-date=2017-11-03}}</ref> Under Violante's guidance, the company started growing again and releasing new designs. The Genuino trademark was dismissed and all products were branded again with the Arduino name.
In August 2018, Arduino announced its new open source command line tool ([https://github.com/arduino/arduino-cli arduino-cli]), which can be used as a replacement of the IDE to program the boards from a shell.<ref>{{Cite web |date=2018-08-24 |title=Announcing the Arduino Command Line Interface (CLI) |url=https://blog.arduino.cc/2018/08/24/announcing-the-arduino-command-line-interface-cli/ |access-date=2020-06-23 |website=Arduino Blog |language=en}}</ref>
In February 2019, Arduino announced its IoT Cloud service as an extension of the Create online environment.<ref>{{Cite web |date=2019-02-06 |title=Announcing the Arduino IoT Cloud Public Beta |url=https://blog.arduino.cc/2019/02/06/announcing-the-arduino-iot-cloud-public-beta/ |access-date=2020-06-23 |website=Arduino Blog |language=en}}</ref>
As of February 2020, the Arduino community included about 30 million active users based on the IDE downloads.<ref>{{Cite web |last=Emilio |first=Maurizio Di Paolo |date=2020-02-04 |title=Open-source HW in the Modern Era: Interview of Arduino's CEO Fabio Violante |url=https://www.eetimes.eu/open-source-hardware-in-the-modern-era-interview-of-arduinos-ceo-fabio-violante/ |access-date=2020-06-23 |website=EE Times Europe |language=en-US}}</ref>
==Hardware==
[[File:Arduino-compatible R3 UNO Sku066313-01.jpg|thumb|Arduino-compatible R3 [[Arduino Uno|Uno]] board with no Arduino logo]]
Arduino is [[open-source hardware]]. The hardware reference designs are distributed under a [[Creative Commons]] Attribution Share-Alike 2.5 license and are available on the Arduino website. Layout and production files for some versions of the hardware are also available.
Although the hardware and software designs are freely available under [[copyleft]] licenses, the developers have requested the name ''Arduino'' to be [[generic trademark|exclusive to the official product]] and not be used for derived works without permission. The official policy document on the use of the Arduino name emphasizes that the project is open to incorporating work by others into the official product.<ref name="AutoF7-44" /> Several Arduino-compatible products commercially released have avoided the project name by using various names ending in ''-duino''.<ref name="freeduino" />
[[File:Arduino316.jpg|thumb|An early Arduino board<ref>{{Cite web |title=Hardware Index |url=https://www.arduino.cc/en/main/boards |access-date=2013-12-10 |publisher=Arduino Project}}</ref> with an [[RS-232]] [[serial communication|serial]] interface (upper left) and an Atmel ATmega8 microcontroller chip (black, lower right); the 14 digital I/O pins are at the top, the 6 analog input pins at the lower right, and the power connector at the lower left.]]
Most Arduino boards consist of an [[Atmel]] 8-bit [[AVR microcontroller]] (ATmega8,<ref>{{Cite news |title=Chip Hall of Fame: Atmel ATmega8 |language=en |work=IEEE Spectrum: Technology, Engineering, and Science News |url=https://spectrum.ieee.org/chip-hall-of-fame-atmel-atmega8 |access-date=2017-10-10}}</ref> ATmega168, [[ATmega328]], ATmega1280, or ATmega2560) with varying amounts of flash memory, pins, and features.<ref>{{Cite web |title=Arduino - Products |url=https://www.arduino.cc/en/Main/Products |access-date=20 February 2018 |website=www.arduino.cc}}</ref> The 32-bit [[Arduino Due]], based on the Atmel [[Atmel ARM-based processors#SAM 3|SAM3X8E]] was introduced in 2012.<ref>{{Cite magazine |title=Microcontroller Maniacs Rejoice: Arduino Finally Releases the 32-Bit Due |url=https://www.wired.com/2012/10/arduino-due/ |magazine=Wired |access-date=20 February 2018}}</ref> The boards use single or double-row pins or female headers that facilitate connections for programming and incorporation into other circuits. These may connect with add-on modules termed ''shields''. Multiple and possibly stacked shields may be individually addressable via an [[I²C]] [[serial bus]]. Most boards include a 5 V [[linear regulator]] and a 16 MHz [[crystal oscillator]] or [[ceramic resonator]]. Some designs, such as the LilyPad,<ref>{{Cite journal |last1=Di Tore |first1=Stefano |last2=Todino |first2=Michele Domenic |last3=Plutino |first3=Antonia |year=2019 |title=Le wearable technologies e la metafora dei sei cappelli per pensare a supporto del seamless learning |journal=Professionalità |volume=4 |issue=II |pages=118–13|issn=0392-2790}}</ref> run at 8 MHz and dispense with the onboard voltage regulator due to specific [[form factor (design)|form factor]] restrictions.
Arduino microcontrollers are pre-programmed with a [[bootloader]] that simplifies the uploading of programs to the on-chip [[flash memory]]. The default bootloader of the Arduino Uno is the Optiboot bootloader.<ref>{{Cite web |title=Optiboot Bootloader for Arduino and Atmel AVR |url=https://github.com/Optiboot/optiboot |access-date=2015-10-01 |website=[[GitHub]]}}</ref> Boards are loaded with program code via a serial connection to another computer. Some serial Arduino boards contain a [[level shifter]] circuit to convert between [[RS-232]] logic levels and [[transistor–transistor logic]] ([[TTL serial]]) level signals. Current Arduino boards are programmed via [[Universal Serial Bus]] (USB), implemented using USB-to-serial adapter chips such as the [[FTDI]] FT232. Some boards, such as later-model Uno boards, substitute the [[FTDI]] chip with a separate AVR chip containing USB-to-serial firmware, which is reprogrammable via its own [[In-system programming|ICSP]] header. Other variants, such as the Arduino Mini and the unofficial Boarduino, use a detachable USB-to-serial adapter board or cable, [[Bluetooth]] or other methods. When used with traditional microcontroller tools, instead of the Arduino IDE, standard AVR [[in-system programming]] (ISP) programming is used.
[[File:UnoConnections.jpg|thumb|An official Arduino Uno R2 with descriptions of the I/O locations]]
The Arduino board exposes most of the microcontroller's I/O pins for use by other circuits. The ''Diecimila'',{{Efn|name="N10000"|''Diecimila'' means "ten thousand" in Italian}} ''Duemilanove'',{{Efn|name="N2009"|''Duemilanove'' means "two thousand and nine" in Italian}} and current ''Uno''{{Efn|name="N1"|''Uno'' means "one" in Italian}} provide 14 digital I/O pins, six of which can produce [[pulse-width modulation|pulse-width modulated]] signals, and six analog inputs, which can also be used as six digital I/O pins. These pins are on the top of the board, via female 0.1-inch (2.54 mm) headers. Several plug-in application shields are also commercially available. The Arduino Nano and Arduino-compatible Bare Bones Board<ref>{{Cite web |title=Bare Bones Board (BBB) Kit |url=http://moderndevice.com/product/bare-bones-board-bbb-kit/ |access-date=29 November 2018 |website=moderndevice.com |archive-date=30 July 2013 |archive-url=https://web.archive.org/web/20130730012610/http://moderndevice.com/product/bare-bones-board-bbb-kit/ |url-status=dead }}</ref> and Boarduino<ref>{{Cite web |title=DC Boarduino (Arduino compatible) Kit (w/ATmega328) - v1.0 |url=https://www.adafruit.com/products/72 |access-date=29 November 2018 |website=adafruit.com}}</ref> boards may provide male header pins on the underside of the board that can plug into solderless [[breadboard]]s.
Many Arduino-compatible and Arduino-derived boards exist. Some are functionally equivalent to an Arduino and can be used interchangeably. Many enhance the basic Arduino by adding output drivers, often for use in school-level education,<ref>{{Cite journal |last1=Di Tore |first1=Stefano |last2=Todino |first2=Michele |last3=Sibilio |first3=Maurizio |date=2019-04-30 |title=Disuffo: Design, prototyping, and development of an open-source educational robot |url=https://oaj.fupress.net/index.php/formare/article/view/3792 |journal=Form@re - Open Journal per la Formazione in Rete |language=it |volume=19 |issue=1 |pages=106–116 |doi=10.13128/FORMARE-24446|s2cid=181368197 }}</ref> to simplify making buggies and small robots. Others are electrically equivalent, but change the form factor, sometimes retaining compatibility with shields, sometimes not. Some variants use different processors, of varying compatibility.
===Official boards===
{{Further|List of Arduino boards and compatible systems}}
The original Arduino hardware was manufactured by the Italian company Smart Projects.<ref name="smartprojects" /> Some Arduino-branded boards have been designed by the American companies [[SparkFun Electronics]] and [[Adafruit Industries]].<ref>{{Cite book |last=Schmidt |first=Maik |url=http://worldcat.org/oclc/1328333803 |title=Arduino : a quick-start guide |isbn=1-68050-523-8 |page=201 |oclc=1328333803}}</ref> {{As of|2016}}, 17 versions of the Arduino hardware have been commercially produced.
<gallery mode="packed">
File:Arduino316.jpg|Arduino RS232<ref>{{Cite web |title=Arduino - ArduinoBoardSerial |url=https://www.arduino.cc/en/Main/ArduinoBoardSerial |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(male pins)
File:Arduino Diecimila 6.jpg|Arduino Diecimila<ref>{{Cite web |title=Arduino - ArduinoBoardDiecimila |url=https://www.arduino.cc/en/Main/ArduinoBoardDiecimila |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:Arduino Duemilanove 2009b.jpg|Arduino Duemilanove<ref>{{Cite web |title=Arduino - ArduinoBoardDuemilanove |url=https://www.arduino.cc/en/Main/ArduinoBoardDuemilanove |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(rev 2009b)
File:Arduino UNO unpacked.jpg|[[Arduino Uno|Arduino Uno R2]]<ref>{{Cite web |title=Arduino Uno Rev3 |url=https://www.arduino.cc/en/Main/ArduinoBoardUno |access-date=20 February 2018 |website=www.arduino.cc}}</ref><ref>{{Cite web |last=Smith |first= W.A. |title=Differences Between the Arduino Uno Revision 2 and Revision 3 |url=https://startingelectronics.org/articles/arduino/uno-r3-r2-differences/ |access-date=20 February 2018 |website=startingelectronics.org}}</ref>
File:Arduino Uno - R3.jpg|[[Arduino Uno|Arduino Uno SMD R3]]<ref>{{Cite web |title=Arduino - ArduinoBoardUnoSMD |url=https://www.arduino.cc/en/Main/ArduinoBoardUnoSMD |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:Arduino Leonardo.jpg|Arduino Leonardo<ref>{{Cite web |title=Arduino Leonardo with Headers |url=https://www.arduino.cc/en/Main/ArduinoBoardLeonardo |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:2x3 pin header on Arduino Micro.jpg|Arduino Micro (ATmega32U4)
File:Arduino Pro Micro.jpg|Arduino Pro Micro (ATmega32U4)
File:Arduino Pro.jpg|Arduino Pro<ref>{{Cite web |title=Arduino Pro |url=https://www.arduino.cc/en/Main/ArduinoBoardPro |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(No USB)
File:Arduino Mega.jpg|Arduino Mega<ref>{{Cite web |title=Arduino Mega official webpage (arduino.cc) |url=https://www.arduino.cc/en/Main/ArduinoBoardMega2560 |access-date=20 February 2018}}</ref>
File:Arduino Nano.jpg|[[Arduino Nano]]<ref>{{Cite web |title=Arduino Nano |url=https://www.arduino.cc/en/Main/ArduinoBoardNano |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(DIP-30 footprint)
File:LilyPad Arduino Main Board.JPG|Arduino LilyPad 00<ref>{{Cite web |title=LilyPad Arduino Main Board |url=https://www.arduino.cc/en/Main/ArduinoBoardLilyPad |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(rev 2007) (No USB)
File:Arduino Robot Top.jpg|Arduino Robot<ref>{{Cite web |title=Arduino Robot |url=https://www.arduino.cc/en/Main/Robot |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:Arduino Esplora.jpg|Arduino Esplora<ref>{{Cite web |title=Arduino Esplora |url=https://www.arduino.cc/en/Main/ArduinoBoardEsplora |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:Arduino Ethernet Board.jpg|Arduino Ethernet<ref>{{Cite web |title=Arduino Ethernet Rev3 without PoE |url=https://www.arduino.cc/en/Main/ArduinoBoardEthernet |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(AVR + W5100)
File:ArduinoYun.jpg|Arduino Yún<ref>{{Cite web |title=Arduino Yún |url=https://www.arduino.cc/en/Main/ArduinoBoardYun |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(AVR + AR9331)
File:ArduinoDue Front.jpg|Arduino Due<ref>{{Cite web |title=Arduino Due |url=https://www.arduino.cc/en/Main/ArduinoBoardDue |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>([[ARM Cortex-M3]] core)
File:Arduino Giga R1 WiFi.png|Arduino GIGA R1 WiFi (Dual core [[ARM Cortex-M7]] + [[ARM Cortex-M4]] cores + Murata 1DX)
</gallery>
===Shields===
Arduino and Arduino-compatible boards use printed circuit expansion boards called ''shields'', which plug into the normally supplied Arduino pin headers.<ref>{{Cite web |title=Arduino - ArduinoShields |url=https://www.arduino.cc/en/Main/ArduinoShields |access-date=2017-10-04 |website=www.arduino.cc |language=en}}</ref> Shields can provide motor controls for [[3D printing]] and other applications, [[GNSS]] (satellite navigation), Ethernet, [[liquid crystal display]] (LCD), or breadboarding ([[prototyping]]). Several shields can also be made [[do it yourself]] (DIY).<ref name="AutoF7-35" /><ref name="AutoF7-36" /><ref>{{Cite web |last=Oxer |first=Jonathan |title=Arduino Shield list |url=http://shieldlist.org/ |access-date=5 Nov 2013}}</ref>
<gallery mode="packed">
File:Multiple shields stacked on an Arduino board.jpg|Some shields offer stacking headers which allow multiple shields to be stacked on top of an Arduino board. Here, a prototyping shield is stacked on two [[Adafruit]] motor shield V2s.
File:Wingshield on Arduino - ARSH-05-WI.jpg|Screw-terminal breakout shield in a wing-type format, allowing bare-end wires to be connected to the board without requiring any specialized pins
File:ARSH-09-DL 03.jpg|Adafruit Datalogging Shield with a [[Secure Digital]] (SD) card slot and real-time clock (RTC) chip along with some space for adding components and modules for customization
File:Adafruit Motor Shield - ARSH-02-MS 01.jpg|Adafruit Motor Shield with screw terminals for connection to motors. Officially discontinued, this shield may still be available through unofficial channels.
File:Front of the motor shield.jpg|The Adafruit Motor Shield V2 uses [[I²C|I{{sup|2}}C]], requiring vastly fewer digital I/O pins than attaching each motor directly.
File:Closeup of usbhost shield with jumper.JPG|A USB host shield which allows an Arduino board to communicate with a USB device such as a keyboard or a mouse
</gallery>
==Software==
A program for Arduino hardware may be written in any [[programming language]] with compilers that produce binary machine code for the target processor. Atmel provides a development environment for their 8-bit [[Atmel AVR|AVR]] and 32-bit [[ARM Cortex-M]] based microcontrollers: AVR Studio (older) and Atmel Studio (newer).<ref name="AutoF7-38" /><ref name="AutoF7-39" /><ref name="AutoF7-46" />
===Legacy IDE===
{{Infobox software
| name = Arduino Legacy IDE
| screenshot = Arduino IDE - Blink.png
| caption = Screenshot of Arduino Legacy IDE showing ''Blink'' program
| developer = Arduino Software
| latest release version = 1.8.19
| latest release date = {{Start date and age|2021|12|21|df=y}}<ref>{{Cite web |title=Releases · arduino/Arduino · GitHub |website=[[GitHub]] |url=https://github.com/arduino/Arduino/releases/ |access-date=12 November 2022}}</ref>
| operating system = [[Microsoft Windows]], [[macOS]], [[Linux]]
| platform = [[IA-32]], [[x86-64]], [[ARM architecture|ARM]]
| genre = [[Integrated development environment]]
| programming language = [[Java (programming language)|Java]], [[C (programming language)|C]], [[C++]]
| license = [[LGPL]] or [[GPL]] license
| website = {{URL|https://www.arduino.cc/en/software}}
}}
The Arduino [[integrated development environment]] (IDE) is a [[cross-platform]] application (for [[Microsoft Windows]], [[macOS]], and [[Linux]]) that is based on ''[[Processing (programming language)|Processing IDE]]'' which is written in [[Java (programming language)|Java]]. It uses the ''[[Wiring (development platform)|Wiring]]'' API as programming style and [[Hardware Abstraction Layer|HAL]]. It includes a code editor with features such as text cutting and pasting, searching and replacing text, automatic indenting, [[brace matching]], and [[syntax highlighting]], and provides simple ''one-click'' mechanisms to compile and upload programs to an Arduino board. It also contains a message area, a text console, a toolbar with buttons for common functions and a hierarchy of operation menus. The source code for the IDE is released under the [[GNU General Public License]], version 2.<ref>{{Cite web |date=August 27, 2020 |title=arduino/Arduino |url=https://github.com/arduino/Arduino |via=GitHub}}</ref>
The Arduino IDE supports the languages [[C (programming language)|C]] and [[C++]] using special rules of code structuring. The Arduino IDE supplies a [[software library]] from the [[Wiring (development platform)|Wiring]] project, which provides many common input and output procedures. User-written code only requires two basic functions, for starting the sketch and the main program loop, that are compiled and linked with a program stub ''main()'' into an executable [[cyclic executive]] program with the [[GNU toolchain]], also included with the IDE distribution. The Arduino IDE employs the program ''avrdude'' to convert the executable code into a text file in [[hexadecimal]] encoding that is loaded into the Arduino board by a loader program in the board's firmware. Traditionally, Arduino IDE was used to program Arduino's official boards based on Atmel AVR Microcontrollers, but over time, once the popularity of Arduino grew and the availability of open-source compilers existed, many more platforms from [[PIC microcontrollers|PIC]], [[STM32]], [[TI MSP430]], [[ESP32]] can be coded using Arduino IDE.<ref>{{Cite web |date=May 8, 2024 |title=Unofficial list of 3rd party boards support urls |website=[[GitHub]] |url=https://github.com/arduino/Arduino/wiki/Unofficial-list-of-3rd-party-boards-support-urls/}}</ref>
===IDE 2.0===
{{Infobox software
| name = Arduino IDE
| developer = Arduino Software
| latest release version = 2.3.2
| latest release date = {{Start date and age|2024|02|20|df=y}}<ref>{{Cite web |title=Releases · arduino/arduino-ide · GitHub |website=[[GitHub]] |url=https://github.com/arduino/arduino-ide/releases/tag/2.3.2 |access-date=20 February 2024}}</ref>
| operating system = [[Microsoft Windows]], [[macOS]], [[Linux]]
| platform = [[x86-64]]
| genre = [[Integrated development environment]]
| programming language = [[TypeScript]], [[JavaScript]], [[Go (programming language)|Go]]
| license = [[GNU Affero General Public License]] v3.0
| website = {{URL|https://www.arduino.cc/en/software}}
}}
An initial alpha preview of a new Arduino IDE was released on October 18, 2019, as the Arduino Pro IDE. The beta preview was released on March 1, 2021, renamed IDE 2.0. On September 14, 2022, the Arduino IDE 2.0 was officially released as stable.<ref>{{Cite web |date=14 September 2022 |title=It's here: please welcome Arduino IDE 2.0 |url=https://blog.arduino.cc/2022/09/14/its-here-please-welcome-arduino-ide-2-0/ |access-date=12 November 2022}}</ref>
The system still uses Arduino CLI (Command Line Interface), but improvements include a more professional development environment and autocompletion support.<ref>{{Cite web |last=Williams |first=Al |date=21 October 2019 |title=The Arduino IDE Finally Grows Up |url=https://hackaday.com/2019/10/21/the-arduino-ide-finally-grows-up/ |access-date=26 October 2019 |website=Hackaday}}</ref> The application frontend is based on the [[Eclipse Theia]] Open Source IDE. Its main new features are:<ref>{{Cite web |last4=Faris |first4=Salmon |date=21 October 2019 |title=Introducing new Arduino Pro IDE with advanced features |url=https://www.seeedstudio.com/blog/2019/10/21/introducing-new-arduino-pro-ide-with-advanced-features/ |access-date=26 October 2019 |website=Seed Studio}}</ref>
* Modern, fully featured development environment
* New Board Manager
* New Library Manager
* Project Explorer
* Basic Auto-Completion and syntax check
* Serial Monitor with Graph Plotter
* Dark Mode and DPI awareness
* 64-bit release
* Debugging capability
One important feature Arduino IDE 2.0 provides is the debugging feature.<ref>{{Cite web |date=12 September 2024|title=Debugging Fundamentals|url=https://docs.arduino.cc/learn/microcontrollers/debugging/ |access-date=26 September 2024 |website=Arduino}}</ref> It allows users to single-step, insert breakpoints or view memory. Debugging requires a target chip with [[debug port]] and a debug probe. The official Arduino Zero board can be debugged out of the box. Other official Arduino SAMD21 boards require a separate SEGGER J-Link or Atmel-ICE.
For a 3rd party board, debugging in Arduino IDE 2.0 is also possible as long as such board supports GDB, OPENOCD and has a debug probe. Community has contributed debugging for ATMega328P based Arduino <ref>{{Cite web | date=9 September 2023 |title=Arduino Board Package to Debug Uno/ATmega328P with CH552 debugger in Arduino IDE 2.0.0 |url=https://github.com/DeqingSun/unoDebugTestPackage |access-date=26 September 2024 |website=Github}}</ref> or CH32 RiscV Boards,<ref>{{Cite web | date=28 February 2023 |title=add debug feature.|url=https://github.com/openwch/arduino_core_ch32/commit/959844e9eba655169430bf6686b2ba055823d1cd |access-date=26 September 2024 |website=Github}}</ref> etc.
===Sketch===
A ''sketch'' is a program written with the Arduino IDE.<ref>{{Cite book |title=Programming Arduino Getting Started with Sketches |date=Nov 8, 2011 |publisher=[[McGraw-Hill]] |isbn=978-0071784221}}</ref> Sketches are saved on the development computer as text files with the file extension '''.ino'''. Arduino Software (IDE) pre-1.0 saved sketches with the extension '''.pde'''.
A minimal Arduino C/C++ program consists of only two functions:<ref>{{Cite web |title=Arduino - BareMinimum |url=https://www.arduino.cc/en/Tutorial/BareMinimum |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
* {{code|setup()}}: This function is called once when a sketch starts after power-up or reset. It is used to initialize variables, input and output pin modes, and other libraries needed in the sketch. It is analogous to the function {{code|main()}}.<ref>{{Cite web |title=setup() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/structure/sketch/setup/ |website=www.arduino.cc}}</ref>
* {{code|loop()}}: After {{code|setup()}} function exits (ends), the {{code|loop()}} function is executed repeatedly in the main program. It controls the board until the board is powered off or is reset. It is analogous to the function {{code|while(1)}}.<ref>{{Cite web |title=loop() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/structure/sketch/loop/ |website=www.arduino.cc}}</ref>
;Blink example
[[File:Power and Pin13 LED on Arduino Compatible Board.jpg|alt=Power LED and Integrated LED on Arduino Compatible Board|thumb|Power LED (red) and User LED (green) attached to pin 13 on an Arduino-compatible board]]
Most Arduino boards contain a [[light-emitting diode]] (LED) and a current-limiting resistor connected between pin 13 and ground, which is a convenient feature for many tests and program functions.<ref name="Blink Tutorial" /> A typical program used by beginners, akin to [[Hello, World!]], is "blink", which repeatedly blinks the on-board LED integrated into the Arduino board. This program uses the functions {{code|pinMode()}}, {{code|digitalWrite()}}, and {{code|delay()}}, which are provided by the internal libraries included in the IDE environment.<ref>{{Cite web |title=pinMode() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/functions/digital-io/pinmode/ |website=www.arduino.cc}}</ref><ref>{{Cite web |title=digitalWrite() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/functions/digital-io/digitalwrite/ |website=www.arduino.cc}}</ref><ref>{{Cite web |title=delay() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/functions/time/delay/ |website=www.arduino.cc}}</ref> This program is usually loaded into a new Arduino board by the manufacturer.
<syntaxhighlight lang="arduino" style="font-size:10pt;">
const int LED_PIN = 13; // Pin number attached to LED.
void setup() {
pinMode(LED_PIN, OUTPUT); // Configure pin 13 to be a digital output.
}
void loop() {
digitalWrite(LED_PIN, HIGH); // Turn on the LED.
delay(1000); // Wait 1 second (1000 milliseconds).
digitalWrite(LED_PIN, LOW); // Turn off the LED.
delay(1000); // Wait 1 second.
}
</syntaxhighlight>
===Libraries===
The open-source nature of the Arduino project has facilitated the publication of many free software libraries that other developers use to augment their projects.
===Operating systems/threading===
There is a [[Xinu]] OS port for the ATmega328P (Arduino Uno and others with the same chip), which includes most of the basic features.<ref>{{Cite web |title=xinu-avr: The Xinu OS for AVR ATmega328P |url=http://se.fi.uncoma.edu.ar/xinu-avr/ |website=se.fi.uncoma.edu.ar}}</ref> The source code of this version is freely available.<ref>{{Cite web |date=October 9, 2022 |title=xinu-arduino |url=https://github.com/real-xinu/xinu-arduino |via=GitHub}}</ref>
There is also a threading tool, named Protothreads. Protothreads are described as "extremely lightweight stackless threads designed for severely memory constrained systems, such as small embedded systems or wireless sensor network nodes.<ref>{{Cite conference |last1=Dunkels |first1=A. |last2=Schmidt |first2=O. |last3=Voigt |first3=T. |year=2005 |title=Using Protothreads for Sensor Node Programming |url=http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-4058 |work=Proceedings of the REALWSN 2005 Workshop on Real-World Wireless Sensor Networks Presented at the REALWSN 2005 Workshop on Real-World Wireless Sensor Networks}}</ref>
There is a port of FreeRTOS for the Arduino.<ref>{{Cite web |title=FreeRTOS for Arduino |url=https://www.arduino.cc/reference/en/libraries/freertos/ |website=www.arduino.cc}}</ref> This is available from the Arduino Library Manager. It is compatible with a number of boards, including the Uno.
==Applications==
* [[Arduboy]], a [[handheld game console]] based on Arduino
* [[Arduinome]], a [[MIDI controller]] device that mimics the [[Monome]]
* [[Ardupilot]], drone software and hardware
* [[ArduSat]], a cubesat based on Arduino
* [[C-STEM Studio]], a platform for hands-on integrated learning of computing, science, technology, engineering, and mathematics (C-STEM) with robotics
* Data loggers for scientific research<ref>{{Cite journal |last1=Beddows |first1=Patricia A. |last2=Mallon |first2=Edward K. |date=2018-02-09 |title=Cave Pearl Data Logger: A Flexible Arduino-Based Logging Platform for Long-Term Monitoring in Harsh Environments |journal=Sensors |language=en |volume=18 |issue=2 |pages=530 |bibcode=2018Senso..18..530B |doi=10.3390/s18020530 |pmc=5856100 |pmid=29425185 |doi-access=free}}</ref><ref>{{Cite journal |last1=Ali |first1=Akram Syed |last2=Zanzinger |first2=Zachary |last3=Debose |first3=Deion |last4=Stephens |first4=Brent |date=2016-05-01 |title=Open Source Building Science Sensors (OSBSS): A low-cost Arduino-based platform for long-term indoor environmental data collection |journal=Building and Environment |language=en |volume=100 |pages=114–126 |doi=10.1016/j.buildenv.2016.02.010 |issn=0360-1323 |doi-access=free|bibcode=2016BuEnv.100..114A }}</ref><ref>{{Cite journal |last1=Bardaji |first1=Raul |last2=Sánchez |first2=Albert-Miquel |last3=Simon |first3=Carine |last4=Wernand |first4=Marcel R. |last5=Piera |first5=Jaume |date=2016-03-15 |title=Estimating the Underwater Diffuse Attenuation Coefficient with a Low-Cost Instrument: The KdUINO DIY Buoy |journal=Sensors |language=en |volume=16 |issue=3 |pages=373 |bibcode=2016Senso..16..373B |doi=10.3390/s16030373 |pmc=4813948 |pmid=26999132 |doi-access=free}}</ref><ref>{{Cite journal |last1=Lockridge |first1=Grant |last2=Dzwonkowski |first2=Brian |last3=Nelson |first3=Reid |last4=Powers |first4=Sean |date=2016-04-13 |title=Development of a Low-Cost Arduino-Based Sonde for Coastal Applications |journal=Sensors |language=en |volume=16 |issue=4 |pages=528 |bibcode=2016Senso..16..528L |doi=10.3390/s16040528 |pmc=4851042 |pmid=27089337 |doi-access=free}}</ref>
* [[OBDuino]], a [[trip computer]] that uses the [[on-board diagnostics]] interface found in most modern cars
* [[OpenEVSE]] an open-source electric vehicle charger
* [[XOD (programming language)|XOD]], a visual programming language for Arduino
==Simulation==
* [[Tinkercad]], an analog and digital simulator supporting Arduino Simulation, which is commonly used to create 3D models
==Recognitions==
The Arduino project received an honorary mention in the Digital Communities category at the 2006 [[Prix Ars Electronica]].<ref name="AutoF7-45" />
The Arduino Engineering Kit won the Bett Award for "Higher Education or Further Education Digital Services" in 2020.<ref>{{Cite web |date=2020-01-20 |title=Arduino Education nominated for Bett Award |url=https://blog.arduino.cc/2020/01/20/arduino-education-nominated-in-bett-awards-2020/ |access-date=2020-07-01 |website=Arduino Blog |language=en}}</ref>
==See also==
{{Portal|Free and open-source software|Electronics}}
* [[List of Arduino boards and compatible systems]]
* [[List of open-source hardware projects]]
== Explanatory notes ==
{{Notelist}}
==References==
{{Reflist|refs=
<ref name="smartprojects">{{Cite web |title=Redirect... |url=http://smartprj.com/ |url-status=dead |archive-url=https://web.archive.org/web/20160305001726/http://www.smartprj.com/ |archive-date=2016-03-05 |access-date=2011-05-03 |website=smartprj.com}}</ref>
<ref name="AutoF7-35">{{Cite web |title=Arduino breadboard shield: $10 & 10 mins |url=http://todbot.com/blog/2006/07/11/arduino-breadboard-shield/ |website=todbot blog|date=11 July 2006 }}</ref>
<ref name="AutoF7-36">{{Cite web |title=Arduino Shields for Prototyping |url=http://www.tigoe.net/pcomp/code/arduinowiring/26 |website=tigoe.net |access-date=2011-09-16 |archive-date=2017-07-02 |archive-url=https://web.archive.org/web/20170702144039/http://www.tigoe.net/pcomp/code/arduinowiring/26/ |url-status=dead }}</ref>
<ref name="Blink Tutorial">{{Cite web |title=Blink Tutorial |url=https://www.arduino.cc/en/Tutorial/Blink |website=Arduino.cc}}</ref>
<ref name="AutoF7-38">{{Cite web |title=Using Atmel Studio for Arduino development |url=http://www.megunolink.com/Building_an_Arduino_project_with_MegunoLink_and_Atmel_Studio_(Blink_Tutorial) |url-status=dead |archive-url=https://archive.today/20130128115914/http://www.megunolink.com/Building_an_Arduino_project_with_MegunoLink_and_Atmel_Studio_(Blink_Tutorial) |archive-date=2013-01-28 |access-date=2013-01-18 |publisher=Megunolink.com}}</ref>
<ref name="AutoF7-39">{{Cite web |title=Using AVR Studio for Arduino development |url=http://www.engblaze.com/tutorial-using-avr-studio-5-with-arduino-projects/ |access-date=2013-01-18 |publisher=Engblaze.com |archive-date=2012-08-28 |archive-url=https://web.archive.org/web/20120828135304/http://www.engblaze.com/tutorial-using-avr-studio-5-with-arduino-projects/ |url-status=dead }}</ref>
<ref name="AutoF7-44">{{Cite web |title=Policy |url=https://www.arduino.cc/en/Main/Policy |access-date=2013-01-18 |publisher=Arduino.cc}}</ref>
<ref name="freeduino">{{Cite web |title=Freeduino Open Designs |url=http://www.freeduino.org/freeduino_open_designs.html |url-status=dead |archive-url=https://web.archive.org/web/20080410220309/http://www.freeduino.org/freeduino_open_designs.html |archive-date=2008-04-10 |access-date=2008-03-03 |publisher=Freeduino.org}}</ref>
<ref name="AutoF7-45">{{Cite web |title=Ars Electronica Archiv |url=http://archive.aec.at/prix/#8052 |url-status=dead |archive-url=https://web.archive.org/web/20190630155735/http://archive.aec.at/prix/#8052 |archive-date=2019-06-30 |access-date=2015-03-27}}</ref>
<ref name="AutoF7-46">{{Cite web |title=Ch Arduino |url=http://c-stem.ucdavis.edu/studio/charduino/ |access-date=2016-10-07}}</ref>
}}
==Further reading==
* {{Cite book |first1=Massimo |last1=Banzi |first2=Michael |last2=Shiloh |title=Make: Getting Started With Arduino: The Open Source Electronics Prototyping Platform |edition=4th |publisher=Make Community |year=2022 |isbn=978-1680456936}}
* {{Cite book |first=Jeremy |last=Blum |title=Exploring Arduino: Tools and Techniques for Engineering Wizardry |edition=2nd |publisher=[[Wiley (publisher)|Wiley]] |year=2019 |isbn=978-1119405375}}
* {{Cite book |first=John |last=Boxall |title=Arduino Workshop: A Hands-On Introduction with 65 Projects |edition=2nd |publisher=[[No Starch Press]] |year=2021 |isbn=978-1718500587}}
* {{Cite book |first1=Tero |last1=Karvinen |first2=Kimmo |last2=Karvinen |first3=Ville |last3=Valtokari |title=Make: Sensors |edition=1st |publisher=Make Community |year=2014 |isbn=978-1449368104}}
* {{Cite book |first=Simon |last=Monk |title=Programming Arduino Next Steps: Going Further with Sketches |edition=2nd |publisher=[[McGraw-Hill Education]] |year=2018 |isbn=978-1260143249}}
* {{Cite book |first=Simon |last=Monk |title=Programming Arduino: Getting Started with Sketches |edition=3rd |publisher=McGraw-Hill Education |year=2022 |isbn=978-1264676989}}
* {{Cite book |first=John |last=Nussey |title=Arduino For Dummies |edition=2nd |publisher=John Wiley & Sons |year=2018 |isbn=978-1119489542}}
* {{Cite book |first=Jack |last=Purdum |title=Beginning C for Arduino: Learn C Programming for the Arduino |edition=2nd |publisher=[[Apress]] |year=2015 |isbn=978-1484209417}}
* {{Cite book |first=Maik |last=Schmidt |title=Arduino: A Quick Start Guide |edition=2nd |publisher=[[Pragmatic Bookshelf]] |year=2015 |isbn=978-1941222249}}
==External links==
{{Commons category|Arduino}}
* {{Official website|https://www.arduino.cc}}
* [https://www.ted.com/talks/massimo_banzi_how_arduino_is_open_sourcing_imagination How Arduino is open sourcing imagination], a [[TED (conference)|TED]] talk by creator Massimo Banzi
* [http://i.imgur.com/yGRLPvL.jpg Evolution tree for Arduino]
* [http://robodino.org/resources/arduino Arduino Cheat Sheet]
* [https://www.flickr.com/photos/johngineer/5484250200/sizes/o/in/photostream/ Arduino Dimensions and Hole Patterns]
* [https://github.com/LNSD/Arduino-Shield-Template Arduino Shield Template]
* Arduino Board Pinout Diagrams: [https://forum.arduino.cc/index.php?topic=132130.0 Due], [https://www.flickr.com/photos/28521811@N04/8469564216/sizes/l/in/photostream/ Esplora], [https://www.flickr.com/photos/28521811@N04/8466547410/sizes/l/in/photostream/ Leonardo], [https://www.flickr.com/photos/28521811@N04/8451024820/sizes/l/in/photostream/ Mega], [https://www.flickr.com/photos/28521811@N04/8471357492/sizes/l/in/photostream/ Micro], [https://www.flickr.com/photos/28521811@N04/8453583648/sizes/l/in/photostream/ Mini], [https://www.flickr.com/photos/28521811@N04/27704970094/sizes/l/in/photostream/ Pro Micro], [https://www.flickr.com/photos/28521811@N04/8572012276/sizes/l/in/photostream/ Pro Mini], [https://www.flickr.com/photos/28521811@N04/8449936925/sizes/l/in/photostream/ Uno], [https://www.flickr.com/photos/28521811@N04/10339503016/sizes/l/in/photostream/ Yun]
; Historical
* Arduino – The Documentary (2010): [https://www.imdb.com/title/tt1869268/ IMDb], [http://vimeo.com/18539129 Vimeo]
* Massimo Banzi interviews: [https://twit.tv/shows/triangulation/episodes/110 Triangulation 110], [https://twit.tv/shows/floss-weekly/episodes/61 FLOSS 61]
* [https://arduinohistory.github.io/ Untold History of Arduino] – Hernando Barragán
* [https://web.archive.org/web/20170709234951/https://www.unitedstatescourts.org/federal/mad/167131/ Lawsuit documents from Arduino LLC vs. Arduino S.R.L. et al.] – United States Courts Archive
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{{Redirect|LilyPad||Lily pad (disambiguation)}}Arduino is a little thing with a microcontroller :){{Other uses|Arduino (disambiguation)}}
{{Infobox information appliance
| name = Arduino
| logo = [[File:Arduino_Logo_Registered.svg|50px]] [[File:Genuino-Logo.svg|50px]]
| image = [[File:Arduino Uno - R3.jpg|220px]]
| caption = [[Arduino Uno]] SMD R3
| manufacturer = Arduino
| type = [[Single-board microcontroller]]
| cpu = {{Plain list|
* [[Atmel AVR]] (8-bit)
* [[ARM Cortex-M0+]] (32-bit)
* [[ARM Cortex-M3]] (32-bit)
* [[Intel Quark]] ([[x86]]) (32-bit)
}}
| storage = [[Flash memory|Flash]], [[EEPROM]]
| memory = [[Static random-access memory|SRAM]]
| os = None (default) <br> [[Xinu]]
| website = {{URL|https://www.arduino.cc/|arduino.cc}}
}}
<gallery mode="packed">
File:Arduino316.jpg|Arduino RS232<ref>{{Cite web |title=Arduino - ArduinoBoardSerial |url=https://www.arduino.cc/en/Main/ArduinoBoardSerial |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(male pins)
File:Arduino Diecimila 6.jpg|Arduino Diecimila<ref>{{Cite web |title=Arduino - ArduinoBoardDiecimila |url=https://www.arduino.cc/en/Main/ArduinoBoardDiecimila |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:Arduino Duemilanove 2009b.jpg|Arduino Duemilanove<ref>{{Cite web |title=Arduino - ArduinoBoardDuemilanove |url=https://www.arduino.cc/en/Main/ArduinoBoardDuemilanove |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(rev 2009b)
File:Arduino UNO unpacked.jpg|[[Arduino Uno|Arduino Uno R2]]<ref>{{Cite web |title=Arduino Uno Rev3 |url=https://www.arduino.cc/en/Main/ArduinoBoardUno |access-date=20 February 2018 |website=www.arduino.cc}}</ref><ref>{{Cite web |last=Smith |first= W.A. |title=Differences Between the Arduino Uno Revision 2 and Revision 3 |url=https://startingelectronics.org/articles/arduino/uno-r3-r2-differences/ |access-date=20 February 2018 |website=startingelectronics.org}}</ref>
File:Arduino Uno - R3.jpg|[[Arduino Uno|Arduino Uno SMD R3]]<ref>{{Cite web |title=Arduino - ArduinoBoardUnoSMD |url=https://www.arduino.cc/en/Main/ArduinoBoardUnoSMD |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:Arduino Leonardo.jpg|Arduino Leonardo<ref>{{Cite web |title=Arduino Leonardo with Headers |url=https://www.arduino.cc/en/Main/ArduinoBoardLeonardo |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:2x3 pin header on Arduino Micro.jpg|Arduino Micro (ATmega32U4)
File:Arduino Pro Micro.jpg|Arduino Pro Micro (ATmega32U4)
File:Arduino Pro.jpg|Arduino Pro<ref>{{Cite web |title=Arduino Pro |url=https://www.arduino.cc/en/Main/ArduinoBoardPro |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(No USB)
File:Arduino Mega.jpg|Arduino Mega<ref>{{Cite web |title=Arduino Mega official webpage (arduino.cc) |url=https://www.arduino.cc/en/Main/ArduinoBoardMega2560 |access-date=20 February 2018}}</ref>
File:Arduino Nano.jpg|[[Arduino Nano]]<ref>{{Cite web |title=Arduino Nano |url=https://www.arduino.cc/en/Main/ArduinoBoardNano |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(DIP-30 footprint)
File:LilyPad Arduino Main Board.JPG|Arduino LilyPad 00<ref>{{Cite web |title=LilyPad Arduino Main Board |url=https://www.arduino.cc/en/Main/ArduinoBoardLilyPad |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(rev 2007) (No USB)
File:Arduino Robot Top.jpg|Arduino Robot<ref>{{Cite web |title=Arduino Robot |url=https://www.arduino.cc/en/Main/Robot |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:Arduino Esplora.jpg|Arduino Esplora<ref>{{Cite web |title=Arduino Esplora |url=https://www.arduino.cc/en/Main/ArduinoBoardEsplora |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
File:Arduino Ethernet Board.jpg|Arduino Ethernet<ref>{{Cite web |title=Arduino Ethernet Rev3 without PoE |url=https://www.arduino.cc/en/Main/ArduinoBoardEthernet |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(AVR + W5100)
File:ArduinoYun.jpg|Arduino Yún<ref>{{Cite web |title=Arduino Yún |url=https://www.arduino.cc/en/Main/ArduinoBoardYun |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>(AVR + AR9331)
File:ArduinoDue Front.jpg|Arduino Due<ref>{{Cite web |title=Arduino Due |url=https://www.arduino.cc/en/Main/ArduinoBoardDue |access-date=20 February 2018 |website=www.arduino.cc}}</ref><br/>([[ARM Cortex-M3]] core)
File:Arduino Giga R1 WiFi.png|Arduino GIGA R1 WiFi (Dual core [[ARM Cortex-M7]] + [[ARM Cortex-M4]] cores + Murata 1DX)
</gallery>
===Shields===
Arduino and Arduino-compatible boards use printed circuit expansion boards called ''shields'', which plug into the normally supplied Arduino pin headers.<ref>{{Cite web |title=Arduino - ArduinoShields |url=https://www.arduino.cc/en/Main/ArduinoShields |access-date=2017-10-04 |website=www.arduino.cc |language=en}}</ref> Shields can provide motor controls for [[3D printing]] and other applications, [[GNSS]] (satellite navigation), Ethernet, [[liquid crystal display]] (LCD), or breadboarding ([[prototyping]]). Several shields can also be made [[do it yourself]] (DIY).<ref name="AutoF7-35" /><ref name="AutoF7-36" /><ref>{{Cite web |last=Oxer |first=Jonathan |title=Arduino Shield list |url=http://shieldlist.org/ |access-date=5 Nov 2013}}</ref>
<gallery mode="packed">
File:Multiple shields stacked on an Arduino board.jpg|Some shields offer stacking headers which allow multiple shields to be stacked on top of an Arduino board. Here, a prototyping shield is stacked on two [[Adafruit]] motor shield V2s.
File:Wingshield on Arduino - ARSH-05-WI.jpg|Screw-terminal breakout shield in a wing-type format, allowing bare-end wires to be connected to the board without requiring any specialized pins
File:ARSH-09-DL 03.jpg|Adafruit Datalogging Shield with a [[Secure Digital]] (SD) card slot and real-time clock (RTC) chip along with some space for adding components and modules for customization
File:Adafruit Motor Shield - ARSH-02-MS 01.jpg|Adafruit Motor Shield with screw terminals for connection to motors. Officially discontinued, this shield may still be available through unofficial channels.
File:Front of the motor shield.jpg|The Adafruit Motor Shield V2 uses [[I²C|I{{sup|2}}C]], requiring vastly fewer digital I/O pins than attaching each motor directly.
File:Closeup of usbhost shield with jumper.JPG|A USB host shield which allows an Arduino board to communicate with a USB device such as a keyboard or a mouse
</gallery>
==Software==
A program for Arduino hardware may be written in any [[programming language]] with compilers that produce binary machine code for the target processor. Atmel provides a development environment for their 8-bit [[Atmel AVR|AVR]] and 32-bit [[ARM Cortex-M]] based microcontrollers: AVR Studio (older) and Atmel Studio (newer).<ref name="AutoF7-38" /><ref name="AutoF7-39" /><ref name="AutoF7-46" />
===Legacy IDE===
{{Infobox software
| name = Arduino Legacy IDE
| screenshot = Arduino IDE - Blink.png
| caption = Screenshot of Arduino Legacy IDE showing ''Blink'' program
| developer = Arduino Software
| latest release version = 1.8.19
| latest release date = {{Start date and age|2021|12|21|df=y}}<ref>{{Cite web |title=Releases · arduino/Arduino · GitHub |website=[[GitHub]] |url=https://github.com/arduino/Arduino/releases/ |access-date=12 November 2022}}</ref>
| operating system = [[Microsoft Windows]], [[macOS]], [[Linux]]
| platform = [[IA-32]], [[x86-64]], [[ARM architecture|ARM]]
| genre = [[Integrated development environment]]
| programming language = [[Java (programming language)|Java]], [[C (programming language)|C]], [[C++]]
| license = [[LGPL]] or [[GPL]] license
| website = {{URL|https://www.arduino.cc/en/software}}
}}
The Arduino [[integrated development environment]] (IDE) is a [[cross-platform]] application (for [[Microsoft Windows]], [[macOS]], and [[Linux]]) that is based on ''[[Processing (programming language)|Processing IDE]]'' which is written in [[Java (programming language)|Java]]. It uses the ''[[Wiring (development platform)|Wiring]]'' API as programming style and [[Hardware Abstraction Layer|HAL]]. It includes a code editor with features such as text cutting and pasting, searching and replacing text, automatic indenting, [[brace matching]], and [[syntax highlighting]], and provides simple ''one-click'' mechanisms to compile and upload programs to an Arduino board. It also contains a message area, a text console, a toolbar with buttons for common functions and a hierarchy of operation menus. The source code for the IDE is released under the [[GNU General Public License]], version 2.<ref>{{Cite web |date=August 27, 2020 |title=arduino/Arduino |url=https://github.com/arduino/Arduino |via=GitHub}}</ref>
The Arduino IDE supports the languages [[C (programming language)|C]] and [[C++]] using special rules of code structuring. The Arduino IDE supplies a [[software library]] from the [[Wiring (development platform)|Wiring]] project, which provides many common input and output procedures. User-written code only requires two basic functions, for starting the sketch and the main program loop, that are compiled and linked with a program stub ''main()'' into an executable [[cyclic executive]] program with the [[GNU toolchain]], also included with the IDE distribution. The Arduino IDE employs the program ''avrdude'' to convert the executable code into a text file in [[hexadecimal]] encoding that is loaded into the Arduino board by a loader program in the board's firmware. Traditionally, Arduino IDE was used to program Arduino's official boards based on Atmel AVR Microcontrollers, but over time, once the popularity of Arduino grew and the availability of open-source compilers existed, many more platforms from [[PIC microcontrollers|PIC]], [[STM32]], [[TI MSP430]], [[ESP32]] can be coded using Arduino IDE.<ref>{{Cite web |date=May 8, 2024 |title=Unofficial list of 3rd party boards support urls |website=[[GitHub]] |url=https://github.com/arduino/Arduino/wiki/Unofficial-list-of-3rd-party-boards-support-urls/}}</ref>
===IDE 2.0===
{{Infobox software
| name = Arduino IDE
| developer = Arduino Software
| latest release version = 2.3.2
| latest release date = {{Start date and age|2024|02|20|df=y}}<ref>{{Cite web |title=Releases · arduino/arduino-ide · GitHub |website=[[GitHub]] |url=https://github.com/arduino/arduino-ide/releases/tag/2.3.2 |access-date=20 February 2024}}</ref>
| operating system = [[Microsoft Windows]], [[macOS]], [[Linux]]
| platform = [[x86-64]]
| genre = [[Integrated development environment]]
| programming language = [[TypeScript]], [[JavaScript]], [[Go (programming language)|Go]]
| license = [[GNU Affero General Public License]] v3.0
| website = {{URL|https://www.arduino.cc/en/software}}
}}
An initial alpha preview of a new Arduino IDE was released on October 18, 2019, as the Arduino Pro IDE. The beta preview was released on March 1, 2021, renamed IDE 2.0. On September 14, 2022, the Arduino IDE 2.0 was officially released as stable.<ref>{{Cite web |date=14 September 2022 |title=It's here: please welcome Arduino IDE 2.0 |url=https://blog.arduino.cc/2022/09/14/its-here-please-welcome-arduino-ide-2-0/ |access-date=12 November 2022}}</ref>
The system still uses Arduino CLI (Command Line Interface), but improvements include a more professional development environment and autocompletion support.<ref>{{Cite web |last=Williams |first=Al |date=21 October 2019 |title=The Arduino IDE Finally Grows Up |url=https://hackaday.com/2019/10/21/the-arduino-ide-finally-grows-up/ |access-date=26 October 2019 |website=Hackaday}}</ref> The application frontend is based on the [[Eclipse Theia]] Open Source IDE. Its main new features are:<ref>{{Cite web |last4=Faris |first4=Salmon |date=21 October 2019 |title=Introducing new Arduino Pro IDE with advanced features |url=https://www.seeedstudio.com/blog/2019/10/21/introducing-new-arduino-pro-ide-with-advanced-features/ |access-date=26 October 2019 |website=Seed Studio}}</ref>
* Modern, fully featured development environment
* New Board Manager
* New Library Manager
* Project Explorer
* Basic Auto-Completion and syntax check
* Serial Monitor with Graph Plotter
* Dark Mode and DPI awareness
* 64-bit release
* Debugging capability
One important feature Arduino IDE 2.0 provides is the debugging feature.<ref>{{Cite web |date=12 September 2024|title=Debugging Fundamentals|url=https://docs.arduino.cc/learn/microcontrollers/debugging/ |access-date=26 September 2024 |website=Arduino}}</ref> It allows users to single-step, insert breakpoints or view memory. Debugging requires a target chip with [[debug port]] and a debug probe. The official Arduino Zero board can be debugged out of the box. Other official Arduino SAMD21 boards require a separate SEGGER J-Link or Atmel-ICE.
For a 3rd party board, debugging in Arduino IDE 2.0 is also possible as long as such board supports GDB, OPENOCD and has a debug probe. Community has contributed debugging for ATMega328P based Arduino <ref>{{Cite web | date=9 September 2023 |title=Arduino Board Package to Debug Uno/ATmega328P with CH552 debugger in Arduino IDE 2.0.0 |url=https://github.com/DeqingSun/unoDebugTestPackage |access-date=26 September 2024 |website=Github}}</ref> or CH32 RiscV Boards,<ref>{{Cite web | date=28 February 2023 |title=add debug feature.|url=https://github.com/openwch/arduino_core_ch32/commit/959844e9eba655169430bf6686b2ba055823d1cd |access-date=26 September 2024 |website=Github}}</ref> etc.
===Sketch===
A ''sketch'' is a program written with the Arduino IDE.<ref>{{Cite book |title=Programming Arduino Getting Started with Sketches |date=Nov 8, 2011 |publisher=[[McGraw-Hill]] |isbn=978-0071784221}}</ref> Sketches are saved on the development computer as text files with the file extension '''.ino'''. Arduino Software (IDE) pre-1.0 saved sketches with the extension '''.pde'''.
A minimal Arduino C/C++ program consists of only two functions:<ref>{{Cite web |title=Arduino - BareMinimum |url=https://www.arduino.cc/en/Tutorial/BareMinimum |access-date=20 February 2018 |website=www.arduino.cc}}</ref>
* {{code|setup()}}: This function is called once when a sketch starts after power-up or reset. It is used to initialize variables, input and output pin modes, and other libraries needed in the sketch. It is analogous to the function {{code|main()}}.<ref>{{Cite web |title=setup() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/structure/sketch/setup/ |website=www.arduino.cc}}</ref>
* {{code|loop()}}: After {{code|setup()}} function exits (ends), the {{code|loop()}} function is executed repeatedly in the main program. It controls the board until the board is powered off or is reset. It is analogous to the function {{code|while(1)}}.<ref>{{Cite web |title=loop() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/structure/sketch/loop/ |website=www.arduino.cc}}</ref>
;Blink example
[[File:Power and Pin13 LED on Arduino Compatible Board.jpg|alt=Power LED and Integrated LED on Arduino Compatible Board|thumb|Power LED (red) and User LED (green) attached to pin 13 on an Arduino-compatible board]]
Most Arduino boards contain a [[light-emitting diode]] (LED) and a current-limiting resistor connected between pin 13 and ground, which is a convenient feature for many tests and program functions.<ref name="Blink Tutorial" /> A typical program used by beginners, akin to [[Hello, World!]], is "blink", which repeatedly blinks the on-board LED integrated into the Arduino board. This program uses the functions {{code|pinMode()}}, {{code|digitalWrite()}}, and {{code|delay()}}, which are provided by the internal libraries included in the IDE environment.<ref>{{Cite web |title=pinMode() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/functions/digital-io/pinmode/ |website=www.arduino.cc}}</ref><ref>{{Cite web |title=digitalWrite() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/functions/digital-io/digitalwrite/ |website=www.arduino.cc}}</ref><ref>{{Cite web |title=delay() - Arduino Reference |url=https://www.arduino.cc/reference/en/language/functions/time/delay/ |website=www.arduino.cc}}</ref> This program is usually loaded into a new Arduino board by the manufacturer.
<syntaxhighlight lang="arduino" style="font-size:10pt;">
const int LED_PIN = 13; // Pin number attached to LED.
void setup() {
pinMode(LED_PIN, OUTPUT); // Configure pin 13 to be a digital output.
}
void loop() {
digitalWrite(LED_PIN, HIGH); // Turn on the LED.
delay(1000); // Wait 1 second (1000 milliseconds).
digitalWrite(LED_PIN, LOW); // Turn off the LED.
delay(1000); // Wait 1 second.
}
</syntaxhighlight>
===Libraries===
The open-source nature of the Arduino project has facilitated the publication of many free software libraries that other developers use to augment their projects.
===Operating systems/threading===
There is a [[Xinu]] OS port for the ATmega328P (Arduino Uno and others with the same chip), which includes most of the basic features.<ref>{{Cite web |title=xinu-avr: The Xinu OS for AVR ATmega328P |url=http://se.fi.uncoma.edu.ar/xinu-avr/ |website=se.fi.uncoma.edu.ar}}</ref> The source code of this version is freely available.<ref>{{Cite web |date=October 9, 2022 |title=xinu-arduino |url=https://github.com/real-xinu/xinu-arduino |via=GitHub}}</ref>
There is also a threading tool, named Protothreads. Protothreads are described as "extremely lightweight stackless threads designed for severely memory constrained systems, such as small embedded systems or wireless sensor network nodes.<ref>{{Cite conference |last1=Dunkels |first1=A. |last2=Schmidt |first2=O. |last3=Voigt |first3=T. |year=2005 |title=Using Protothreads for Sensor Node Programming |url=http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-4058 |work=Proceedings of the REALWSN 2005 Workshop on Real-World Wireless Sensor Networks Presented at the REALWSN 2005 Workshop on Real-World Wireless Sensor Networks}}</ref>
There is a port of FreeRTOS for the Arduino.<ref>{{Cite web |title=FreeRTOS for Arduino |url=https://www.arduino.cc/reference/en/libraries/freertos/ |website=www.arduino.cc}}</ref> This is available from the Arduino Library Manager. It is compatible with a number of boards, including the Uno.
==Applications==
* [[Arduboy]], a [[handheld game console]] based on Arduino
* [[Arduinome]], a [[MIDI controller]] device that mimics the [[Monome]]
* [[Ardupilot]], drone software and hardware
* [[ArduSat]], a cubesat based on Arduino
* [[C-STEM Studio]], a platform for hands-on integrated learning of computing, science, technology, engineering, and mathematics (C-STEM) with robotics
* Data loggers for scientific research<ref>{{Cite journal |last1=Beddows |first1=Patricia A. |last2=Mallon |first2=Edward K. |date=2018-02-09 |title=Cave Pearl Data Logger: A Flexible Arduino-Based Logging Platform for Long-Term Monitoring in Harsh Environments |journal=Sensors |language=en |volume=18 |issue=2 |pages=530 |bibcode=2018Senso..18..530B |doi=10.3390/s18020530 |pmc=5856100 |pmid=29425185 |doi-access=free}}</ref><ref>{{Cite journal |last1=Ali |first1=Akram Syed |last2=Zanzinger |first2=Zachary |last3=Debose |first3=Deion |last4=Stephens |first4=Brent |date=2016-05-01 |title=Open Source Building Science Sensors (OSBSS): A low-cost Arduino-based platform for long-term indoor environmental data collection |journal=Building and Environment |language=en |volume=100 |pages=114–126 |doi=10.1016/j.buildenv.2016.02.010 |issn=0360-1323 |doi-access=free|bibcode=2016BuEnv.100..114A }}</ref><ref>{{Cite journal |last1=Bardaji |first1=Raul |last2=Sánchez |first2=Albert-Miquel |last3=Simon |first3=Carine |last4=Wernand |first4=Marcel R. |last5=Piera |first5=Jaume |date=2016-03-15 |title=Estimating the Underwater Diffuse Attenuation Coefficient with a Low-Cost Instrument: The KdUINO DIY Buoy |journal=Sensors |language=en |volume=16 |issue=3 |pages=373 |bibcode=2016Senso..16..373B |doi=10.3390/s16030373 |pmc=4813948 |pmid=26999132 |doi-access=free}}</ref><ref>{{Cite journal |last1=Lockridge |first1=Grant |last2=Dzwonkowski |first2=Brian |last3=Nelson |first3=Reid |last4=Powers |first4=Sean |date=2016-04-13 |title=Development of a Low-Cost Arduino-Based Sonde for Coastal Applications |journal=Sensors |language=en |volume=16 |issue=4 |pages=528 |bibcode=2016Senso..16..528L |doi=10.3390/s16040528 |pmc=4851042 |pmid=27089337 |doi-access=free}}</ref>
* [[OBDuino]], a [[trip computer]] that uses the [[on-board diagnostics]] interface found in most modern cars
* [[OpenEVSE]] an open-source electric vehicle charger
* [[XOD (programming language)|XOD]], a visual programming language for Arduino
==Simulation==
* [[Tinkercad]], an analog and digital simulator supporting Arduino Simulation, which is commonly used to create 3D models
==Recognitions==
The Arduino project received an honorary mention in the Digital Communities category at the 2006 [[Prix Ars Electronica]].<ref name="AutoF7-45" />
The Arduino Engineering Kit won the Bett Award for "Higher Education or Further Education Digital Services" in 2020.<ref>{{Cite web |date=2020-01-20 |title=Arduino Education nominated for Bett Award |url=https://blog.arduino.cc/2020/01/20/arduino-education-nominated-in-bett-awards-2020/ |access-date=2020-07-01 |website=Arduino Blog |language=en}}</ref>
==See also==
{{Portal|Free and open-source software|Electronics}}
* [[List of Arduino boards and compatible systems]]
* [[List of open-source hardware projects]]
== Explanatory notes ==
{{Notelist}}
==References==
{{Reflist|refs=
<ref name="smartprojects">{{Cite web |title=Redirect... |url=http://smartprj.com/ |url-status=dead |archive-url=https://web.archive.org/web/20160305001726/http://www.smartprj.com/ |archive-date=2016-03-05 |access-date=2011-05-03 |website=smartprj.com}}</ref>
<ref name="AutoF7-35">{{Cite web |title=Arduino breadboard shield: $10 & 10 mins |url=http://todbot.com/blog/2006/07/11/arduino-breadboard-shield/ |website=todbot blog|date=11 July 2006 }}</ref>
<ref name="AutoF7-36">{{Cite web |title=Arduino Shields for Prototyping |url=http://www.tigoe.net/pcomp/code/arduinowiring/26 |website=tigoe.net |access-date=2011-09-16 |archive-date=2017-07-02 |archive-url=https://web.archive.org/web/20170702144039/http://www.tigoe.net/pcomp/code/arduinowiring/26/ |url-status=dead }}</ref>
<ref name="Blink Tutorial">{{Cite web |title=Blink Tutorial |url=https://www.arduino.cc/en/Tutorial/Blink |website=Arduino.cc}}</ref>
<ref name="AutoF7-38">{{Cite web |title=Using Atmel Studio for Arduino development |url=http://www.megunolink.com/Building_an_Arduino_project_with_MegunoLink_and_Atmel_Studio_(Blink_Tutorial) |url-status=dead |archive-url=https://archive.today/20130128115914/http://www.megunolink.com/Building_an_Arduino_project_with_MegunoLink_and_Atmel_Studio_(Blink_Tutorial) |archive-date=2013-01-28 |access-date=2013-01-18 |publisher=Megunolink.com}}</ref>
<ref name="AutoF7-39">{{Cite web |title=Using AVR Studio for Arduino development |url=http://www.engblaze.com/tutorial-using-avr-studio-5-with-arduino-projects/ |access-date=2013-01-18 |publisher=Engblaze.com |archive-date=2012-08-28 |archive-url=https://web.archive.org/web/20120828135304/http://www.engblaze.com/tutorial-using-avr-studio-5-with-arduino-projects/ |url-status=dead }}</ref>
<ref name="AutoF7-44">{{Cite web |title=Policy |url=https://www.arduino.cc/en/Main/Policy |access-date=2013-01-18 |publisher=Arduino.cc}}</ref>
<ref name="freeduino">{{Cite web |title=Freeduino Open Designs |url=http://www.freeduino.org/freeduino_open_designs.html |url-status=dead |archive-url=https://web.archive.org/web/20080410220309/http://www.freeduino.org/freeduino_open_designs.html |archive-date=2008-04-10 |access-date=2008-03-03 |publisher=Freeduino.org}}</ref>
<ref name="AutoF7-45">{{Cite web |title=Ars Electronica Archiv |url=http://archive.aec.at/prix/#8052 |url-status=dead |archive-url=https://web.archive.org/web/20190630155735/http://archive.aec.at/prix/#8052 |archive-date=2019-06-30 |access-date=2015-03-27}}</ref>
<ref name="AutoF7-46">{{Cite web |title=Ch Arduino |url=http://c-stem.ucdavis.edu/studio/charduino/ |access-date=2016-10-07}}</ref>
}}
==Further reading==
* {{Cite book |first1=Massimo |last1=Banzi |first2=Michael |last2=Shiloh |title=Make: Getting Started With Arduino: The Open Source Electronics Prototyping Platform |edition=4th |publisher=Make Community |year=2022 |isbn=978-1680456936}}
* {{Cite book |first=Jeremy |last=Blum |title=Exploring Arduino: Tools and Techniques for Engineering Wizardry |edition=2nd |publisher=[[Wiley (publisher)|Wiley]] |year=2019 |isbn=978-1119405375}}
* {{Cite book |first=John |last=Boxall |title=Arduino Workshop: A Hands-On Introduction with 65 Projects |edition=2nd |publisher=[[No Starch Press]] |year=2021 |isbn=978-1718500587}}
* {{Cite book |first1=Tero |last1=Karvinen |first2=Kimmo |last2=Karvinen |first3=Ville |last3=Valtokari |title=Make: Sensors |edition=1st |publisher=Make Community |year=2014 |isbn=978-1449368104}}
* {{Cite book |first=Simon |last=Monk |title=Programming Arduino Next Steps: Going Further with Sketches |edition=2nd |publisher=[[McGraw-Hill Education]] |year=2018 |isbn=978-1260143249}}
* {{Cite book |first=Simon |last=Monk |title=Programming Arduino: Getting Started with Sketches |edition=3rd |publisher=McGraw-Hill Education |year=2022 |isbn=978-1264676989}}
* {{Cite book |first=John |last=Nussey |title=Arduino For Dummies |edition=2nd |publisher=John Wiley & Sons |year=2018 |isbn=978-1119489542}}
* {{Cite book |first=Jack |last=Purdum |title=Beginning C for Arduino: Learn C Programming for the Arduino |edition=2nd |publisher=[[Apress]] |year=2015 |isbn=978-1484209417}}
* {{Cite book |first=Maik |last=Schmidt |title=Arduino: A Quick Start Guide |edition=2nd |publisher=[[Pragmatic Bookshelf]] |year=2015 |isbn=978-1941222249}}
==External links==
{{Commons category|Arduino}}
* {{Official website|https://www.arduino.cc}}
* [https://www.ted.com/talks/massimo_banzi_how_arduino_is_open_sourcing_imagination How Arduino is open sourcing imagination], a [[TED (conference)|TED]] talk by creator Massimo Banzi
* [http://i.imgur.com/yGRLPvL.jpg Evolution tree for Arduino]
* [http://robodino.org/resources/arduino Arduino Cheat Sheet]
* [https://www.flickr.com/photos/johngineer/5484250200/sizes/o/in/photostream/ Arduino Dimensions and Hole Patterns]
* [https://github.com/LNSD/Arduino-Shield-Template Arduino Shield Template]
* Arduino Board Pinout Diagrams: [https://forum.arduino.cc/index.php?topic=132130.0 Due], [https://www.flickr.com/photos/28521811@N04/8469564216/sizes/l/in/photostream/ Esplora], [https://www.flickr.com/photos/28521811@N04/8466547410/sizes/l/in/photostream/ Leonardo], [https://www.flickr.com/photos/28521811@N04/8451024820/sizes/l/in/photostream/ Mega], [https://www.flickr.com/photos/28521811@N04/8471357492/sizes/l/in/photostream/ Micro], [https://www.flickr.com/photos/28521811@N04/8453583648/sizes/l/in/photostream/ Mini], [https://www.flickr.com/photos/28521811@N04/27704970094/sizes/l/in/photostream/ Pro Micro], [https://www.flickr.com/photos/28521811@N04/8572012276/sizes/l/in/photostream/ Pro Mini], [https://www.flickr.com/photos/28521811@N04/8449936925/sizes/l/in/photostream/ Uno], [https://www.flickr.com/photos/28521811@N04/10339503016/sizes/l/in/photostream/ Yun]
; Historical
* Arduino – The Documentary (2010): [https://www.imdb.com/title/tt1869268/ IMDb], [http://vimeo.com/18539129 Vimeo]
* Massimo Banzi interviews: [https://twit.tv/shows/triangulation/episodes/110 Triangulation 110], [https://twit.tv/shows/floss-weekly/episodes/61 FLOSS 61]
* [https://arduinohistory.github.io/ Untold History of Arduino] – Hernando Barragán
* [https://web.archive.org/web/20170709234951/https://www.unitedstatescourts.org/federal/mad/167131/ Lawsuit documents from Arduino LLC vs. Arduino S.R.L. et al.] – United States Courts Archive
<!-- See [[Talk:Arduino#External links discussion]] before mass deletion of these links -->
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[[Category:Arduino| ]]
[[Category:Microcontrollers]]
[[Category:Open hardware electronic devices]]
[[Category:Robotics hardware]]
[[Category:Computer-related introductions in 2005]]
[[Category:Physical computing]]
[[Category:Italian inventions]]
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{{Short description|Italian open-source hardware and software company}}
-{{Redirect|LilyPad||Lily pad (disambiguation)}}
-{{Other uses|Arduino (disambiguation)}}
+{{Redirect|LilyPad||Lily pad (disambiguation)}}Arduino is a little thing with a microcontroller :){{Other uses|Arduino (disambiguation)}}
{{Infobox information appliance
| name = Arduino
@@ -21,69 +20,4 @@
}}
-'''Arduino''' ({{IPAc-en|ɑː|r|ˈ|d|w|iː|n|oʊ}}) is an Italian [[open-source hardware]] and [[open-source software|software]] company, project, and user community that designs and manufactures [[single-board microcontroller]]s and [[microcontroller]] kits for building digital devices. Its hardware products are licensed under a [[Creative Commons license|CC BY-SA license]], while the software is licensed under the [[GNU Lesser General Public License]] (LGPL) or the [[GNU General Public License]] (GPL),<ref>{{Cite web |title=Getting Started: FOUNDATION > Introduction |url=https://www.arduino.cc/en/guide/introduction |url-status=dead |archive-url=https://web.archive.org/web/20170829015201/https://www.arduino.cc/en/Guide/Introduction |archive-date=2017-08-29 |access-date=2017-05-23 |website=arduino.cc}}</ref> permitting the [[manufacture]] of Arduino boards and software distribution by anyone. Arduino boards are available commercially from the official [[website]] or through authorized distributors.<ref>{{Cite web |title=Arduino - Home |url=https://www.arduino.cc/ |access-date=2022-10-27 |website=www.arduino.cc}}</ref>
-
-Arduino board designs use a variety of [[microprocessor]]s and controllers. The boards are equipped with sets of digital and analog [[input/output]] (I/O) pins that may be interfaced to various expansion boards ('shields') or [[breadboards]] (for prototyping) and other circuits. The boards feature serial communications interfaces, including [[Universal Serial Bus]] (USB) on some models, which are also used for loading programs. The microcontrollers can be programmed using the [[C (programming language)|C]] and [[C++]] [[programming language]]s (Embedded C), using a standard API which is also known as the '''Arduino Programming Language''', inspired by the [[Processing (programming language)|Processing language]] and used with a modified version of the Processing IDE. In addition to using traditional [[compiler]] [[toolchains]], the Arduino project provides an [[integrated development environment]] (IDE) and a command line tool developed in [[Go (programming language)|Go]].
-
-The Arduino project began in 2005 as a tool for students at the [[Interaction Design Institute Ivrea]], Italy,<ref name="kushner">{{Cite journal |last=Kushner |first=David |date=2011-10-26 |title=The Making of Arduino |url=https://spectrum.ieee.org/the-making-of-arduino |journal=[[IEEE Spectrum]]}}</ref> aiming to provide a low-cost and easy way for novices and professionals to create devices that interact with their environment using [[sensor]]s and [[actuator]]s. Common examples of such devices intended for beginner hobbyists include simple [[robot]]s, [[thermostat]]s, and [[motion detector]]s.
-
-The name ''Arduino'' comes from a café in [[Ivrea]], Italy, where some of the project's founders used to meet. The bar was named after [[Arduin of Ivrea]], who was the [[margrave]] of the [[March of Ivrea]] and [[King of Italy]] from 1002 to 1014.<ref>{{Cite journal |last=Lahart |first=Justin |date=27 November 2009 |title=Taking an Open-Source Approach to Hardware |url=https://www.wsj.com/articles/SB10001424052748703499404574559960271468066 |journal=[[The Wall Street Journal]] |access-date=2014-09-07}}</ref>
-
-==History==
-
-===Founding===
-[[File:The first Arduino.jpeg|thumb|The first prototype<ref name="kushner" />]]
-The Arduino project was started at the [[Interaction Design Institute Ivrea]] (IDII) in [[Ivrea]], Italy.<ref name="kushner" /> At that time, the students used a [[BASIC Stamp]] [[microcontroller]] at a cost of $50. In 2004, [[Hernando Barragán]] created the development platform ''[[Wiring (development platform)|Wiring]]'' as a Master's thesis project at IDII, under the supervision of Massimo Banzi and [[Casey Reas]]. Casey Reas is known for co-creating, with Ben Fry, the [[Processing]] development platform. The project goal was to create simple, low cost tools for creating digital projects by non-engineers. The Wiring platform consisted of a [[printed circuit board]] (PCB) with an [[ATmega]]128 microcontroller, an IDE based on Processing and library functions to easily program the microcontroller.<ref name=":0">{{Cite web |last=Barragán |first=Hernando |date=2016-01-01 |title=The Untold History of Arduino |url=https://arduinohistory.github.io |access-date=2016-03-06 |website=arduinohistory.github.io}}</ref>
-In 2005, Massimo Banzi, with David Mellis, another IDII student, and David Cuartielles, extended Wiring by adding support for the cheaper ATmega8 microcontroller. The new project, forked from Wiring, was called ''Arduino''.<ref name=":0" />
-
-The initial Arduino core team consisted of Massimo Banzi, David Cuartielles, Tom Igoe, Gianluca Martino, and David Mellis.<ref name="kushner" />
-
-Following the completion of the platform, lighter and less expensive versions were distributed in the open-source community. It was estimated in mid-2011 that over 300,000 official Arduinos had been commercially produced,<ref>{{Cite web |date=May 15, 2011 |title=How many Arduinos are "in the wild?" About 300,000 |url=http://www.adafruit.com/blog/2011/05/15/how-many-arduinos-are-in-the-wild-about-300000/ |access-date=2013-05-26 |publisher=[[Adafruit Industries]]}}</ref> and in 2013 that 700,000 official boards were in users' hands.<ref>{{Cite web |date=April 5, 2013 |title=Arduino FAQ – With David Cuartielles |url=http://medea.mah.se/2013/04/arduino-faq// |url-status=dead |archive-url=https://web.archive.org/web/20170906182556/http://medea.mah.se/2013/04/arduino-faq/ |archive-date=2017-09-06 |access-date=2014-03-24 |publisher=[[Malmö University]]}}</ref>
-
-===Trademark dispute===
-In early 2008, the five co-founders of the Arduino project created a company, Arduino LLC,<ref>{{Cite web |title=Business Entity Summary for Arduino LLC |url=http://corp.sec.state.ma.us/CorpWeb/CorpSearch/CorpSummary.aspx?FEIN=262323943&SEARCH_TYPE=1 |website=Mass.gov |publisher=State of Massachusetts}}</ref> to hold the trademarks associated with Arduino. The manufacture and sale of the boards were to be done by external companies, and Arduino LLC would get a royalty from them. The founding bylaws of Arduino LLC specified that each of the five founders transfer ownership of the Arduino brand to the newly formed company.{{Citation needed|date=September 2015}}
-
-At the end of 2008, Gianluca Martino's company, Smart Projects, registered the Arduino trademark in Italy and kept this a secret from the other co-founders for about two years. This was revealed when the Arduino company tried to register the trademark in other areas of the world (they originally registered only in the US), and discovered that it was already registered in Italy. Negotiations with Martino and his firm to bring the trademark under the control of the original Arduino company failed. In 2014, Smart Projects began refusing to pay royalties. They then appointed a new CEO, Federico Musto, who renamed the company ''Arduino SRL'' and created the website ''arduino.org'', copying the graphics and layout of the original ''arduino.cc''. This resulted in a rift in the Arduino development team.<ref>{{Cite web |last=Allan |first=Alasdair |date=6 March 2015 |title=Arduino Wars: Group Splits, Competing Products Revealed? |url=http://makezine.com/2015/03/06/arduino-vs-arduino/ |access-date=21 April 2015 |website=makezine.com |publisher=Maker Media, Inc.}}</ref><ref>{{Cite web |last=Banzi |first=Massimo |date=19 March 2015 |title=Massimo Banzi: Fighting for Arduino |url=http://makezine.com/2015/03/19/massimo-banzi-fighting-for-arduino/ |access-date=21 April 2015 |website=makezine.com |publisher=Maker Media, Inc.}}</ref><ref>{{Cite web |last=Williams |first=Elliot |date=28 March 2015 |title=Arduino SRL to Distributors: "We're the Real Arduino" |url=http://hackaday.com/2015/03/28/arduino-srl-to-distributors-were-the-real-arduino/ |access-date=21 April 2015 |website=Hackaday.com }}</ref>
-
-In January 2015, Arduino LLC filed a lawsuit against Arduino SRL.<ref>{{Cite web |title=Arduino LLC vs Arduino SRL lawsuit; United States Courts Archive. |url=https://www.unitedstatescourts.org/federal/mad/167131/ |url-status=dead |archive-url=https://web.archive.org/web/20170709234951/https://www.unitedstatescourts.org/federal/mad/167131/ |archive-date=2017-07-09 |access-date=20 February 2018}}</ref>
-
-In May 2015, Arduino LLC created the worldwide trademark '''Genuino''', used as brand name outside the United States.<ref>{{Cite web |date=16 May 2015 |title=Arduino Announces New Brand, Genuino, Manufacturing Partnership with Adafruit |url=http://makezine.com/2015/05/16/arduino-adafruit-manufacturing-genuino/ |access-date=17 May 2015 |website=Make}}</ref>
-
-At the World [[Maker Faire]] in New York on 1 October 2016, Arduino LLC co-founder and CEO Massimo Banzi and Arduino SRL CEO Federico Musto announced the merger of the two companies, forming Arduino AG.<ref>{{Cite web |date=October 2016 |title=Arduino Blog – Two Arduinos become one |url=https://blog.arduino.cc/2016/10/01/two-arduinos-become-one-2/ |access-date=2016-10-02 |website=Arduino Blog}}</ref> Around that same time, Massimo Banzi announced that in addition to the company a new Arduino Foundation would be launched as "a new beginning for Arduino", but this decision was withdrawn later.<ref>{{Cite news |date=2017-06-09 |title=Free Arduino {{!}} Make |language=en-US |work=Make: DIY Projects and Ideas for Makers |url=https://makezine.com/2017/06/09/free-arduino/ |access-date=2017-12-22}}</ref><ref>{{Cite news |date=2017-06-19 |title=The Arduino Foundation: What's Up? |language=en-US |work=Hackaday |url=https://hackaday.com/2017/06/19/the-arduino-foundation-whats-up/ |access-date=2017-12-22}}</ref><ref>{{Cite web |date=2024-04-10 |title=A New Era for Arduino: Original Arduino Founders Finally Get 100% Control |url=https://audioxpress.com/news/a-new-era-for-arduino-original-arduino-founders-finally-get-100-control |access-date=2024-05-10 |website=audioXpress |language=en}}</ref>
-
-In April 2017, [[Wired (magazine)|Wired]] reported that Musto had "fabricated his academic record... On his company's website, personal LinkedIn accounts, and even on Italian business documents, Musto was, until recently, listed as holding a Ph.D. from the Massachusetts Institute of Technology. In some cases, his biography also claimed an MBA from New York University." Wired reported that neither university had any record of Musto's attendance, and Musto later admitted in an interview with Wired that he had never earned those degrees.<ref>{{Cite magazine |title=Arduino's New CEO, Federico Musto, May Have Fabricated His Academic Record |url=https://www.wired.com/2017/04/arduinos-new-ceo-federico-musto-may-fabricated-academic-record/ |magazine=WIRED |language=en-US |access-date=2017-12-22}}</ref> The controversy surrounding Musto continued when, in July 2017, he reportedly pulled many [[open source]] licenses, schematics, and code from the Arduino website, prompting scrutiny and outcry.<ref>{{Cite news |last=Biggs |first=John |title=CEO controversy mars Arduino's open future |language=en |work=TechCrunch |url=https://techcrunch.com/2017/07/26/ceo-controversy-mars-arduinos-open-future/ |access-date=2017-12-22}}</ref>
-
-By 2017 Arduino AG owned many Arduino trademarks. In July 2017 BCMI, founded by Massimo Banzi, David Cuartielles, David Mellis and Tom Igoe, acquired Arduino AG and all the Arduino trademarks. Fabio Violante is the new CEO replacing Federico Musto, who no longer works for Arduino AG.<ref>{{Cite web |date=28 July 2017 |title=Arduino Blog – A new era for Arduino begins today |url=https://blog.arduino.cc/2017/07/28/a-new-era-for-arduino-begins-today/ |access-date=19 Jan 2018 |website=Arduino Blog}}</ref><ref>{{Cite web |last=Davis |first=Tom |date=31 July 2017 |title=BCMI Acquires Arduino AG and Makers Breathe a Sigh of Relief |url=https://techwombat.com/bcmi-acquires-arduino-ag-makers-breathe-sigh-relief/ |access-date=29 November 2018 |website=techwombat.com}}</ref>
-
-=== Post-dispute ===
-In October 2017, Arduino announced its partnership with [[Arm Holdings]] (ARM). The announcement said, in part, "ARM recognized independence as a core value of Arduino ... without any lock-in with the [[ARM architecture]]". Arduino intends to continue to work with all technology vendors and architectures.<ref>{{Cite news |date=2017-10-06 |title=Arduino reborn partners with ARM |language=en-GB |work=Electronics Weekly |url=https://www.electronicsweekly.com/blogs/distribution-world/arduino-reborn-partners-arm-2017-10/ |access-date=2017-11-03}}</ref> Under Violante's guidance, the company started growing again and releasing new designs. The Genuino trademark was dismissed and all products were branded again with the Arduino name.
-
-In August 2018, Arduino announced its new open source command line tool ([https://github.com/arduino/arduino-cli arduino-cli]), which can be used as a replacement of the IDE to program the boards from a shell.<ref>{{Cite web |date=2018-08-24 |title=Announcing the Arduino Command Line Interface (CLI) |url=https://blog.arduino.cc/2018/08/24/announcing-the-arduino-command-line-interface-cli/ |access-date=2020-06-23 |website=Arduino Blog |language=en}}</ref>
-
-In February 2019, Arduino announced its IoT Cloud service as an extension of the Create online environment.<ref>{{Cite web |date=2019-02-06 |title=Announcing the Arduino IoT Cloud Public Beta |url=https://blog.arduino.cc/2019/02/06/announcing-the-arduino-iot-cloud-public-beta/ |access-date=2020-06-23 |website=Arduino Blog |language=en}}</ref>
-
-As of February 2020, the Arduino community included about 30 million active users based on the IDE downloads.<ref>{{Cite web |last=Emilio |first=Maurizio Di Paolo |date=2020-02-04 |title=Open-source HW in the Modern Era: Interview of Arduino's CEO Fabio Violante |url=https://www.eetimes.eu/open-source-hardware-in-the-modern-era-interview-of-arduinos-ceo-fabio-violante/ |access-date=2020-06-23 |website=EE Times Europe |language=en-US}}</ref>
-
-==Hardware==
-[[File:Arduino-compatible R3 UNO Sku066313-01.jpg|thumb|Arduino-compatible R3 [[Arduino Uno|Uno]] board with no Arduino logo]]
-
-Arduino is [[open-source hardware]]. The hardware reference designs are distributed under a [[Creative Commons]] Attribution Share-Alike 2.5 license and are available on the Arduino website. Layout and production files for some versions of the hardware are also available.
-
-Although the hardware and software designs are freely available under [[copyleft]] licenses, the developers have requested the name ''Arduino'' to be [[generic trademark|exclusive to the official product]] and not be used for derived works without permission. The official policy document on the use of the Arduino name emphasizes that the project is open to incorporating work by others into the official product.<ref name="AutoF7-44" /> Several Arduino-compatible products commercially released have avoided the project name by using various names ending in ''-duino''.<ref name="freeduino" />
-
-[[File:Arduino316.jpg|thumb|An early Arduino board<ref>{{Cite web |title=Hardware Index |url=https://www.arduino.cc/en/main/boards |access-date=2013-12-10 |publisher=Arduino Project}}</ref> with an [[RS-232]] [[serial communication|serial]] interface (upper left) and an Atmel ATmega8 microcontroller chip (black, lower right); the 14 digital I/O pins are at the top, the 6 analog input pins at the lower right, and the power connector at the lower left.]]
-
-Most Arduino boards consist of an [[Atmel]] 8-bit [[AVR microcontroller]] (ATmega8,<ref>{{Cite news |title=Chip Hall of Fame: Atmel ATmega8 |language=en |work=IEEE Spectrum: Technology, Engineering, and Science News |url=https://spectrum.ieee.org/chip-hall-of-fame-atmel-atmega8 |access-date=2017-10-10}}</ref> ATmega168, [[ATmega328]], ATmega1280, or ATmega2560) with varying amounts of flash memory, pins, and features.<ref>{{Cite web |title=Arduino - Products |url=https://www.arduino.cc/en/Main/Products |access-date=20 February 2018 |website=www.arduino.cc}}</ref> The 32-bit [[Arduino Due]], based on the Atmel [[Atmel ARM-based processors#SAM 3|SAM3X8E]] was introduced in 2012.<ref>{{Cite magazine |title=Microcontroller Maniacs Rejoice: Arduino Finally Releases the 32-Bit Due |url=https://www.wired.com/2012/10/arduino-due/ |magazine=Wired |access-date=20 February 2018}}</ref> The boards use single or double-row pins or female headers that facilitate connections for programming and incorporation into other circuits. These may connect with add-on modules termed ''shields''. Multiple and possibly stacked shields may be individually addressable via an [[I²C]] [[serial bus]]. Most boards include a 5 V [[linear regulator]] and a 16 MHz [[crystal oscillator]] or [[ceramic resonator]]. Some designs, such as the LilyPad,<ref>{{Cite journal |last1=Di Tore |first1=Stefano |last2=Todino |first2=Michele Domenic |last3=Plutino |first3=Antonia |year=2019 |title=Le wearable technologies e la metafora dei sei cappelli per pensare a supporto del seamless learning |journal=Professionalità |volume=4 |issue=II |pages=118–13|issn=0392-2790}}</ref> run at 8 MHz and dispense with the onboard voltage regulator due to specific [[form factor (design)|form factor]] restrictions.
-
-Arduino microcontrollers are pre-programmed with a [[bootloader]] that simplifies the uploading of programs to the on-chip [[flash memory]]. The default bootloader of the Arduino Uno is the Optiboot bootloader.<ref>{{Cite web |title=Optiboot Bootloader for Arduino and Atmel AVR |url=https://github.com/Optiboot/optiboot |access-date=2015-10-01 |website=[[GitHub]]}}</ref> Boards are loaded with program code via a serial connection to another computer. Some serial Arduino boards contain a [[level shifter]] circuit to convert between [[RS-232]] logic levels and [[transistor–transistor logic]] ([[TTL serial]]) level signals. Current Arduino boards are programmed via [[Universal Serial Bus]] (USB), implemented using USB-to-serial adapter chips such as the [[FTDI]] FT232. Some boards, such as later-model Uno boards, substitute the [[FTDI]] chip with a separate AVR chip containing USB-to-serial firmware, which is reprogrammable via its own [[In-system programming|ICSP]] header. Other variants, such as the Arduino Mini and the unofficial Boarduino, use a detachable USB-to-serial adapter board or cable, [[Bluetooth]] or other methods. When used with traditional microcontroller tools, instead of the Arduino IDE, standard AVR [[in-system programming]] (ISP) programming is used.
-
-[[File:UnoConnections.jpg|thumb|An official Arduino Uno R2 with descriptions of the I/O locations]]
-
-The Arduino board exposes most of the microcontroller's I/O pins for use by other circuits. The ''Diecimila'',{{Efn|name="N10000"|''Diecimila'' means "ten thousand" in Italian}} ''Duemilanove'',{{Efn|name="N2009"|''Duemilanove'' means "two thousand and nine" in Italian}} and current ''Uno''{{Efn|name="N1"|''Uno'' means "one" in Italian}} provide 14 digital I/O pins, six of which can produce [[pulse-width modulation|pulse-width modulated]] signals, and six analog inputs, which can also be used as six digital I/O pins. These pins are on the top of the board, via female 0.1-inch (2.54 mm) headers. Several plug-in application shields are also commercially available. The Arduino Nano and Arduino-compatible Bare Bones Board<ref>{{Cite web |title=Bare Bones Board (BBB) Kit |url=http://moderndevice.com/product/bare-bones-board-bbb-kit/ |access-date=29 November 2018 |website=moderndevice.com |archive-date=30 July 2013 |archive-url=https://web.archive.org/web/20130730012610/http://moderndevice.com/product/bare-bones-board-bbb-kit/ |url-status=dead }}</ref> and Boarduino<ref>{{Cite web |title=DC Boarduino (Arduino compatible) Kit (w/ATmega328) - v1.0 |url=https://www.adafruit.com/products/72 |access-date=29 November 2018 |website=adafruit.com}}</ref> boards may provide male header pins on the underside of the board that can plug into solderless [[breadboard]]s.
-
-Many Arduino-compatible and Arduino-derived boards exist. Some are functionally equivalent to an Arduino and can be used interchangeably. Many enhance the basic Arduino by adding output drivers, often for use in school-level education,<ref>{{Cite journal |last1=Di Tore |first1=Stefano |last2=Todino |first2=Michele |last3=Sibilio |first3=Maurizio |date=2019-04-30 |title=Disuffo: Design, prototyping, and development of an open-source educational robot |url=https://oaj.fupress.net/index.php/formare/article/view/3792 |journal=Form@re - Open Journal per la Formazione in Rete |language=it |volume=19 |issue=1 |pages=106–116 |doi=10.13128/FORMARE-24446|s2cid=181368197 }}</ref> to simplify making buggies and small robots. Others are electrically equivalent, but change the form factor, sometimes retaining compatibility with shields, sometimes not. Some variants use different processors, of varying compatibility.
-
-===Official boards===
-{{Further|List of Arduino boards and compatible systems}}
-The original Arduino hardware was manufactured by the Italian company Smart Projects.<ref name="smartprojects" /> Some Arduino-branded boards have been designed by the American companies [[SparkFun Electronics]] and [[Adafruit Industries]].<ref>{{Cite book |last=Schmidt |first=Maik |url=http://worldcat.org/oclc/1328333803 |title=Arduino : a quick-start guide |isbn=1-68050-523-8 |page=201 |oclc=1328333803}}</ref> {{As of|2016}}, 17 versions of the Arduino hardware have been commercially produced.
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2 => ''''Arduino''' ({{IPAc-en|ɑː|r|ˈ|d|w|iː|n|oʊ}}) is an Italian [[open-source hardware]] and [[open-source software|software]] company, project, and user community that designs and manufactures [[single-board microcontroller]]s and [[microcontroller]] kits for building digital devices. Its hardware products are licensed under a [[Creative Commons license|CC BY-SA license]], while the software is licensed under the [[GNU Lesser General Public License]] (LGPL) or the [[GNU General Public License]] (GPL),<ref>{{Cite web |title=Getting Started: FOUNDATION > Introduction |url=https://www.arduino.cc/en/guide/introduction |url-status=dead |archive-url=https://web.archive.org/web/20170829015201/https://www.arduino.cc/en/Guide/Introduction |archive-date=2017-08-29 |access-date=2017-05-23 |website=arduino.cc}}</ref> permitting the [[manufacture]] of Arduino boards and software distribution by anyone. Arduino boards are available commercially from the official [[website]] or through authorized distributors.<ref>{{Cite web |title=Arduino - Home |url=https://www.arduino.cc/ |access-date=2022-10-27 |website=www.arduino.cc}}</ref>',
3 => '',
4 => 'Arduino board designs use a variety of [[microprocessor]]s and controllers. The boards are equipped with sets of digital and analog [[input/output]] (I/O) pins that may be interfaced to various expansion boards ('shields') or [[breadboards]] (for prototyping) and other circuits. The boards feature serial communications interfaces, including [[Universal Serial Bus]] (USB) on some models, which are also used for loading programs. The microcontrollers can be programmed using the [[C (programming language)|C]] and [[C++]] [[programming language]]s (Embedded C), using a standard API which is also known as the '''Arduino Programming Language''', inspired by the [[Processing (programming language)|Processing language]] and used with a modified version of the Processing IDE. In addition to using traditional [[compiler]] [[toolchains]], the Arduino project provides an [[integrated development environment]] (IDE) and a command line tool developed in [[Go (programming language)|Go]].',
5 => '',
6 => 'The Arduino project began in 2005 as a tool for students at the [[Interaction Design Institute Ivrea]], Italy,<ref name="kushner">{{Cite journal |last=Kushner |first=David |date=2011-10-26 |title=The Making of Arduino |url=https://spectrum.ieee.org/the-making-of-arduino |journal=[[IEEE Spectrum]]}}</ref> aiming to provide a low-cost and easy way for novices and professionals to create devices that interact with their environment using [[sensor]]s and [[actuator]]s. Common examples of such devices intended for beginner hobbyists include simple [[robot]]s, [[thermostat]]s, and [[motion detector]]s.',
7 => '',
8 => 'The name ''Arduino'' comes from a café in [[Ivrea]], Italy, where some of the project's founders used to meet. The bar was named after [[Arduin of Ivrea]], who was the [[margrave]] of the [[March of Ivrea]] and [[King of Italy]] from 1002 to 1014.<ref>{{Cite journal |last=Lahart |first=Justin |date=27 November 2009 |title=Taking an Open-Source Approach to Hardware |url=https://www.wsj.com/articles/SB10001424052748703499404574559960271468066 |journal=[[The Wall Street Journal]] |access-date=2014-09-07}}</ref>',
9 => '',
10 => '==History==',
11 => '',
12 => '===Founding===',
13 => '[[File:The first Arduino.jpeg|thumb|The first prototype<ref name="kushner" />]]',
14 => 'The Arduino project was started at the [[Interaction Design Institute Ivrea]] (IDII) in [[Ivrea]], Italy.<ref name="kushner" /> At that time, the students used a [[BASIC Stamp]] [[microcontroller]] at a cost of $50. In 2004, [[Hernando Barragán]] created the development platform ''[[Wiring (development platform)|Wiring]]'' as a Master's thesis project at IDII, under the supervision of Massimo Banzi and [[Casey Reas]]. Casey Reas is known for co-creating, with Ben Fry, the [[Processing]] development platform. The project goal was to create simple, low cost tools for creating digital projects by non-engineers. The Wiring platform consisted of a [[printed circuit board]] (PCB) with an [[ATmega]]128 microcontroller, an IDE based on Processing and library functions to easily program the microcontroller.<ref name=":0">{{Cite web |last=Barragán |first=Hernando |date=2016-01-01 |title=The Untold History of Arduino |url=https://arduinohistory.github.io |access-date=2016-03-06 |website=arduinohistory.github.io}}</ref>',
15 => 'In 2005, Massimo Banzi, with David Mellis, another IDII student, and David Cuartielles, extended Wiring by adding support for the cheaper ATmega8 microcontroller. The new project, forked from Wiring, was called ''Arduino''.<ref name=":0" />',
16 => '',
17 => 'The initial Arduino core team consisted of Massimo Banzi, David Cuartielles, Tom Igoe, Gianluca Martino, and David Mellis.<ref name="kushner" />',
18 => '',
19 => 'Following the completion of the platform, lighter and less expensive versions were distributed in the open-source community. It was estimated in mid-2011 that over 300,000 official Arduinos had been commercially produced,<ref>{{Cite web |date=May 15, 2011 |title=How many Arduinos are "in the wild?" About 300,000 |url=http://www.adafruit.com/blog/2011/05/15/how-many-arduinos-are-in-the-wild-about-300000/ |access-date=2013-05-26 |publisher=[[Adafruit Industries]]}}</ref> and in 2013 that 700,000 official boards were in users' hands.<ref>{{Cite web |date=April 5, 2013 |title=Arduino FAQ – With David Cuartielles |url=http://medea.mah.se/2013/04/arduino-faq// |url-status=dead |archive-url=https://web.archive.org/web/20170906182556/http://medea.mah.se/2013/04/arduino-faq/ |archive-date=2017-09-06 |access-date=2014-03-24 |publisher=[[Malmö University]]}}</ref>',
20 => '',
21 => '===Trademark dispute===',
22 => 'In early 2008, the five co-founders of the Arduino project created a company, Arduino LLC,<ref>{{Cite web |title=Business Entity Summary for Arduino LLC |url=http://corp.sec.state.ma.us/CorpWeb/CorpSearch/CorpSummary.aspx?FEIN=262323943&SEARCH_TYPE=1 |website=Mass.gov |publisher=State of Massachusetts}}</ref> to hold the trademarks associated with Arduino. The manufacture and sale of the boards were to be done by external companies, and Arduino LLC would get a royalty from them. The founding bylaws of Arduino LLC specified that each of the five founders transfer ownership of the Arduino brand to the newly formed company.{{Citation needed|date=September 2015}}',
23 => '',
24 => 'At the end of 2008, Gianluca Martino's company, Smart Projects, registered the Arduino trademark in Italy and kept this a secret from the other co-founders for about two years. This was revealed when the Arduino company tried to register the trademark in other areas of the world (they originally registered only in the US), and discovered that it was already registered in Italy. Negotiations with Martino and his firm to bring the trademark under the control of the original Arduino company failed. In 2014, Smart Projects began refusing to pay royalties. They then appointed a new CEO, Federico Musto, who renamed the company ''Arduino SRL'' and created the website ''arduino.org'', copying the graphics and layout of the original ''arduino.cc''. This resulted in a rift in the Arduino development team.<ref>{{Cite web |last=Allan |first=Alasdair |date=6 March 2015 |title=Arduino Wars: Group Splits, Competing Products Revealed? |url=http://makezine.com/2015/03/06/arduino-vs-arduino/ |access-date=21 April 2015 |website=makezine.com |publisher=Maker Media, Inc.}}</ref><ref>{{Cite web |last=Banzi |first=Massimo |date=19 March 2015 |title=Massimo Banzi: Fighting for Arduino |url=http://makezine.com/2015/03/19/massimo-banzi-fighting-for-arduino/ |access-date=21 April 2015 |website=makezine.com |publisher=Maker Media, Inc.}}</ref><ref>{{Cite web |last=Williams |first=Elliot |date=28 March 2015 |title=Arduino SRL to Distributors: "We're the Real Arduino" |url=http://hackaday.com/2015/03/28/arduino-srl-to-distributors-were-the-real-arduino/ |access-date=21 April 2015 |website=Hackaday.com }}</ref>',
25 => '',
26 => 'In January 2015, Arduino LLC filed a lawsuit against Arduino SRL.<ref>{{Cite web |title=Arduino LLC vs Arduino SRL lawsuit; United States Courts Archive. |url=https://www.unitedstatescourts.org/federal/mad/167131/ |url-status=dead |archive-url=https://web.archive.org/web/20170709234951/https://www.unitedstatescourts.org/federal/mad/167131/ |archive-date=2017-07-09 |access-date=20 February 2018}}</ref>',
27 => '',
28 => 'In May 2015, Arduino LLC created the worldwide trademark '''Genuino''', used as brand name outside the United States.<ref>{{Cite web |date=16 May 2015 |title=Arduino Announces New Brand, Genuino, Manufacturing Partnership with Adafruit |url=http://makezine.com/2015/05/16/arduino-adafruit-manufacturing-genuino/ |access-date=17 May 2015 |website=Make}}</ref>',
29 => '',
30 => 'At the World [[Maker Faire]] in New York on 1 October 2016, Arduino LLC co-founder and CEO Massimo Banzi and Arduino SRL CEO Federico Musto announced the merger of the two companies, forming Arduino AG.<ref>{{Cite web |date=October 2016 |title=Arduino Blog – Two Arduinos become one |url=https://blog.arduino.cc/2016/10/01/two-arduinos-become-one-2/ |access-date=2016-10-02 |website=Arduino Blog}}</ref> Around that same time, Massimo Banzi announced that in addition to the company a new Arduino Foundation would be launched as "a new beginning for Arduino", but this decision was withdrawn later.<ref>{{Cite news |date=2017-06-09 |title=Free Arduino {{!}} Make |language=en-US |work=Make: DIY Projects and Ideas for Makers |url=https://makezine.com/2017/06/09/free-arduino/ |access-date=2017-12-22}}</ref><ref>{{Cite news |date=2017-06-19 |title=The Arduino Foundation: What's Up? |language=en-US |work=Hackaday |url=https://hackaday.com/2017/06/19/the-arduino-foundation-whats-up/ |access-date=2017-12-22}}</ref><ref>{{Cite web |date=2024-04-10 |title=A New Era for Arduino: Original Arduino Founders Finally Get 100% Control |url=https://audioxpress.com/news/a-new-era-for-arduino-original-arduino-founders-finally-get-100-control |access-date=2024-05-10 |website=audioXpress |language=en}}</ref>',
31 => '',
32 => 'In April 2017, [[Wired (magazine)|Wired]] reported that Musto had "fabricated his academic record... On his company's website, personal LinkedIn accounts, and even on Italian business documents, Musto was, until recently, listed as holding a Ph.D. from the Massachusetts Institute of Technology. In some cases, his biography also claimed an MBA from New York University." Wired reported that neither university had any record of Musto's attendance, and Musto later admitted in an interview with Wired that he had never earned those degrees.<ref>{{Cite magazine |title=Arduino's New CEO, Federico Musto, May Have Fabricated His Academic Record |url=https://www.wired.com/2017/04/arduinos-new-ceo-federico-musto-may-fabricated-academic-record/ |magazine=WIRED |language=en-US |access-date=2017-12-22}}</ref> The controversy surrounding Musto continued when, in July 2017, he reportedly pulled many [[open source]] licenses, schematics, and code from the Arduino website, prompting scrutiny and outcry.<ref>{{Cite news |last=Biggs |first=John |title=CEO controversy mars Arduino's open future |language=en |work=TechCrunch |url=https://techcrunch.com/2017/07/26/ceo-controversy-mars-arduinos-open-future/ |access-date=2017-12-22}}</ref>',
33 => '',
34 => 'By 2017 Arduino AG owned many Arduino trademarks. In July 2017 BCMI, founded by Massimo Banzi, David Cuartielles, David Mellis and Tom Igoe, acquired Arduino AG and all the Arduino trademarks. Fabio Violante is the new CEO replacing Federico Musto, who no longer works for Arduino AG.<ref>{{Cite web |date=28 July 2017 |title=Arduino Blog – A new era for Arduino begins today |url=https://blog.arduino.cc/2017/07/28/a-new-era-for-arduino-begins-today/ |access-date=19 Jan 2018 |website=Arduino Blog}}</ref><ref>{{Cite web |last=Davis |first=Tom |date=31 July 2017 |title=BCMI Acquires Arduino AG and Makers Breathe a Sigh of Relief |url=https://techwombat.com/bcmi-acquires-arduino-ag-makers-breathe-sigh-relief/ |access-date=29 November 2018 |website=techwombat.com}}</ref>',
35 => '',
36 => '=== Post-dispute ===',
37 => 'In October 2017, Arduino announced its partnership with [[Arm Holdings]] (ARM). The announcement said, in part, "ARM recognized independence as a core value of Arduino ... without any lock-in with the [[ARM architecture]]". Arduino intends to continue to work with all technology vendors and architectures.<ref>{{Cite news |date=2017-10-06 |title=Arduino reborn partners with ARM |language=en-GB |work=Electronics Weekly |url=https://www.electronicsweekly.com/blogs/distribution-world/arduino-reborn-partners-arm-2017-10/ |access-date=2017-11-03}}</ref> Under Violante's guidance, the company started growing again and releasing new designs. The Genuino trademark was dismissed and all products were branded again with the Arduino name.',
38 => '',
39 => 'In August 2018, Arduino announced its new open source command line tool ([https://github.com/arduino/arduino-cli arduino-cli]), which can be used as a replacement of the IDE to program the boards from a shell.<ref>{{Cite web |date=2018-08-24 |title=Announcing the Arduino Command Line Interface (CLI) |url=https://blog.arduino.cc/2018/08/24/announcing-the-arduino-command-line-interface-cli/ |access-date=2020-06-23 |website=Arduino Blog |language=en}}</ref>',
40 => '',
41 => 'In February 2019, Arduino announced its IoT Cloud service as an extension of the Create online environment.<ref>{{Cite web |date=2019-02-06 |title=Announcing the Arduino IoT Cloud Public Beta |url=https://blog.arduino.cc/2019/02/06/announcing-the-arduino-iot-cloud-public-beta/ |access-date=2020-06-23 |website=Arduino Blog |language=en}}</ref>',
42 => '',
43 => 'As of February 2020, the Arduino community included about 30 million active users based on the IDE downloads.<ref>{{Cite web |last=Emilio |first=Maurizio Di Paolo |date=2020-02-04 |title=Open-source HW in the Modern Era: Interview of Arduino's CEO Fabio Violante |url=https://www.eetimes.eu/open-source-hardware-in-the-modern-era-interview-of-arduinos-ceo-fabio-violante/ |access-date=2020-06-23 |website=EE Times Europe |language=en-US}}</ref>',
44 => '',
45 => '==Hardware==',
46 => '[[File:Arduino-compatible R3 UNO Sku066313-01.jpg|thumb|Arduino-compatible R3 [[Arduino Uno|Uno]] board with no Arduino logo]]',
47 => '',
48 => 'Arduino is [[open-source hardware]]. The hardware reference designs are distributed under a [[Creative Commons]] Attribution Share-Alike 2.5 license and are available on the Arduino website. Layout and production files for some versions of the hardware are also available.',
49 => '',
50 => 'Although the hardware and software designs are freely available under [[copyleft]] licenses, the developers have requested the name ''Arduino'' to be [[generic trademark|exclusive to the official product]] and not be used for derived works without permission. The official policy document on the use of the Arduino name emphasizes that the project is open to incorporating work by others into the official product.<ref name="AutoF7-44" /> Several Arduino-compatible products commercially released have avoided the project name by using various names ending in ''-duino''.<ref name="freeduino" />',
51 => '',
52 => '[[File:Arduino316.jpg|thumb|An early Arduino board<ref>{{Cite web |title=Hardware Index |url=https://www.arduino.cc/en/main/boards |access-date=2013-12-10 |publisher=Arduino Project}}</ref> with an [[RS-232]] [[serial communication|serial]] interface (upper left) and an Atmel ATmega8 microcontroller chip (black, lower right); the 14 digital I/O pins are at the top, the 6 analog input pins at the lower right, and the power connector at the lower left.]]',
53 => '',
54 => 'Most Arduino boards consist of an [[Atmel]] 8-bit [[AVR microcontroller]] (ATmega8,<ref>{{Cite news |title=Chip Hall of Fame: Atmel ATmega8 |language=en |work=IEEE Spectrum: Technology, Engineering, and Science News |url=https://spectrum.ieee.org/chip-hall-of-fame-atmel-atmega8 |access-date=2017-10-10}}</ref> ATmega168, [[ATmega328]], ATmega1280, or ATmega2560) with varying amounts of flash memory, pins, and features.<ref>{{Cite web |title=Arduino - Products |url=https://www.arduino.cc/en/Main/Products |access-date=20 February 2018 |website=www.arduino.cc}}</ref> The 32-bit [[Arduino Due]], based on the Atmel [[Atmel ARM-based processors#SAM 3|SAM3X8E]] was introduced in 2012.<ref>{{Cite magazine |title=Microcontroller Maniacs Rejoice: Arduino Finally Releases the 32-Bit Due |url=https://www.wired.com/2012/10/arduino-due/ |magazine=Wired |access-date=20 February 2018}}</ref> The boards use single or double-row pins or female headers that facilitate connections for programming and incorporation into other circuits. These may connect with add-on modules termed ''shields''. Multiple and possibly stacked shields may be individually addressable via an [[I²C]] [[serial bus]]. Most boards include a 5 V [[linear regulator]] and a 16 MHz [[crystal oscillator]] or [[ceramic resonator]]. Some designs, such as the LilyPad,<ref>{{Cite journal |last1=Di Tore |first1=Stefano |last2=Todino |first2=Michele Domenic |last3=Plutino |first3=Antonia |year=2019 |title=Le wearable technologies e la metafora dei sei cappelli per pensare a supporto del seamless learning |journal=Professionalità |volume=4 |issue=II |pages=118–13|issn=0392-2790}}</ref> run at 8 MHz and dispense with the onboard voltage regulator due to specific [[form factor (design)|form factor]] restrictions.',
55 => '',
56 => 'Arduino microcontrollers are pre-programmed with a [[bootloader]] that simplifies the uploading of programs to the on-chip [[flash memory]]. The default bootloader of the Arduino Uno is the Optiboot bootloader.<ref>{{Cite web |title=Optiboot Bootloader for Arduino and Atmel AVR |url=https://github.com/Optiboot/optiboot |access-date=2015-10-01 |website=[[GitHub]]}}</ref> Boards are loaded with program code via a serial connection to another computer. Some serial Arduino boards contain a [[level shifter]] circuit to convert between [[RS-232]] logic levels and [[transistor–transistor logic]] ([[TTL serial]]) level signals. Current Arduino boards are programmed via [[Universal Serial Bus]] (USB), implemented using USB-to-serial adapter chips such as the [[FTDI]] FT232. Some boards, such as later-model Uno boards, substitute the [[FTDI]] chip with a separate AVR chip containing USB-to-serial firmware, which is reprogrammable via its own [[In-system programming|ICSP]] header. Other variants, such as the Arduino Mini and the unofficial Boarduino, use a detachable USB-to-serial adapter board or cable, [[Bluetooth]] or other methods. When used with traditional microcontroller tools, instead of the Arduino IDE, standard AVR [[in-system programming]] (ISP) programming is used.',
57 => '',
58 => '[[File:UnoConnections.jpg|thumb|An official Arduino Uno R2 with descriptions of the I/O locations]]',
59 => '',
60 => 'The Arduino board exposes most of the microcontroller's I/O pins for use by other circuits. The ''Diecimila'',{{Efn|name="N10000"|''Diecimila'' means "ten thousand" in Italian}} ''Duemilanove'',{{Efn|name="N2009"|''Duemilanove'' means "two thousand and nine" in Italian}} and current ''Uno''{{Efn|name="N1"|''Uno'' means "one" in Italian}} provide 14 digital I/O pins, six of which can produce [[pulse-width modulation|pulse-width modulated]] signals, and six analog inputs, which can also be used as six digital I/O pins. These pins are on the top of the board, via female 0.1-inch (2.54 mm) headers. Several plug-in application shields are also commercially available. The Arduino Nano and Arduino-compatible Bare Bones Board<ref>{{Cite web |title=Bare Bones Board (BBB) Kit |url=http://moderndevice.com/product/bare-bones-board-bbb-kit/ |access-date=29 November 2018 |website=moderndevice.com |archive-date=30 July 2013 |archive-url=https://web.archive.org/web/20130730012610/http://moderndevice.com/product/bare-bones-board-bbb-kit/ |url-status=dead }}</ref> and Boarduino<ref>{{Cite web |title=DC Boarduino (Arduino compatible) Kit (w/ATmega328) - v1.0 |url=https://www.adafruit.com/products/72 |access-date=29 November 2018 |website=adafruit.com}}</ref> boards may provide male header pins on the underside of the board that can plug into solderless [[breadboard]]s.',
61 => '',
62 => 'Many Arduino-compatible and Arduino-derived boards exist. Some are functionally equivalent to an Arduino and can be used interchangeably. Many enhance the basic Arduino by adding output drivers, often for use in school-level education,<ref>{{Cite journal |last1=Di Tore |first1=Stefano |last2=Todino |first2=Michele |last3=Sibilio |first3=Maurizio |date=2019-04-30 |title=Disuffo: Design, prototyping, and development of an open-source educational robot |url=https://oaj.fupress.net/index.php/formare/article/view/3792 |journal=Form@re - Open Journal per la Formazione in Rete |language=it |volume=19 |issue=1 |pages=106–116 |doi=10.13128/FORMARE-24446|s2cid=181368197 }}</ref> to simplify making buggies and small robots. Others are electrically equivalent, but change the form factor, sometimes retaining compatibility with shields, sometimes not. Some variants use different processors, of varying compatibility.',
63 => '',
64 => '===Official boards===',
65 => '{{Further|List of Arduino boards and compatible systems}}',
66 => 'The original Arduino hardware was manufactured by the Italian company Smart Projects.<ref name="smartprojects" /> Some Arduino-branded boards have been designed by the American companies [[SparkFun Electronics]] and [[Adafruit Industries]].<ref>{{Cite book |last=Schmidt |first=Maik |url=http://worldcat.org/oclc/1328333803 |title=Arduino : a quick-start guide |isbn=1-68050-523-8 |page=201 |oclc=1328333803}}</ref> {{As of|2016}}, 17 versions of the Arduino hardware have been commercially produced.'
] |
External links added in the edit (added_links) | [] |
External links removed in the edit (removed_links) | [
0 => 'http://www.adafruit.com/blog/2011/05/15/how-many-arduinos-are-in-the-wild-about-300000/',
1 => 'http://medea.mah.se/2013/04/arduino-faq//',
2 => 'https://www.wired.com/2017/04/arduinos-new-ceo-federico-musto-may-fabricated-academic-record/',
3 => 'https://makezine.com/2017/06/09/free-arduino/',
4 => 'https://hackaday.com/2017/06/19/the-arduino-foundation-whats-up/',
5 => 'https://techcrunch.com/2017/07/26/ceo-controversy-mars-arduinos-open-future/',
6 => 'https://www.electronicsweekly.com/blogs/distribution-world/arduino-reborn-partners-arm-2017-10/',
7 => 'http://makezine.com/2015/03/06/arduino-vs-arduino/',
8 => 'http://makezine.com/2015/03/19/massimo-banzi-fighting-for-arduino/',
9 => 'http://hackaday.com/2015/03/28/arduino-srl-to-distributors-were-the-real-arduino/',
10 => 'https://www.unitedstatescourts.org/federal/mad/167131/',
11 => 'http://makezine.com/2015/05/16/arduino-adafruit-manufacturing-genuino/',
12 => 'https://blog.arduino.cc/2016/10/01/two-arduinos-become-one-2/',
13 => 'https://blog.arduino.cc/2017/07/28/a-new-era-for-arduino-begins-today/',
14 => 'https://www.arduino.cc/en/Main/Policy',
15 => 'http://www.freeduino.org/freeduino_open_designs.html',
16 => 'https://www.arduino.cc/en/main/boards',
17 => 'https://github.com/Optiboot/optiboot',
18 => 'http://moderndevice.com/product/bare-bones-board-bbb-kit/',
19 => 'https://www.adafruit.com/products/72',
20 => 'http://smartprj.com/',
21 => 'https://www.arduino.cc/en/Main/Products',
22 => 'https://www.wired.com/2012/10/arduino-due/',
23 => 'https://techwombat.com/bcmi-acquires-arduino-ag-makers-breathe-sigh-relief/',
24 => 'http://corp.sec.state.ma.us/CorpWeb/CorpSearch/CorpSummary.aspx?FEIN=262323943&SEARCH_TYPE=1',
25 => 'https://web.archive.org/web/20080410220309/http://www.freeduino.org/freeduino_open_designs.html',
26 => 'https://web.archive.org/web/20160305001726/http://www.smartprj.com/',
27 => 'https://www.eetimes.eu/open-source-hardware-in-the-modern-era-interview-of-arduinos-ceo-fabio-violante/',
28 => 'https://blog.arduino.cc/2018/08/24/announcing-the-arduino-command-line-interface-cli/',
29 => 'https://blog.arduino.cc/2019/02/06/announcing-the-arduino-iot-cloud-public-beta/',
30 => 'https://github.com/arduino/arduino-cli',
31 => 'https://www.arduino.cc/en/guide/introduction',
32 => 'https://web.archive.org/web/20170829015201/https://www.arduino.cc/en/Guide/Introduction',
33 => 'https://web.archive.org/web/20170906182556/http://medea.mah.se/2013/04/arduino-faq/',
34 => 'https://oaj.fupress.net/index.php/formare/article/view/3792',
35 => 'http://worldcat.org/oclc/1328333803',
36 => 'https://api.semanticscholar.org/CorpusID:181368197',
37 => 'https://web.archive.org/web/20130730012610/http://moderndevice.com/product/bare-bones-board-bbb-kit/',
38 => 'https://doi.org/10.13128%2FFORMARE-24446',
39 => 'https://www.wsj.com/articles/SB10001424052748703499404574559960271468066',
40 => 'https://audioxpress.com/news/a-new-era-for-arduino-original-arduino-founders-finally-get-100-control',
41 => 'https://spectrum.ieee.org/the-making-of-arduino',
42 => 'https://spectrum.ieee.org/chip-hall-of-fame-atmel-atmega8',
43 => 'https://search.worldcat.org/issn/0392-2790',
44 => 'https://search.worldcat.org/oclc/1328333803'
] |
External links in the page, before the edit (old_links) | [
0 => 'https://www.arduino.cc/',
1 => 'http://www.adafruit.com/blog/2011/05/15/how-many-arduinos-are-in-the-wild-about-300000/',
2 => 'http://medea.mah.se/2013/04/arduino-faq//',
3 => 'https://www.wired.com/2017/04/arduinos-new-ceo-federico-musto-may-fabricated-academic-record/',
4 => 'https://makezine.com/2017/06/09/free-arduino/',
5 => 'https://hackaday.com/2017/06/19/the-arduino-foundation-whats-up/',
6 => 'https://techcrunch.com/2017/07/26/ceo-controversy-mars-arduinos-open-future/',
7 => 'https://www.electronicsweekly.com/blogs/distribution-world/arduino-reborn-partners-arm-2017-10/',
8 => 'http://makezine.com/2015/03/06/arduino-vs-arduino/',
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10 => 'http://hackaday.com/2015/03/28/arduino-srl-to-distributors-were-the-real-arduino/',
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38 => 'https://www.arduino.cc/en/Main/ArduinoBoardDue',
39 => 'https://www.arduino.cc/en/Main/ArduinoShields',
40 => 'http://todbot.com/blog/2006/07/11/arduino-breadboard-shield/',
41 => 'http://www.tigoe.net/pcomp/code/arduinowiring/26',
42 => 'http://shieldlist.org/',
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44 => 'http://www.engblaze.com/tutorial-using-avr-studio-5-with-arduino-projects/',
45 => 'http://c-stem.ucdavis.edu/studio/charduino/',
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63 => 'http://vimeo.com/18539129',
64 => 'https://twit.tv/shows/triangulation/episodes/110',
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66 => 'https://arduinohistory.github.io/',
67 => 'https://www.arduino.cc/reference/en/language/structure/sketch/setup/',
68 => 'https://www.arduino.cc/reference/en/language/structure/sketch/loop/',
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71 => 'https://www.arduino.cc/reference/en/language/functions/time/delay/',
72 => 'https://techwombat.com/bcmi-acquires-arduino-ag-makers-breathe-sigh-relief/',
73 => 'http://archive.aec.at/prix/#8052',
74 => 'https://arduinohistory.github.io/',
75 => 'http://corp.sec.state.ma.us/CorpWeb/CorpSearch/CorpSummary.aspx?FEIN=262323943&SEARCH_TYPE=1',
76 => 'https://www.imdb.com/title/tt1869268/',
77 => 'https://www.ted.com/talks/massimo_banzi_how_arduino_is_open_sourcing_imagination',
78 => 'https://web.archive.org/web/20170709234951/https://www.unitedstatescourts.org/federal/mad/167131/',
79 => 'https://web.archive.org/web/20080410220309/http://www.freeduino.org/freeduino_open_designs.html',
80 => 'https://web.archive.org/web/20160305001726/http://www.smartprj.com/',
81 => 'https://github.com/LNSD/Arduino-Shield-Template',
82 => 'https://hackaday.com/2019/10/21/the-arduino-ide-finally-grows-up/',
83 => 'https://www.seeedstudio.com/blog/2019/10/21/introducing-new-arduino-pro-ide-with-advanced-features/',
84 => 'https://web.archive.org/web/20190630155735/http://archive.aec.at/prix/#8052',
85 => 'https://www.eetimes.eu/open-source-hardware-in-the-modern-era-interview-of-arduinos-ceo-fabio-violante/',
86 => 'https://blog.arduino.cc/2018/08/24/announcing-the-arduino-command-line-interface-cli/',
87 => 'https://blog.arduino.cc/2019/02/06/announcing-the-arduino-iot-cloud-public-beta/',
88 => 'https://github.com/arduino/arduino-cli',
89 => 'https://blog.arduino.cc/2020/01/20/arduino-education-nominated-in-bett-awards-2020/',
90 => 'https://www.wikidata.org/wiki/Q175957#identifiers',
91 => 'http://catalogo.bne.es/uhtbin/authoritybrowse.cgi?action=display&authority_id=XX5232439',
92 => 'https://catalogue.bnf.fr/ark:/12148/cb165329562',
93 => 'https://data.bnf.fr/ark:/12148/cb165329562',
94 => 'https://d-nb.info/gnd/7692236-4',
95 => 'https://www.idref.fr/154841862',
96 => 'http://se.fi.uncoma.edu.ar/xinu-avr/',
97 => 'https://github.com/real-xinu/xinu-arduino',
98 => 'https://archive.today/20130128115914/http://www.megunolink.com/Building_an_Arduino_project_with_MegunoLink_and_Atmel_Studio_(Blink_Tutorial)',
99 => 'https://www.arduino.cc/en/guide/introduction',
100 => 'https://www.arduino.cc/',
101 => 'https://web.archive.org/web/20170829015201/https://www.arduino.cc/en/Guide/Introduction',
102 => 'https://web.archive.org/web/20170906182556/http://medea.mah.se/2013/04/arduino-faq/',
103 => 'http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-4058',
104 => 'http://id.worldcat.org/fast/1892754/',
105 => 'https://aleph.nkp.cz/F/?func=find-c&local_base=aut&ccl_term=ica=ph809013&CON_LNG=ENG',
106 => 'https://github.com/arduino/Arduino/releases/',
107 => 'https://blog.arduino.cc/2022/09/14/its-here-please-welcome-arduino-ide-2-0/',
108 => 'https://oaj.fupress.net/index.php/formare/article/view/3792',
109 => 'http://worldcat.org/oclc/1328333803',
110 => 'https://api.semanticscholar.org/CorpusID:181368197',
111 => 'https://web.archive.org/web/20130730012610/http://moderndevice.com/product/bare-bones-board-bbb-kit/',
112 => 'https://web.archive.org/web/20170702144039/http://www.tigoe.net/pcomp/code/arduinowiring/26/',
113 => 'https://web.archive.org/web/20120828135304/http://www.engblaze.com/tutorial-using-avr-studio-5-with-arduino-projects/',
114 => 'https://doi.org/10.13128%2FFORMARE-24446',
115 => 'https://www.moma.org/artists/46575',
116 => 'https://www.arduino.cc/en/software',
117 => 'https://id.loc.gov/authorities/sh2011005402',
118 => 'https://www.wsj.com/articles/SB10001424052748703499404574559960271468066',
119 => 'https://www.arduino.cc/reference/en/libraries/freertos/',
120 => 'http://olduli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request=987007574964805171',
121 => 'https://doi.org/10.3390%2Fs18020530',
122 => 'https://doi.org/10.1016%2Fj.buildenv.2016.02.010',
123 => 'https://doi.org/10.3390%2Fs16030373',
124 => 'https://doi.org/10.3390%2Fs16040528',
125 => 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5856100',
126 => 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4813948',
127 => 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4851042',
128 => 'https://ui.adsabs.harvard.edu/abs/2018Senso..18..530B',
129 => 'https://ui.adsabs.harvard.edu/abs/2016BuEnv.100..114A',
130 => 'https://ui.adsabs.harvard.edu/abs/2016Senso..16..373B',
131 => 'https://ui.adsabs.harvard.edu/abs/2016Senso..16..528L',
132 => 'https://pubmed.ncbi.nlm.nih.gov/29425185',
133 => 'https://pubmed.ncbi.nlm.nih.gov/26999132',
134 => 'https://pubmed.ncbi.nlm.nih.gov/27089337',
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136 => 'https://github.com/arduino/Arduino/wiki/Unofficial-list-of-3rd-party-boards-support-urls/',
137 => 'https://audioxpress.com/news/a-new-era-for-arduino-original-arduino-founders-finally-get-100-control',
138 => 'https://spectrum.ieee.org/the-making-of-arduino',
139 => 'https://spectrum.ieee.org/chip-hall-of-fame-atmel-atmega8',
140 => 'https://search.worldcat.org/issn/0392-2790',
141 => 'https://search.worldcat.org/oclc/1328333803',
142 => 'https://search.worldcat.org/issn/0360-1323',
143 => 'https://github.com/DeqingSun/unoDebugTestPackage',
144 => 'https://github.com/openwch/arduino_core_ch32/commit/959844e9eba655169430bf6686b2ba055823d1cd',
145 => 'https://docs.arduino.cc/learn/microcontrollers/debugging/'
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Parsed HTML source of the new revision (new_html) | '<div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Italian open-source hardware and software company</div>
<style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"LilyPad" redirects here. For other uses, see <a href="/wiki/Lily_pad_(disambiguation)" class="mw-disambig" title="Lily pad (disambiguation)">Lily pad (disambiguation)</a>.</div><p>Arduino is a little thing with a microcontroller :)<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"></p><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Arduino_(disambiguation)" class="mw-disambig" title="Arduino (disambiguation)">Arduino (disambiguation)</a>.</div>
<style data-mw-deduplicate="TemplateStyles:r1237879389">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}body.skin-minerva .mw-parser-output .infobox-header,body.skin-minerva .mw-parser-output .infobox-subheader,body.skin-minerva .mw-parser-output .infobox-above,body.skin-minerva .mw-parser-output .infobox-title,body.skin-minerva .mw-parser-output .infobox-image,body.skin-minerva .mw-parser-output .infobox-full-data,body.skin-minerva .mw-parser-output .infobox-below{text-align:center}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox hproduct vevent"><caption class="infobox-title fn summary">Arduino</caption><tbody><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Arduino_Logo_Registered.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Arduino_Logo_Registered.svg/50px-Arduino_Logo_Registered.svg.png" decoding="async" width="50" height="34" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Arduino_Logo_Registered.svg/75px-Arduino_Logo_Registered.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Arduino_Logo_Registered.svg/100px-Arduino_Logo_Registered.svg.png 2x" data-file-width="162" data-file-height="109" /></a></span> <span typeof="mw:File"><a href="/wiki/File:Genuino-Logo.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Genuino-Logo.svg/50px-Genuino-Logo.svg.png" decoding="async" width="50" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Genuino-Logo.svg/75px-Genuino-Logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Genuino-Logo.svg/100px-Genuino-Logo.svg.png 2x" data-file-width="172" data-file-height="75" /></a></span></td></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Arduino_Uno_-_R3.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Uno_-_R3.jpg/220px-Arduino_Uno_-_R3.jpg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Uno_-_R3.jpg/330px-Arduino_Uno_-_R3.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Uno_-_R3.jpg/440px-Arduino_Uno_-_R3.jpg 2x" data-file-width="600" data-file-height="600" /></a></span><div class="infobox-caption"><a href="/wiki/Arduino_Uno" title="Arduino Uno">Arduino Uno</a> SMD R3</div></td></tr><tr><th scope="row" class="infobox-label">Manufacturer</th><td class="infobox-data">Arduino</td></tr><tr><th scope="row" class="infobox-label">Type</th><td class="infobox-data"><a href="/wiki/Single-board_microcontroller" title="Single-board microcontroller">Single-board microcontroller</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data">None (default) <br /> <a href="/wiki/Xinu" title="Xinu">Xinu</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Central_processing_unit" title="Central processing unit">CPU</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist">
<ul><li><a href="/wiki/Atmel_AVR" class="mw-redirect" title="Atmel AVR">Atmel AVR</a> (8-bit)</li>
<li><a href="/wiki/ARM_Cortex-M0%2B" class="mw-redirect" title="ARM Cortex-M0+">ARM Cortex-M0+</a> (32-bit)</li>
<li><a href="/wiki/ARM_Cortex-M3" class="mw-redirect" title="ARM Cortex-M3">ARM Cortex-M3</a> (32-bit)</li>
<li><a href="/wiki/Intel_Quark" title="Intel Quark">Intel Quark</a> (<a href="/wiki/X86" title="X86">x86</a>) (32-bit)</li></ul>
</div></td></tr><tr><th scope="row" class="infobox-label">Memory</th><td class="infobox-data"><a href="/wiki/Static_random-access_memory" title="Static random-access memory">SRAM</a></td></tr><tr><th scope="row" class="infobox-label">Storage</th><td class="infobox-data"><a href="/wiki/Flash_memory" title="Flash memory">Flash</a>, <a href="/wiki/EEPROM" title="EEPROM">EEPROM</a></td></tr><tr><th scope="row" class="infobox-label">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://www.arduino.cc/">arduino.cc</a></span></td></tr></tbody></table>
<p><br />
</p>
<ul class="gallery mw-gallery-packed">
<li class="gallerybox" style="width: 174.66666666667px">
<div class="thumb" style="width: 172.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Arduino316.jpg" class="mw-file-description" title="Arduino RS232[1] (male pins)"><img alt="Arduino RS232[1] (male pins)" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Arduino316.jpg/259px-Arduino316.jpg" decoding="async" width="173" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Arduino316.jpg/388px-Arduino316.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Arduino316.jpg/517px-Arduino316.jpg 2x" data-file-width="1293" data-file-height="900" /></a></span></div>
<div class="gallerytext">Arduino RS232<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><br />(male pins)</div>
</li>
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Diecimila_6.jpg" class="mw-file-description" title="Arduino Diecimila[2]"><img alt="Arduino Diecimila[2]" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/96/Arduino_Diecimila_6.jpg/240px-Arduino_Diecimila_6.jpg" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/96/Arduino_Diecimila_6.jpg/360px-Arduino_Diecimila_6.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/96/Arduino_Diecimila_6.jpg/480px-Arduino_Diecimila_6.jpg 2x" data-file-width="2816" data-file-height="2112" /></a></span></div>
<div class="gallerytext">Arduino Diecimila<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></div>
</li>
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Duemilanove_2009b.jpg" class="mw-file-description" title="Arduino Duemilanove[3] (rev 2009b)"><img alt="Arduino Duemilanove[3] (rev 2009b)" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Arduino_Duemilanove_2009b.jpg/240px-Arduino_Duemilanove_2009b.jpg" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Arduino_Duemilanove_2009b.jpg/360px-Arduino_Duemilanove_2009b.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/05/Arduino_Duemilanove_2009b.jpg/480px-Arduino_Duemilanove_2009b.jpg 2x" data-file-width="2272" data-file-height="1704" /></a></span></div>
<div class="gallerytext">Arduino Duemilanove<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><br />(rev 2009b)</div>
</li>
<li class="gallerybox" style="width: 182px">
<div class="thumb" style="width: 180px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_UNO_unpacked.jpg" class="mw-file-description" title="Arduino Uno R2[4][5]"><img alt="Arduino Uno R2[4][5]" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Arduino_UNO_unpacked.jpg/270px-Arduino_UNO_unpacked.jpg" decoding="async" width="180" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Arduino_UNO_unpacked.jpg/405px-Arduino_UNO_unpacked.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Arduino_UNO_unpacked.jpg/540px-Arduino_UNO_unpacked.jpg 2x" data-file-width="5184" data-file-height="3456" /></a></span></div>
<div class="gallerytext"><a href="/wiki/Arduino_Uno" title="Arduino Uno">Arduino Uno R2</a><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></div>
</li>
<li class="gallerybox" style="width: 122px">
<div class="thumb" style="width: 120px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Uno_-_R3.jpg" class="mw-file-description" title="Arduino Uno SMD R3[6]"><img alt="Arduino Uno SMD R3[6]" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Uno_-_R3.jpg/180px-Arduino_Uno_-_R3.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Uno_-_R3.jpg/270px-Arduino_Uno_-_R3.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Uno_-_R3.jpg/360px-Arduino_Uno_-_R3.jpg 2x" data-file-width="600" data-file-height="600" /></a></span></div>
<div class="gallerytext"><a href="/wiki/Arduino_Uno" title="Arduino Uno">Arduino Uno SMD R3</a><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></div>
</li>
<li class="gallerybox" style="width: 182px">
<div class="thumb" style="width: 180px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Leonardo.jpg" class="mw-file-description" title="Arduino Leonardo[7]"><img alt="Arduino Leonardo[7]" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Leonardo.jpg/270px-Arduino_Leonardo.jpg" decoding="async" width="180" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Leonardo.jpg/405px-Arduino_Leonardo.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/38/Arduino_Leonardo.jpg/540px-Arduino_Leonardo.jpg 2x" data-file-width="5184" data-file-height="3456" /></a></span></div>
<div class="gallerytext">Arduino Leonardo<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></div>
</li>
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:2x3_pin_header_on_Arduino_Micro.jpg" class="mw-file-description" title="Arduino Micro (ATmega32U4)"><img alt="Arduino Micro (ATmega32U4)" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/2x3_pin_header_on_Arduino_Micro.jpg/240px-2x3_pin_header_on_Arduino_Micro.jpg" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/2x3_pin_header_on_Arduino_Micro.jpg/360px-2x3_pin_header_on_Arduino_Micro.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c9/2x3_pin_header_on_Arduino_Micro.jpg/480px-2x3_pin_header_on_Arduino_Micro.jpg 2x" data-file-width="2048" data-file-height="1536" /></a></span></div>
<div class="gallerytext">Arduino Micro (ATmega32U4)</div>
</li>
<li class="gallerybox" style="width: 182px">
<div class="thumb" style="width: 180px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Pro_Micro.jpg" class="mw-file-description" title="Arduino Pro Micro (ATmega32U4)"><img alt="Arduino Pro Micro (ATmega32U4)" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Arduino_Pro_Micro.jpg/270px-Arduino_Pro_Micro.jpg" decoding="async" width="180" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Arduino_Pro_Micro.jpg/405px-Arduino_Pro_Micro.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/de/Arduino_Pro_Micro.jpg/540px-Arduino_Pro_Micro.jpg 2x" data-file-width="1644" data-file-height="1096" /></a></span></div>
<div class="gallerytext">Arduino Pro Micro (ATmega32U4)</div>
</li>
<li class="gallerybox" style="width: 122px">
<div class="thumb" style="width: 120px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Pro.jpg" class="mw-file-description" title="Arduino Pro[8] (No USB)"><img alt="Arduino Pro[8] (No USB)" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/af/Arduino_Pro.jpg/180px-Arduino_Pro.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/af/Arduino_Pro.jpg/270px-Arduino_Pro.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/af/Arduino_Pro.jpg/360px-Arduino_Pro.jpg 2x" data-file-width="1059" data-file-height="1059" /></a></span></div>
<div class="gallerytext">Arduino Pro<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><br />(No USB)</div>
</li>
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Mega.jpg" class="mw-file-description" title="Arduino Mega[9]"><img alt="Arduino Mega[9]" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/01/Arduino_Mega.jpg/240px-Arduino_Mega.jpg" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/01/Arduino_Mega.jpg/360px-Arduino_Mega.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/01/Arduino_Mega.jpg/480px-Arduino_Mega.jpg 2x" data-file-width="1597" data-file-height="1197" /></a></span></div>
<div class="gallerytext">Arduino Mega<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></div>
</li>
<li class="gallerybox" style="width: 62px">
<div class="thumb" style="width: 60px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Nano.jpg" class="mw-file-description" title="Arduino Nano[10] (DIP-30 footprint)"><img alt="Arduino Nano[10] (DIP-30 footprint)" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Arduino_Nano.jpg/77px-Arduino_Nano.jpg" decoding="async" width="52" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Arduino_Nano.jpg/115px-Arduino_Nano.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Arduino_Nano.jpg/154px-Arduino_Nano.jpg 2x" data-file-width="1283" data-file-height="3000" /></a></span></div>
<div class="gallerytext"><a href="/wiki/Arduino_Nano" title="Arduino Nano">Arduino Nano</a><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><br />(DIP-30 footprint)</div>
</li>
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:LilyPad_Arduino_Main_Board.JPG" class="mw-file-description" title="Arduino LilyPad 00[11] (rev 2007) (No USB)"><img alt="Arduino LilyPad 00[11] (rev 2007) (No USB)" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/LilyPad_Arduino_Main_Board.JPG/240px-LilyPad_Arduino_Main_Board.JPG" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/LilyPad_Arduino_Main_Board.JPG/360px-LilyPad_Arduino_Main_Board.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ec/LilyPad_Arduino_Main_Board.JPG/480px-LilyPad_Arduino_Main_Board.JPG 2x" data-file-width="2311" data-file-height="1734" /></a></span></div>
<div class="gallerytext">Arduino LilyPad 00<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><br />(rev 2007) (No USB)</div>
</li>
<li class="gallerybox" style="width: 122px">
<div class="thumb" style="width: 120px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Robot_Top.jpg" class="mw-file-description" title="Arduino Robot[12]"><img alt="Arduino Robot[12]" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Arduino_Robot_Top.jpg/180px-Arduino_Robot_Top.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Arduino_Robot_Top.jpg/270px-Arduino_Robot_Top.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/51/Arduino_Robot_Top.jpg/360px-Arduino_Robot_Top.jpg 2x" data-file-width="640" data-file-height="640" /></a></span></div>
<div class="gallerytext">Arduino Robot<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></div>
</li>
<li class="gallerybox" style="width: 270.66666666667px">
<div class="thumb" style="width: 268.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Esplora.jpg" class="mw-file-description" title="Arduino Esplora[13]"><img alt="Arduino Esplora[13]" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Arduino_Esplora.jpg/403px-Arduino_Esplora.jpg" decoding="async" width="269" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Arduino_Esplora.jpg/604px-Arduino_Esplora.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Arduino_Esplora.jpg/805px-Arduino_Esplora.jpg 2x" data-file-width="1024" data-file-height="458" /></a></span></div>
<div class="gallerytext">Arduino Esplora<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></div>
</li>
<li class="gallerybox" style="width: 182px">
<div class="thumb" style="width: 180px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Ethernet_Board.jpg" class="mw-file-description" title="Arduino Ethernet[14] (AVR + W5100)"><img alt="Arduino Ethernet[14] (AVR + W5100)" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/16/Arduino_Ethernet_Board.jpg/270px-Arduino_Ethernet_Board.jpg" decoding="async" width="180" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/16/Arduino_Ethernet_Board.jpg/405px-Arduino_Ethernet_Board.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/16/Arduino_Ethernet_Board.jpg/540px-Arduino_Ethernet_Board.jpg 2x" data-file-width="4332" data-file-height="2888" /></a></span></div>
<div class="gallerytext">Arduino Ethernet<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup><br />(AVR + W5100)</div>
</li>
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:ArduinoYun.jpg" class="mw-file-description" title="Arduino Yún[15] (AVR + AR9331)"><img alt="Arduino Yún[15] (AVR + AR9331)" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/ArduinoYun.jpg/240px-ArduinoYun.jpg" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/ArduinoYun.jpg/360px-ArduinoYun.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1d/ArduinoYun.jpg/480px-ArduinoYun.jpg 2x" data-file-width="600" data-file-height="450" /></a></span></div>
<div class="gallerytext">Arduino Yún<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><br />(AVR + AR9331)</div>
</li>
<li class="gallerybox" style="width: 227.33333333333px">
<div class="thumb" style="width: 225.33333333333px;"><span typeof="mw:File"><a href="/wiki/File:ArduinoDue_Front.jpg" class="mw-file-description" title="Arduino Due[16] (ARM Cortex-M3 core)"><img alt="Arduino Due[16] (ARM Cortex-M3 core)" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/36/ArduinoDue_Front.jpg/338px-ArduinoDue_Front.jpg" decoding="async" width="226" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/36/ArduinoDue_Front.jpg/507px-ArduinoDue_Front.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/36/ArduinoDue_Front.jpg/676px-ArduinoDue_Front.jpg 2x" data-file-width="1024" data-file-height="546" /></a></span></div>
<div class="gallerytext">Arduino Due<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup><br />(<a href="/wiki/ARM_Cortex-M3" class="mw-redirect" title="ARM Cortex-M3">ARM Cortex-M3</a> core)</div>
</li>
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:Arduino_Giga_R1_WiFi.png" class="mw-file-description" title="Arduino GIGA R1 WiFi (Dual core ARM Cortex-M7 + ARM Cortex-M4 cores + Murata 1DX)"><img alt="Arduino GIGA R1 WiFi (Dual core ARM Cortex-M7 + ARM Cortex-M4 cores + Murata 1DX)" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Arduino_Giga_R1_WiFi.png/240px-Arduino_Giga_R1_WiFi.png" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Arduino_Giga_R1_WiFi.png/360px-Arduino_Giga_R1_WiFi.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Arduino_Giga_R1_WiFi.png/480px-Arduino_Giga_R1_WiFi.png 2x" data-file-width="643" data-file-height="482" /></a></span></div>
<div class="gallerytext">Arduino GIGA R1 WiFi (Dual core <a href="/wiki/ARM_Cortex-M7" class="mw-redirect" title="ARM Cortex-M7">ARM Cortex-M7</a> + <a href="/wiki/ARM_Cortex-M4" class="mw-redirect" title="ARM Cortex-M4">ARM Cortex-M4</a> cores + Murata 1DX)</div>
</li>
</ul>
<div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="#Shields"><span class="tocnumber">1</span> <span class="toctext">Shields</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="#Software"><span class="tocnumber">2</span> <span class="toctext">Software</span></a>
<ul>
<li class="toclevel-2 tocsection-3"><a href="#Legacy_IDE"><span class="tocnumber">2.1</span> <span class="toctext">Legacy IDE</span></a></li>
<li class="toclevel-2 tocsection-4"><a href="#IDE_2.0"><span class="tocnumber">2.2</span> <span class="toctext">IDE 2.0</span></a></li>
<li class="toclevel-2 tocsection-5"><a href="#Sketch"><span class="tocnumber">2.3</span> <span class="toctext">Sketch</span></a></li>
<li class="toclevel-2 tocsection-6"><a href="#Libraries"><span class="tocnumber">2.4</span> <span class="toctext">Libraries</span></a></li>
<li class="toclevel-2 tocsection-7"><a href="#Operating_systems/threading"><span class="tocnumber">2.5</span> <span class="toctext">Operating systems/threading</span></a></li>
</ul>
</li>
<li class="toclevel-1 tocsection-8"><a href="#Applications"><span class="tocnumber">3</span> <span class="toctext">Applications</span></a></li>
<li class="toclevel-1 tocsection-9"><a href="#Simulation"><span class="tocnumber">4</span> <span class="toctext">Simulation</span></a></li>
<li class="toclevel-1 tocsection-10"><a href="#Recognitions"><span class="tocnumber">5</span> <span class="toctext">Recognitions</span></a></li>
<li class="toclevel-1 tocsection-11"><a href="#See_also"><span class="tocnumber">6</span> <span class="toctext">See also</span></a></li>
<li class="toclevel-1 tocsection-12"><a href="#Explanatory_notes"><span class="tocnumber">7</span> <span class="toctext">Explanatory notes</span></a></li>
<li class="toclevel-1 tocsection-13"><a href="#References"><span class="tocnumber">8</span> <span class="toctext">References</span></a></li>
<li class="toclevel-1 tocsection-14"><a href="#Further_reading"><span class="tocnumber">9</span> <span class="toctext">Further reading</span></a></li>
<li class="toclevel-1 tocsection-15"><a href="#External_links"><span class="tocnumber">10</span> <span class="toctext">External links</span></a></li>
</ul>
</div>
<div class="mw-heading mw-heading3"><h3 id="Shields">Shields</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=1" title="Edit section: Shields"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<p>Arduino and Arduino-compatible boards use printed circuit expansion boards called <i>shields</i>, which plug into the normally supplied Arduino pin headers.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> Shields can provide motor controls for <a href="/wiki/3D_printing" title="3D printing">3D printing</a> and other applications, <a href="/wiki/GNSS" class="mw-redirect" title="GNSS">GNSS</a> (satellite navigation), Ethernet, <a href="/wiki/Liquid_crystal_display" class="mw-redirect" title="Liquid crystal display">liquid crystal display</a> (LCD), or breadboarding (<a href="/wiki/Prototyping" class="mw-redirect" title="Prototyping">prototyping</a>). Several shields can also be made <a href="/wiki/Do_it_yourself" title="Do it yourself">do it yourself</a> (DIY).<sup id="cite_ref-AutoF7-35_18-0" class="reference"><a href="#cite_note-AutoF7-35-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-AutoF7-36_19-0" class="reference"><a href="#cite_note-AutoF7-36-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup>
</p>
<ul class="gallery mw-gallery-packed">
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:Multiple_shields_stacked_on_an_Arduino_board.jpg" class="mw-file-description" title="Some shields offer stacking headers which allow multiple shields to be stacked on top of an Arduino board. Here, a prototyping shield is stacked on two Adafruit motor shield V2s."><img alt="Some shields offer stacking headers which allow multiple shields to be stacked on top of an Arduino board. Here, a prototyping shield is stacked on two Adafruit motor shield V2s." src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Multiple_shields_stacked_on_an_Arduino_board.jpg/240px-Multiple_shields_stacked_on_an_Arduino_board.jpg" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Multiple_shields_stacked_on_an_Arduino_board.jpg/360px-Multiple_shields_stacked_on_an_Arduino_board.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Multiple_shields_stacked_on_an_Arduino_board.jpg/480px-Multiple_shields_stacked_on_an_Arduino_board.jpg 2x" data-file-width="3264" data-file-height="2448" /></a></span></div>
<div class="gallerytext">Some shields offer stacking headers which allow multiple shields to be stacked on top of an Arduino board. Here, a prototyping shield is stacked on two <a href="/wiki/Adafruit" class="mw-redirect" title="Adafruit">Adafruit</a> motor shield V2s.</div>
</li>
<li class="gallerybox" style="width: 182px">
<div class="thumb" style="width: 180px;"><span typeof="mw:File"><a href="/wiki/File:Wingshield_on_Arduino_-_ARSH-05-WI.jpg" class="mw-file-description" title="Screw-terminal breakout shield in a wing-type format, allowing bare-end wires to be connected to the board without requiring any specialized pins"><img alt="Screw-terminal breakout shield in a wing-type format, allowing bare-end wires to be connected to the board without requiring any specialized pins" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Wingshield_on_Arduino_-_ARSH-05-WI.jpg/270px-Wingshield_on_Arduino_-_ARSH-05-WI.jpg" decoding="async" width="180" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Wingshield_on_Arduino_-_ARSH-05-WI.jpg/405px-Wingshield_on_Arduino_-_ARSH-05-WI.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/72/Wingshield_on_Arduino_-_ARSH-05-WI.jpg/540px-Wingshield_on_Arduino_-_ARSH-05-WI.jpg 2x" data-file-width="3560" data-file-height="2373" /></a></span></div>
<div class="gallerytext">Screw-terminal breakout shield in a wing-type format, allowing bare-end wires to be connected to the board without requiring any specialized pins</div>
</li>
<li class="gallerybox" style="width: 182px">
<div class="thumb" style="width: 180px;"><span typeof="mw:File"><a href="/wiki/File:ARSH-09-DL_03.jpg" class="mw-file-description" title="Adafruit Datalogging Shield with a Secure Digital (SD) card slot and real-time clock (RTC) chip along with some space for adding components and modules for customization"><img alt="Adafruit Datalogging Shield with a Secure Digital (SD) card slot and real-time clock (RTC) chip along with some space for adding components and modules for customization" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/ARSH-09-DL_03.jpg/270px-ARSH-09-DL_03.jpg" decoding="async" width="180" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/ARSH-09-DL_03.jpg/405px-ARSH-09-DL_03.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/ARSH-09-DL_03.jpg/540px-ARSH-09-DL_03.jpg 2x" data-file-width="2994" data-file-height="1996" /></a></span></div>
<div class="gallerytext">Adafruit Datalogging Shield with a <a href="/wiki/Secure_Digital" class="mw-redirect" title="Secure Digital">Secure Digital</a> (SD) card slot and real-time clock (RTC) chip along with some space for adding components and modules for customization</div>
</li>
<li class="gallerybox" style="width: 182px">
<div class="thumb" style="width: 180px;"><span typeof="mw:File"><a href="/wiki/File:Adafruit_Motor_Shield_-_ARSH-02-MS_01.jpg" class="mw-file-description" title="Adafruit Motor Shield with screw terminals for connection to motors. Officially discontinued, this shield may still be available through unofficial channels."><img alt="Adafruit Motor Shield with screw terminals for connection to motors. Officially discontinued, this shield may still be available through unofficial channels." src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Adafruit_Motor_Shield_-_ARSH-02-MS_01.jpg/270px-Adafruit_Motor_Shield_-_ARSH-02-MS_01.jpg" decoding="async" width="180" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Adafruit_Motor_Shield_-_ARSH-02-MS_01.jpg/405px-Adafruit_Motor_Shield_-_ARSH-02-MS_01.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Adafruit_Motor_Shield_-_ARSH-02-MS_01.jpg/540px-Adafruit_Motor_Shield_-_ARSH-02-MS_01.jpg 2x" data-file-width="3057" data-file-height="2038" /></a></span></div>
<div class="gallerytext">Adafruit Motor Shield with screw terminals for connection to motors. Officially discontinued, this shield may still be available through unofficial channels.</div>
</li>
<li class="gallerybox" style="width: 92px">
<div class="thumb" style="width: 90px;"><span typeof="mw:File"><a href="/wiki/File:Front_of_the_motor_shield.jpg" class="mw-file-description" title="The Adafruit Motor Shield V2 uses I2C, requiring vastly fewer digital I/O pins than attaching each motor directly."><img alt="The Adafruit Motor Shield V2 uses I2C, requiring vastly fewer digital I/O pins than attaching each motor directly." src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Front_of_the_motor_shield.jpg/135px-Front_of_the_motor_shield.jpg" decoding="async" width="90" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Front_of_the_motor_shield.jpg/202px-Front_of_the_motor_shield.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Front_of_the_motor_shield.jpg/270px-Front_of_the_motor_shield.jpg 2x" data-file-width="2448" data-file-height="3264" /></a></span></div>
<div class="gallerytext">The Adafruit Motor Shield V2 uses <a href="/wiki/I%C2%B2C" title="I²C">I<sup>2</sup>C</a>, requiring vastly fewer digital I/O pins than attaching each motor directly.</div>
</li>
<li class="gallerybox" style="width: 162px">
<div class="thumb" style="width: 160px;"><span typeof="mw:File"><a href="/wiki/File:Closeup_of_usbhost_shield_with_jumper.JPG" class="mw-file-description" title="A USB host shield which allows an Arduino board to communicate with a USB device such as a keyboard or a mouse"><img alt="A USB host shield which allows an Arduino board to communicate with a USB device such as a keyboard or a mouse" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/17/Closeup_of_usbhost_shield_with_jumper.JPG/240px-Closeup_of_usbhost_shield_with_jumper.JPG" decoding="async" width="160" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/17/Closeup_of_usbhost_shield_with_jumper.JPG/360px-Closeup_of_usbhost_shield_with_jumper.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/17/Closeup_of_usbhost_shield_with_jumper.JPG/480px-Closeup_of_usbhost_shield_with_jumper.JPG 2x" data-file-width="4000" data-file-height="3000" /></a></span></div>
<div class="gallerytext">A USB host shield which allows an Arduino board to communicate with a USB device such as a keyboard or a mouse</div>
</li>
</ul>
<div class="mw-heading mw-heading2"><h2 id="Software">Software</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=2" title="Edit section: Software"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<p>A program for Arduino hardware may be written in any <a href="/wiki/Programming_language" title="Programming language">programming language</a> with compilers that produce binary machine code for the target processor. Atmel provides a development environment for their 8-bit <a href="/wiki/Atmel_AVR" class="mw-redirect" title="Atmel AVR">AVR</a> and 32-bit <a href="/wiki/ARM_Cortex-M" title="ARM Cortex-M">ARM Cortex-M</a> based microcontrollers: AVR Studio (older) and Atmel Studio (newer).<sup id="cite_ref-AutoF7-38_21-0" class="reference"><a href="#cite_note-AutoF7-38-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-AutoF7-39_22-0" class="reference"><a href="#cite_note-AutoF7-39-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-AutoF7-46_23-0" class="reference"><a href="#cite_note-AutoF7-46-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Legacy_IDE">Legacy IDE</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=3" title="Edit section: Legacy IDE"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237879389"><table class="infobox vevent"><caption class="infobox-title summary">Arduino Legacy IDE</caption><tbody><tr><td colspan="2" class="infobox-image logo"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Arduino_IDE_-_Blink.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Arduino_IDE_-_Blink.png/220px-Arduino_IDE_-_Blink.png" decoding="async" width="220" height="183" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Arduino_IDE_-_Blink.png/330px-Arduino_IDE_-_Blink.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Arduino_IDE_-_Blink.png/440px-Arduino_IDE_-_Blink.png 2x" data-file-width="1482" data-file-height="1234" /></a></span><div class="infobox-caption">Screenshot of Arduino Legacy IDE showing <i>Blink</i> program</div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Developer(s)</a></th><td class="infobox-data">Arduino Software</td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237879389"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">1.8.19
/ 21 December 2021<span class="noprint">; 2 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">2021-12-21</span>)</span><sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup></div></td></tr><tr style="display:none"><td colspan="2">
</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="/wiki/Java_(programming_language)" title="Java (programming language)">Java</a>, <a href="/wiki/C_(programming_language)" title="C (programming language)">C</a>, <a href="/wiki/C%2B%2B" title="C++">C++</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data"><a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a>, <a href="/wiki/MacOS" title="MacOS">macOS</a>, <a href="/wiki/Linux" title="Linux">Linux</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Computing_platform" title="Computing platform">Platform</a></th><td class="infobox-data"><a href="/wiki/IA-32" title="IA-32">IA-32</a>, <a href="/wiki/X86-64" title="X86-64">x86-64</a>, <a href="/wiki/ARM_architecture" class="mw-redirect" title="ARM architecture">ARM</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_categories#Categorization_approaches" title="Software categories">Type</a></th><td class="infobox-data"><a href="/wiki/Integrated_development_environment" title="Integrated development environment">Integrated development environment</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="/wiki/LGPL" class="mw-redirect" title="LGPL">LGPL</a> or <a href="/wiki/GPL" class="mw-redirect" title="GPL">GPL</a> license</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/software">www<wbr />.arduino<wbr />.cc<wbr />/en<wbr />/software</a></span></td></tr></tbody></table>
<p>The Arduino <a href="/wiki/Integrated_development_environment" title="Integrated development environment">integrated development environment</a> (IDE) is a <a href="/wiki/Cross-platform" class="mw-redirect" title="Cross-platform">cross-platform</a> application (for <a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a>, <a href="/wiki/MacOS" title="MacOS">macOS</a>, and <a href="/wiki/Linux" title="Linux">Linux</a>) that is based on <i><a href="/wiki/Processing_(programming_language)" class="mw-redirect" title="Processing (programming language)">Processing IDE</a></i> which is written in <a href="/wiki/Java_(programming_language)" title="Java (programming language)">Java</a>. It uses the <i><a href="/wiki/Wiring_(development_platform)" class="mw-redirect" title="Wiring (development platform)">Wiring</a></i> API as programming style and <a href="/wiki/Hardware_Abstraction_Layer" class="mw-redirect" title="Hardware Abstraction Layer">HAL</a>. It includes a code editor with features such as text cutting and pasting, searching and replacing text, automatic indenting, <a href="/wiki/Brace_matching" class="mw-redirect" title="Brace matching">brace matching</a>, and <a href="/wiki/Syntax_highlighting" title="Syntax highlighting">syntax highlighting</a>, and provides simple <i>one-click</i> mechanisms to compile and upload programs to an Arduino board. It also contains a message area, a text console, a toolbar with buttons for common functions and a hierarchy of operation menus. The source code for the IDE is released under the <a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GNU General Public License</a>, version 2.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup>
</p><p>The Arduino IDE supports the languages <a href="/wiki/C_(programming_language)" title="C (programming language)">C</a> and <a href="/wiki/C%2B%2B" title="C++">C++</a> using special rules of code structuring. The Arduino IDE supplies a <a href="/wiki/Software_library" class="mw-redirect" title="Software library">software library</a> from the <a href="/wiki/Wiring_(development_platform)" class="mw-redirect" title="Wiring (development platform)">Wiring</a> project, which provides many common input and output procedures. User-written code only requires two basic functions, for starting the sketch and the main program loop, that are compiled and linked with a program stub <i>main()</i> into an executable <a href="/wiki/Cyclic_executive" title="Cyclic executive">cyclic executive</a> program with the <a href="/wiki/GNU_toolchain" title="GNU toolchain">GNU toolchain</a>, also included with the IDE distribution. The Arduino IDE employs the program <i>avrdude</i> to convert the executable code into a text file in <a href="/wiki/Hexadecimal" title="Hexadecimal">hexadecimal</a> encoding that is loaded into the Arduino board by a loader program in the board's firmware. Traditionally, Arduino IDE was used to program Arduino's official boards based on Atmel AVR Microcontrollers, but over time, once the popularity of Arduino grew and the availability of open-source compilers existed, many more platforms from <a href="/wiki/PIC_microcontrollers" title="PIC microcontrollers">PIC</a>, <a href="/wiki/STM32" title="STM32">STM32</a>, <a href="/wiki/TI_MSP430" title="TI MSP430">TI MSP430</a>, <a href="/wiki/ESP32" title="ESP32">ESP32</a> can be coded using Arduino IDE.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="IDE_2.0">IDE 2.0</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=4" title="Edit section: IDE 2.0"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237879389"><table class="infobox vevent"><caption class="infobox-title summary">Arduino IDE</caption><tbody><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Developer(s)</a></th><td class="infobox-data">Arduino Software</td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237879389"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">2.3.2
/ 20 February 2024<span class="noprint">; 8 months ago</span><span style="display:none"> (<span class="bday dtstart published updated">2024-02-20</span>)</span><sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup></div></td></tr><tr style="display:none"><td colspan="2">
</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="/wiki/TypeScript" title="TypeScript">TypeScript</a>, <a href="/wiki/JavaScript" title="JavaScript">JavaScript</a>, <a href="/wiki/Go_(programming_language)" title="Go (programming language)">Go</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data"><a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a>, <a href="/wiki/MacOS" title="MacOS">macOS</a>, <a href="/wiki/Linux" title="Linux">Linux</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Computing_platform" title="Computing platform">Platform</a></th><td class="infobox-data"><a href="/wiki/X86-64" title="X86-64">x86-64</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_categories#Categorization_approaches" title="Software categories">Type</a></th><td class="infobox-data"><a href="/wiki/Integrated_development_environment" title="Integrated development environment">Integrated development environment</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="/wiki/GNU_Affero_General_Public_License" title="GNU Affero General Public License">GNU Affero General Public License</a> v3.0</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/software">www<wbr />.arduino<wbr />.cc<wbr />/en<wbr />/software</a></span></td></tr></tbody></table>
<p>An initial alpha preview of a new Arduino IDE was released on October 18, 2019, as the Arduino Pro IDE. The beta preview was released on March 1, 2021, renamed IDE 2.0. On September 14, 2022, the Arduino IDE 2.0 was officially released as stable.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup>
</p><p>The system still uses Arduino CLI (Command Line Interface), but improvements include a more professional development environment and autocompletion support.<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> The application frontend is based on the <a href="/wiki/Eclipse_Theia" title="Eclipse Theia">Eclipse Theia</a> Open Source IDE. Its main new features are:<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup>
</p>
<ul><li>Modern, fully featured development environment</li>
<li>New Board Manager</li>
<li>New Library Manager</li>
<li>Project Explorer</li>
<li>Basic Auto-Completion and syntax check</li>
<li>Serial Monitor with Graph Plotter</li>
<li>Dark Mode and DPI awareness</li>
<li>64-bit release</li>
<li>Debugging capability</li></ul>
<p>One important feature Arduino IDE 2.0 provides is the debugging feature.<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> It allows users to single-step, insert breakpoints or view memory. Debugging requires a target chip with <a href="/wiki/Debug_port" title="Debug port">debug port</a> and a debug probe. The official Arduino Zero board can be debugged out of the box. Other official Arduino SAMD21 boards require a separate SEGGER J-Link or Atmel-ICE.
</p><p>For a 3rd party board, debugging in Arduino IDE 2.0 is also possible as long as such board supports GDB, OPENOCD and has a debug probe. Community has contributed debugging for ATMega328P based Arduino <sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> or CH32 RiscV Boards,<sup id="cite_ref-33" class="reference"><a href="#cite_note-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> etc.
</p>
<div class="mw-heading mw-heading3"><h3 id="Sketch">Sketch</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=5" title="Edit section: Sketch"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<p>A <i>sketch</i> is a program written with the Arduino IDE.<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> Sketches are saved on the development computer as text files with the file extension <b>.ino</b>. Arduino Software (IDE) pre-1.0 saved sketches with the extension <b>.pde</b>.
</p><p>A minimal Arduino C/C++ program consists of only two functions:<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup>
</p>
<ul><li><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">setup()</code>: This function is called once when a sketch starts after power-up or reset. It is used to initialize variables, input and output pin modes, and other libraries needed in the sketch. It is analogous to the function <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">main()</code>.<sup id="cite_ref-36" class="reference"><a href="#cite_note-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup></li>
<li><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">loop()</code>: After <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">setup()</code> function exits (ends), the <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">loop()</code> function is executed repeatedly in the main program. It controls the board until the board is powered off or is reset. It is analogous to the function <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">while(1)</code>.<sup id="cite_ref-37" class="reference"><a href="#cite_note-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup></li></ul>
<dl><dt>Blink example</dt></dl>
<figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Power_and_Pin13_LED_on_Arduino_Compatible_Board.jpg" class="mw-file-description"><img alt="Power LED and Integrated LED on Arduino Compatible Board" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/27/Power_and_Pin13_LED_on_Arduino_Compatible_Board.jpg/220px-Power_and_Pin13_LED_on_Arduino_Compatible_Board.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/27/Power_and_Pin13_LED_on_Arduino_Compatible_Board.jpg/330px-Power_and_Pin13_LED_on_Arduino_Compatible_Board.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/27/Power_and_Pin13_LED_on_Arduino_Compatible_Board.jpg/440px-Power_and_Pin13_LED_on_Arduino_Compatible_Board.jpg 2x" data-file-width="1920" data-file-height="1079" /></a><figcaption>Power LED (red) and User LED (green) attached to pin 13 on an Arduino-compatible board</figcaption></figure>
<p>Most Arduino boards contain a <a href="/wiki/Light-emitting_diode" title="Light-emitting diode">light-emitting diode</a> (LED) and a current-limiting resistor connected between pin 13 and ground, which is a convenient feature for many tests and program functions.<sup id="cite_ref-Blink_Tutorial_38-0" class="reference"><a href="#cite_note-Blink_Tutorial-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> A typical program used by beginners, akin to <a href="/wiki/Hello,_World!" class="mw-redirect" title="Hello, World!">Hello, World!</a>, is "blink", which repeatedly blinks the on-board LED integrated into the Arduino board. This program uses the functions <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">pinMode()</code>, <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">digitalWrite()</code>, and <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">delay()</code>, which are provided by the internal libraries included in the IDE environment.<sup id="cite_ref-39" class="reference"><a href="#cite_note-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-40" class="reference"><a href="#cite_note-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-41" class="reference"><a href="#cite_note-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> This program is usually loaded into a new Arduino board by the manufacturer.
</p>
<div style="font-size:10pt;" class="mw-highlight mw-highlight-lang-arduino mw-content-ltr" dir="ltr"><pre><span></span><span class="kr">const</span><span class="w"> </span><span class="kr">int</span><span class="w"> </span><span class="n">LED_PIN</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">13</span><span class="p">;</span><span class="w"> </span><span class="c1">// Pin number attached to LED.</span>
<span class="kr">void</span><span class="w"> </span><span class="nb">setup</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="nf">pinMode</span><span class="p">(</span><span class="n">LED_PIN</span><span class="p">,</span><span class="w"> </span><span class="kr">OUTPUT</span><span class="p">);</span><span class="w"> </span><span class="c1">// Configure pin 13 to be a digital output.</span>
<span class="p">}</span>
<span class="kr">void</span><span class="w"> </span><span class="nb">loop</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="nf">digitalWrite</span><span class="p">(</span><span class="n">LED_PIN</span><span class="p">,</span><span class="w"> </span><span class="kr">HIGH</span><span class="p">);</span><span class="w"> </span><span class="c1">// Turn on the LED.</span>
<span class="w"> </span><span class="nf">delay</span><span class="p">(</span><span class="mi">1000</span><span class="p">);</span><span class="w"> </span><span class="c1">// Wait 1 second (1000 milliseconds).</span>
<span class="w"> </span><span class="nf">digitalWrite</span><span class="p">(</span><span class="n">LED_PIN</span><span class="p">,</span><span class="w"> </span><span class="kr">LOW</span><span class="p">);</span><span class="w"> </span><span class="c1">// Turn off the LED.</span>
<span class="w"> </span><span class="nf">delay</span><span class="p">(</span><span class="mi">1000</span><span class="p">);</span><span class="w"> </span><span class="c1">// Wait 1 second.</span>
<span class="p">}</span>
</pre></div>
<div class="mw-heading mw-heading3"><h3 id="Libraries">Libraries</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=6" title="Edit section: Libraries"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<p>The open-source nature of the Arduino project has facilitated the publication of many free software libraries that other developers use to augment their projects.
</p>
<div class="mw-heading mw-heading3"><h3 id="Operating_systems/threading"><span id="Operating_systems.2Fthreading"></span>Operating systems/threading</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=7" title="Edit section: Operating systems/threading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<p>There is a <a href="/wiki/Xinu" title="Xinu">Xinu</a> OS port for the ATmega328P (Arduino Uno and others with the same chip), which includes most of the basic features.<sup id="cite_ref-42" class="reference"><a href="#cite_note-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> The source code of this version is freely available.<sup id="cite_ref-43" class="reference"><a href="#cite_note-43"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup>
</p><p>There is also a threading tool, named Protothreads. Protothreads are described as "extremely lightweight stackless threads designed for severely memory constrained systems, such as small embedded systems or wireless sensor network nodes.<sup id="cite_ref-44" class="reference"><a href="#cite_note-44"><span class="cite-bracket">[</span>44<span class="cite-bracket">]</span></a></sup>
</p><p>There is a port of FreeRTOS for the Arduino.<sup id="cite_ref-45" class="reference"><a href="#cite_note-45"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup> This is available from the Arduino Library Manager. It is compatible with a number of boards, including the Uno.
</p>
<div class="mw-heading mw-heading2"><h2 id="Applications">Applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=8" title="Edit section: Applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<ul><li><a href="/wiki/Arduboy" title="Arduboy">Arduboy</a>, a <a href="/wiki/Handheld_game_console" title="Handheld game console">handheld game console</a> based on Arduino</li>
<li><a href="/wiki/Arduinome" title="Arduinome">Arduinome</a>, a <a href="/wiki/MIDI_controller" title="MIDI controller">MIDI controller</a> device that mimics the <a href="/wiki/Monome" title="Monome">Monome</a></li>
<li><a href="/wiki/Ardupilot" class="mw-redirect" title="Ardupilot">Ardupilot</a>, drone software and hardware</li>
<li><a href="/wiki/ArduSat" title="ArduSat">ArduSat</a>, a cubesat based on Arduino</li>
<li><a href="/wiki/C-STEM_Studio" class="mw-redirect" title="C-STEM Studio">C-STEM Studio</a>, a platform for hands-on integrated learning of computing, science, technology, engineering, and mathematics (C-STEM) with robotics</li>
<li>Data loggers for scientific research<sup id="cite_ref-46" class="reference"><a href="#cite_note-46"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-47" class="reference"><a href="#cite_note-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-48" class="reference"><a href="#cite_note-48"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-49" class="reference"><a href="#cite_note-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup></li>
<li><a href="/wiki/OBDuino" title="OBDuino">OBDuino</a>, a <a href="/wiki/Trip_computer" title="Trip computer">trip computer</a> that uses the <a href="/wiki/On-board_diagnostics" title="On-board diagnostics">on-board diagnostics</a> interface found in most modern cars</li>
<li><a href="/wiki/OpenEVSE" title="OpenEVSE">OpenEVSE</a> an open-source electric vehicle charger</li>
<li><a href="/wiki/XOD_(programming_language)" title="XOD (programming language)">XOD</a>, a visual programming language for Arduino</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Simulation">Simulation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=9" title="Edit section: Simulation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<ul><li><a href="/wiki/Tinkercad" title="Tinkercad">Tinkercad</a>, an analog and digital simulator supporting Arduino Simulation, which is commonly used to create 3D models</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Recognitions">Recognitions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=10" title="Edit section: Recognitions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<p>The Arduino project received an honorary mention in the Digital Communities category at the 2006 <a href="/wiki/Prix_Ars_Electronica" title="Prix Ars Electronica">Prix Ars Electronica</a>.<sup id="cite_ref-AutoF7-45_50-0" class="reference"><a href="#cite_note-AutoF7-45-50"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup>
</p><p>The Arduino Engineering Kit won the Bett Award for "Higher Education or Further Education Digital Services" in 2020.<sup id="cite_ref-51" class="reference"><a href="#cite_note-51"><span class="cite-bracket">[</span>51<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=11" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
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<ul><li><a href="/wiki/List_of_Arduino_boards_and_compatible_systems" title="List of Arduino boards and compatible systems">List of Arduino boards and compatible systems</a></li>
<li><a href="/wiki/List_of_open-source_hardware_projects" title="List of open-source hardware projects">List of open-source hardware projects</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Explanatory_notes">Explanatory notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=12" title="Edit section: Explanatory notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
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<div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=13" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardDiecimila">"Arduino - ArduinoBoardDiecimila"</a>. <i>www.arduino.cc</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.arduino.cc&rft.atitle=Arduino+-+ArduinoBoardDiecimila&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardDiecimila&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardDuemilanove">"Arduino - ArduinoBoardDuemilanove"</a>. <i>www.arduino.cc</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.arduino.cc&rft.atitle=Arduino+-+ArduinoBoardDuemilanove&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardDuemilanove&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardUno">"Arduino Uno Rev3"</a>. <i>www.arduino.cc</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.arduino.cc&rft.atitle=Arduino+Uno+Rev3&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardUno&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSmith" class="citation web cs1">Smith, W.A. <a rel="nofollow" class="external text" href="https://startingelectronics.org/articles/arduino/uno-r3-r2-differences/">"Differences Between the Arduino Uno Revision 2 and Revision 3"</a>. <i>startingelectronics.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=startingelectronics.org&rft.atitle=Differences+Between+the+Arduino+Uno+Revision+2+and+Revision+3&rft.aulast=Smith&rft.aufirst=W.A.&rft_id=https%3A%2F%2Fstartingelectronics.org%2Farticles%2Farduino%2Funo-r3-r2-differences%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardUnoSMD">"Arduino - ArduinoBoardUnoSMD"</a>. <i>www.arduino.cc</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.arduino.cc&rft.atitle=Arduino+-+ArduinoBoardUnoSMD&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardUnoSMD&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardLeonardo">"Arduino Leonardo with Headers"</a>. <i>www.arduino.cc</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.arduino.cc&rft.atitle=Arduino+Leonardo+with+Headers&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardLeonardo&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardPro">"Arduino Pro"</a>. <i>www.arduino.cc</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.arduino.cc&rft.atitle=Arduino+Pro&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardPro&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardMega2560">"Arduino Mega official webpage (arduino.cc)"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Arduino+Mega+official+webpage+%28arduino.cc%29&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardMega2560&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardNano">"Arduino Nano"</a>. <i>www.arduino.cc</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.arduino.cc&rft.atitle=Arduino+Nano&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardNano&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.arduino.cc/en/Main/ArduinoBoardLilyPad">"LilyPad Arduino Main Board"</a>. <i>www.arduino.cc</i><span class="reference-accessdate">. Retrieved <span class="nowrap">20 February</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.arduino.cc&rft.atitle=LilyPad+Arduino+Main+Board&rft_id=https%3A%2F%2Fwww.arduino.cc%2Fen%2FMain%2FArduinoBoardLilyPad&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-48"><span class="mw-cite-backlink"><b><a href="#cite_ref-48">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBardajiSánchezSimonWernand2016" class="citation journal cs1">Bardaji, Raul; Sánchez, Albert-Miquel; Simon, Carine; Wernand, Marcel R.; Piera, Jaume (2016-03-15). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4813948">"Estimating the Underwater Diffuse Attenuation Coefficient with a Low-Cost Instrument: The KdUINO DIY Buoy"</a>. <i>Sensors</i>. <b>16</b> (3): 373. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2016Senso..16..373B">2016Senso..16..373B</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.3390%2Fs16030373">10.3390/s16030373</a></span>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4813948">4813948</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/26999132">26999132</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Sensors&rft.atitle=Estimating+the+Underwater+Diffuse+Attenuation+Coefficient+with+a+Low-Cost+Instrument%3A+The+KdUINO+DIY+Buoy&rft.volume=16&rft.issue=3&rft.pages=373&rft.date=2016-03-15&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4813948%23id-name%3DPMC&rft_id=info%3Apmid%2F26999132&rft_id=info%3Adoi%2F10.3390%2Fs16030373&rft_id=info%3Abibcode%2F2016Senso..16..373B&rft.aulast=Bardaji&rft.aufirst=Raul&rft.au=S%C3%A1nchez%2C+Albert-Miquel&rft.au=Simon%2C+Carine&rft.au=Wernand%2C+Marcel+R.&rft.au=Piera%2C+Jaume&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4813948&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-49"><span class="mw-cite-backlink"><b><a href="#cite_ref-49">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLockridgeDzwonkowskiNelsonPowers2016" class="citation journal cs1">Lockridge, Grant; Dzwonkowski, Brian; Nelson, Reid; Powers, Sean (2016-04-13). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4851042">"Development of a Low-Cost Arduino-Based Sonde for Coastal Applications"</a>. <i>Sensors</i>. <b>16</b> (4): 528. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2016Senso..16..528L">2016Senso..16..528L</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.3390%2Fs16040528">10.3390/s16040528</a></span>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4851042">4851042</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/27089337">27089337</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Sensors&rft.atitle=Development+of+a+Low-Cost+Arduino-Based+Sonde+for+Coastal+Applications&rft.volume=16&rft.issue=4&rft.pages=528&rft.date=2016-04-13&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4851042%23id-name%3DPMC&rft_id=info%3Apmid%2F27089337&rft_id=info%3Adoi%2F10.3390%2Fs16040528&rft_id=info%3Abibcode%2F2016Senso..16..528L&rft.aulast=Lockridge&rft.aufirst=Grant&rft.au=Dzwonkowski%2C+Brian&rft.au=Nelson%2C+Reid&rft.au=Powers%2C+Sean&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4851042&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-AutoF7-45-50"><span class="mw-cite-backlink"><b><a href="#cite_ref-AutoF7-45_50-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20190630155735/http://archive.aec.at/prix/#8052">"Ars Electronica Archiv"</a>. Archived from <a rel="nofollow" class="external text" href="http://archive.aec.at/prix/#8052">the original</a> on 2019-06-30<span class="reference-accessdate">. Retrieved <span class="nowrap">2015-03-27</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Ars+Electronica+Archiv&rft_id=http%3A%2F%2Farchive.aec.at%2Fprix%2F%238052&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<li id="cite_note-51"><span class="mw-cite-backlink"><b><a href="#cite_ref-51">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://blog.arduino.cc/2020/01/20/arduino-education-nominated-in-bett-awards-2020/">"Arduino Education nominated for Bett Award"</a>. <i>Arduino Blog</i>. 2020-01-20<span class="reference-accessdate">. Retrieved <span class="nowrap">2020-07-01</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Arduino+Blog&rft.atitle=Arduino+Education+nominated+for+Bett+Award&rft.date=2020-01-20&rft_id=https%3A%2F%2Fblog.arduino.cc%2F2020%2F01%2F20%2Farduino-education-nominated-in-bett-awards-2020%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></span>
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<p><span class="error mw-ext-cite-error" lang="en" dir="ltr">Cite error: A <a href="/wiki/Help:Footnotes#WP:LDR" title="Help:Footnotes">list-defined reference</a> named "smartprojects" is not used in the content (see the <a href="/wiki/Help:Cite_errors/Cite_error_references_missing_key" title="Help:Cite errors/Cite error references missing key">help page</a>).</span><br />
<span class="error mw-ext-cite-error" lang="en" dir="ltr">Cite error: A <a href="/wiki/Help:Footnotes#WP:LDR" title="Help:Footnotes">list-defined reference</a> named "AutoF7-44" is not used in the content (see the <a href="/wiki/Help:Cite_errors/Cite_error_references_missing_key" title="Help:Cite errors/Cite error references missing key">help page</a>).</span><br />
</p>
<span class="error mw-ext-cite-error" lang="en" dir="ltr">Cite error: A <a href="/wiki/Help:Footnotes#WP:LDR" title="Help:Footnotes">list-defined reference</a> named "freeduino" is not used in the content (see the <a href="/wiki/Help:Cite_errors/Cite_error_references_missing_key" title="Help:Cite errors/Cite error references missing key">help page</a>).</span></div>
<div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=14" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
<ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBanziShiloh2022" class="citation book cs1">Banzi, Massimo; Shiloh, Michael (2022). <i>Make: Getting Started With Arduino: The Open Source Electronics Prototyping Platform</i> (4th ed.). Make Community. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1680456936" title="Special:BookSources/978-1680456936"><bdi>978-1680456936</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Make%3A+Getting+Started+With+Arduino%3A+The+Open+Source+Electronics+Prototyping+Platform&rft.edition=4th&rft.pub=Make+Community&rft.date=2022&rft.isbn=978-1680456936&rft.aulast=Banzi&rft.aufirst=Massimo&rft.au=Shiloh%2C+Michael&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li>
<li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBlum2019" class="citation book cs1">Blum, Jeremy (2019). <i>Exploring Arduino: Tools and Techniques for Engineering Wizardry</i> (2nd ed.). <a href="/wiki/Wiley_(publisher)" title="Wiley (publisher)">Wiley</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1119405375" title="Special:BookSources/978-1119405375"><bdi>978-1119405375</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Exploring+Arduino%3A+Tools+and+Techniques+for+Engineering+Wizardry&rft.edition=2nd&rft.pub=Wiley&rft.date=2019&rft.isbn=978-1119405375&rft.aulast=Blum&rft.aufirst=Jeremy&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li>
<li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBoxall2021" class="citation book cs1">Boxall, John (2021). <i>Arduino Workshop: A Hands-On Introduction with 65 Projects</i> (2nd ed.). <a href="/wiki/No_Starch_Press" title="No Starch Press">No Starch Press</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1718500587" title="Special:BookSources/978-1718500587"><bdi>978-1718500587</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Arduino+Workshop%3A+A+Hands-On+Introduction+with+65+Projects&rft.edition=2nd&rft.pub=No+Starch+Press&rft.date=2021&rft.isbn=978-1718500587&rft.aulast=Boxall&rft.aufirst=John&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li>
<li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKarvinenKarvinenValtokari2014" class="citation book cs1">Karvinen, Tero; Karvinen, Kimmo; Valtokari, Ville (2014). <i>Make: Sensors</i> (1st ed.). Make Community. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1449368104" title="Special:BookSources/978-1449368104"><bdi>978-1449368104</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Make%3A+Sensors&rft.edition=1st&rft.pub=Make+Community&rft.date=2014&rft.isbn=978-1449368104&rft.aulast=Karvinen&rft.aufirst=Tero&rft.au=Karvinen%2C+Kimmo&rft.au=Valtokari%2C+Ville&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li>
<li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMonk2018" class="citation book cs1">Monk, Simon (2018). <i>Programming Arduino Next Steps: Going Further with Sketches</i> (2nd ed.). <a href="/wiki/McGraw-Hill_Education" class="mw-redirect" title="McGraw-Hill Education">McGraw-Hill Education</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1260143249" title="Special:BookSources/978-1260143249"><bdi>978-1260143249</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Programming+Arduino+Next+Steps%3A+Going+Further+with+Sketches&rft.edition=2nd&rft.pub=McGraw-Hill+Education&rft.date=2018&rft.isbn=978-1260143249&rft.aulast=Monk&rft.aufirst=Simon&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li>
<li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMonk2022" class="citation book cs1">Monk, Simon (2022). <i>Programming Arduino: Getting Started with Sketches</i> (3rd ed.). McGraw-Hill Education. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1264676989" title="Special:BookSources/978-1264676989"><bdi>978-1264676989</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Programming+Arduino%3A+Getting+Started+with+Sketches&rft.edition=3rd&rft.pub=McGraw-Hill+Education&rft.date=2022&rft.isbn=978-1264676989&rft.aulast=Monk&rft.aufirst=Simon&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li>
<li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNussey2018" class="citation book cs1">Nussey, John (2018). <i>Arduino For Dummies</i> (2nd ed.). John Wiley & Sons. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1119489542" title="Special:BookSources/978-1119489542"><bdi>978-1119489542</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Arduino+For+Dummies&rft.edition=2nd&rft.pub=John+Wiley+%26+Sons&rft.date=2018&rft.isbn=978-1119489542&rft.aulast=Nussey&rft.aufirst=John&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li>
<li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPurdum2015" class="citation book cs1">Purdum, Jack (2015). <i>Beginning C for Arduino: Learn C Programming for the Arduino</i> (2nd ed.). <a href="/wiki/Apress" class="mw-redirect" title="Apress">Apress</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1484209417" title="Special:BookSources/978-1484209417"><bdi>978-1484209417</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Beginning+C+for+Arduino%3A+Learn+C+Programming+for+the+Arduino&rft.edition=2nd&rft.pub=Apress&rft.date=2015&rft.isbn=978-1484209417&rft.aulast=Purdum&rft.aufirst=Jack&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li>
<li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSchmidt2015" class="citation book cs1">Schmidt, Maik (2015). <i>Arduino: A Quick Start Guide</i> (2nd ed.). <a href="/wiki/Pragmatic_Bookshelf" class="mw-redirect" title="Pragmatic Bookshelf">Pragmatic Bookshelf</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1941222249" title="Special:BookSources/978-1941222249"><bdi>978-1941222249</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Arduino%3A+A+Quick+Start+Guide&rft.edition=2nd&rft.pub=Pragmatic+Bookshelf&rft.date=2015&rft.isbn=978-1941222249&rft.aulast=Schmidt&rft.aufirst=Maik&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArduino" class="Z3988"></span></li></ul>
<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arduino&action=edit&section=15" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div>
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<ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="https://www.arduino.cc">Official website</a></span></span></li>
<li><a rel="nofollow" class="external text" href="https://www.ted.com/talks/massimo_banzi_how_arduino_is_open_sourcing_imagination">How Arduino is open sourcing imagination</a>, a <a href="/wiki/TED_(conference)" title="TED (conference)">TED</a> talk by creator Massimo Banzi</li>
<li><a rel="nofollow" class="external text" href="http://i.imgur.com/yGRLPvL.jpg">Evolution tree for Arduino</a></li>
<li><a rel="nofollow" class="external text" href="http://robodino.org/resources/arduino">Arduino Cheat Sheet</a></li>
<li><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/johngineer/5484250200/sizes/o/in/photostream/">Arduino Dimensions and Hole Patterns</a></li>
<li><a rel="nofollow" class="external text" href="https://github.com/LNSD/Arduino-Shield-Template">Arduino Shield Template</a></li>
<li>Arduino Board Pinout Diagrams: <a rel="nofollow" class="external text" href="https://forum.arduino.cc/index.php?topic=132130.0">Due</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/8469564216/sizes/l/in/photostream/">Esplora</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/8466547410/sizes/l/in/photostream/">Leonardo</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/8451024820/sizes/l/in/photostream/">Mega</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/8471357492/sizes/l/in/photostream/">Micro</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/8453583648/sizes/l/in/photostream/">Mini</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/27704970094/sizes/l/in/photostream/">Pro Micro</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/8572012276/sizes/l/in/photostream/">Pro Mini</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/8449936925/sizes/l/in/photostream/">Uno</a>, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/28521811@N04/10339503016/sizes/l/in/photostream/">Yun</a></li></ul>
<dl><dt>Historical</dt></dl>
<ul><li>Arduino – The Documentary (2010): <a rel="nofollow" class="external text" href="https://www.imdb.com/title/tt1869268/">IMDb</a>, <a rel="nofollow" class="external text" href="https://vimeo.com/18539129">Vimeo</a></li>
<li>Massimo Banzi interviews: <a rel="nofollow" class="external text" href="https://twit.tv/shows/triangulation/episodes/110">Triangulation 110</a>, <a rel="nofollow" class="external text" href="https://twit.tv/shows/floss-weekly/episodes/61">FLOSS 61</a></li>
<li><a rel="nofollow" class="external text" href="https://arduinohistory.github.io/">Untold History of Arduino</a> – Hernando Barragán</li>
<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20170709234951/https://www.unitedstatescourts.org/federal/mad/167131/">Lawsuit documents from Arduino LLC vs. Arduino S.R.L. et al.</a> – United States Courts Archive</li></ul>
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<li><a href="/wiki/Nano_Pi" title="Nano Pi">Nano Pi</a></li>
<li><a href="/wiki/Nvidia_Jetson" title="Nvidia Jetson">Nvidia Jetson</a></li>
<li><a href="/wiki/ODROID" title="ODROID">ODROID</a></li>
<li><a href="/wiki/OLinuXino" title="OLinuXino">OLinuXino</a></li>
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<li><a href="/wiki/Adapteva#Parallella_project" class="mw-redirect" title="Adapteva">Parallella</a></li>
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<li><a href="/wiki/Snowball_(single-board_computer)" title="Snowball (single-board computer)">Snowball</a></li>
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<li><a href="/w/index.php?title=Vicharak&action=edit&redlink=1" class="new" title="Vicharak (page does not exist)">Vaaman</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/System_on_a_chip" title="System on a chip">SoCs</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ARM_architecture_family" title="ARM architecture family">ARM</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/Actions_Semiconductor" title="Actions Semiconductor">Actions</a></li>
<li><a href="/wiki/Allwinner_Technology#SoC_.28System_on_Chip.29" title="Allwinner Technology">Allwinner</a></li>
<li><a href="/wiki/Apple_silicon#A_series" title="Apple silicon">Ax</a></li>
<li><a href="/wiki/Apple_M1" title="Apple M1">Apple M1</a></li>
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<li><a href="/wiki/Nomadik" title="Nomadik">Nomadik</a></li>
<li><a href="/wiki/NovaThor" title="NovaThor">NovaThor</a></li>
<li><a href="/wiki/OMAP" title="OMAP">OMAP</a></li>
<li><a href="/wiki/Rockchip" title="Rockchip">Rockchip</a></li>
<li><a href="/wiki/Qualcomm_Snapdragon" title="Qualcomm Snapdragon">Qualcomm Snapdragon</a></li>
<li><a href="/wiki/Tegra" title="Tegra">Tegra</a></li>
<li><a href="/wiki/WonderMedia#Products" title="WonderMedia">WonderMedia</a></li></ul>
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<ul><li><a href="/wiki/AMD_%C3%89lan" title="AMD Élan">AMD Élan</a></li>
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<li><a href="/wiki/Jaguar_(microarchitecture)" title="Jaguar (microarchitecture)">Jaguar</a>-based</li>
<li><a href="/wiki/Puma_(microarchitecture)" title="Puma (microarchitecture)">Puma</a>-based</li>
<li><a href="/wiki/Intel_Quark" title="Intel Quark">Quark</a></li></ul>
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<ul><li><a href="/wiki/Apache_Hadoop" title="Apache Hadoop">Apache Hadoop</a></li>
<li><a href="/wiki/Linaro" title="Linaro">Linaro</a></li></ul>
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<li><a href="/wiki/ARC_(processor)" title="ARC (processor)">ARC</a></li>
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<li><a href="/wiki/AVR_microcontrollers" title="AVR microcontrollers">AVR</a></li>
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<li><a href="/wiki/TI_MSP430" title="TI MSP430">MPS430</a></li>
<li><a href="/wiki/PIC_microcontrollers" title="PIC microcontrollers">PIC</a></li>
<li><a href="/wiki/RISC-V" title="RISC-V">RISC-V</a></li>
<li><a href="/wiki/X86" title="X86">x86</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Word_(computer_architecture)" title="Word (computer architecture)">Word length</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/4-bit_computing" title="4-bit computing">4-bit</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/AMD_Am2900" title="AMD Am2900">Am2900</a></li>
<li><a href="/wiki/COP400" title="COP400">COP400</a></li>
<li>MARC4</li>
<li><a href="/wiki/Rockwell_PPS-4" title="Rockwell PPS-4">PPS-4</a></li>
<li><a href="/wiki/S1C6x" title="S1C6x">S1C6x</a></li>
<li><a href="/wiki/Toshiba_TLCS" title="Toshiba TLCS">TLCS-47</a></li>
<li><a href="/wiki/Texas_Instruments_TMS1000" title="Texas Instruments TMS1000">TMS1000</a></li>
<li><a href="/wiki/%CE%9CCOM-4" class="mw-redirect" title="ΜCOM-4">μCOM-4</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/8-bit_computing" title="8-bit computing">8-bit</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/Motorola_6800" title="Motorola 6800">6800</a>
<ul><li><a href="/wiki/Motorola_68HC05" title="Motorola 68HC05">68HC05</a></li>
<li><a href="/wiki/Motorola_68HC08" title="Motorola 68HC08">68HC08</a></li>
<li><a href="/wiki/Motorola_68HC11" title="Motorola 68HC11">68HC11</a></li>
<li><a href="/wiki/Freescale_S08" class="mw-redirect" title="Freescale S08">S08</a></li>
<li><a href="/wiki/Freescale_RS08" title="Freescale RS08">RS08</a></li></ul></li>
<li><a href="/wiki/MOS_Technology_6502" title="MOS Technology 6502">6502</a>
<ul><li><a href="/wiki/WDC_65C134" title="WDC 65C134">65C134</a></li>
<li><a href="/wiki/WDC_65C265" title="WDC 65C265">65C265</a></li>
<li><a href="/wiki/Mitsubishi_740" title="Mitsubishi 740">MELPS 740</a></li></ul></li>
<li><a href="/wiki/78K" title="78K">78K</a></li>
<li><a href="/wiki/Intel_MCS-48" title="Intel MCS-48">8048</a></li>
<li><a href="/wiki/Intel_8051" class="mw-redirect" title="Intel 8051">8051</a>
<ul><li><a href="/wiki/XC800_family" title="XC800 family">XC800</a></li></ul></li>
<li><a href="/wiki/AVR_microcontrollers" title="AVR microcontrollers">AVR</a></li>
<li><a href="/wiki/COP8" title="COP8">COP8</a></li>
<li><a href="/wiki/H8_Family" title="H8 Family">H8</a></li>
<li><a href="/wiki/PIC_microcontroller" class="mw-redirect" title="PIC microcontroller">PIC10/12/16/17/18</a></li>
<li><a href="/wiki/ST6_and_ST7" title="ST6 and ST7">ST6/ST7</a></li>
<li><a href="/wiki/STM8" title="STM8">STM8</a></li>
<li><a href="/wiki/Zilog_Z8" title="Zilog Z8">Z8</a></li>
<li><a href="/wiki/Zilog_Z80" title="Zilog Z80">Z80</a>
<ul><li><a href="/wiki/Zilog_eZ80" title="Zilog eZ80">eZ80</a></li>
<li><a href="/wiki/Rabbit_2000" title="Rabbit 2000">Rabbit 2000</a></li>
<li><a href="/wiki/Toshiba_TLCS" title="Toshiba TLCS">TLCS-870</a></li></ul></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/16-bit_computing" title="16-bit computing">16-bit</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/WDC_65C816" title="WDC 65C816">65C816</a></li>
<li><a href="/wiki/Freescale_68HC12" class="mw-redirect" title="Freescale 68HC12">68HC12</a>/<a href="/wiki/Freescale_68HC16" class="mw-redirect" title="Freescale 68HC16">16</a></li>
<li><a href="/wiki/Intel_80186" title="Intel 80186">80186</a></li>
<li><a href="/wiki/C166_family" title="C166 family">C166</a></li>
<li><a href="/wiki/CompactRISC" title="CompactRISC">CR16/C</a></li>
<li><a href="/wiki/H8_Family" title="H8 Family">H8S</a></li>
<li><a href="/wiki/TI_MSP430" title="TI MSP430">MSP430</a></li>
<li><a href="/wiki/PIC_microcontroller#PIC24_and_dsPIC" class="mw-redirect" title="PIC microcontroller">PIC24/dsPIC</a></li>
<li><a href="/wiki/R8C" title="R8C">R8C</a></li>
<li><a href="/wiki/RL78" title="RL78">RL78</a></li>
<li><a href="/wiki/Toshiba_TLCS" title="Toshiba TLCS">TLCS-900</a></li>
<li><a href="/wiki/Zilog_Z8000" title="Zilog Z8000">Z8000</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/32-bit_computing" title="32-bit computing">32-bit</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/AMD_Am29000" title="AMD Am29000">Am29000</a></li>
<li><a href="/wiki/ARC_(processor)" title="ARC (processor)">ARC</a></li>
<li><a href="/wiki/List_of_applications_of_ARM_cores" class="mw-redirect" title="List of applications of ARM cores">ARM</a> <a href="/wiki/ARM_Cortex-M" title="ARM Cortex-M">Cortex-M</a>
<ul><li><a href="/wiki/EFM32" title="EFM32">EFM32</a></li>
<li><a href="/wiki/NXP_LPC" title="NXP LPC">LPC</a></li>
<li><a href="/wiki/Atmel_ARM-based_processors" title="Atmel ARM-based processors">SAM</a></li>
<li><a href="/wiki/STM32" title="STM32">STM32</a></li>
<li><a href="/wiki/Infineon_XMC" title="Infineon XMC">XMC</a></li></ul></li>
<li><a href="/wiki/ARM_Cortex-R" title="ARM Cortex-R">ARM Cortex-R</a></li>
<li><a href="/wiki/AVR32" title="AVR32">AVR32</a></li>
<li><a href="/wiki/CompactRISC" title="CompactRISC">CRX</a></li>
<li><a href="/wiki/Fujitsu_FR" title="Fujitsu FR">FR</a>
<ul><li><a href="/wiki/FR-V_(microprocessor)" title="FR-V (microprocessor)">FR-V</a></li></ul></li>
<li><a href="/wiki/H8_Family" title="H8 Family">H8SX</a></li>
<li><a href="/wiki/M32R" title="M32R">M32R</a></li>
<li><a href="/wiki/MN103" title="MN103">MN103</a></li>
<li><a href="/wiki/Motorola_68000" title="Motorola 68000">68000</a>
<ul><li><a href="/wiki/NXP_ColdFire" title="NXP ColdFire">ColdFire</a></li></ul></li>
<li><a href="/wiki/PIC_microcontroller#PIC32MX" class="mw-redirect" title="PIC microcontroller">PIC32</a></li>
<li><a href="/wiki/PowerPC" title="PowerPC">PowerPC</a>
<ul><li><a href="/wiki/MPC5xx" title="MPC5xx">MPC5xx</a></li></ul></li>
<li><a href="/wiki/Parallax_Propeller" title="Parallax Propeller">Propeller</a></li>
<li><a href="/wiki/SuperH" title="SuperH">SuperH</a></li>
<li><a href="/wiki/Toshiba_TLCS" title="Toshiba TLCS">TLCS-900</a></li>
<li><a href="/wiki/Infineon_TriCore" title="Infineon TriCore">TriCore</a></li>
<li><a href="/wiki/V850" title="V850">V850</a></li>
<li><a href="/wiki/RX_microcontroller_family" class="mw-redirect" title="RX microcontroller family">RX</a></li>
<li><a href="/wiki/Tensilica" title="Tensilica">Xtensa</a></li>
<li><a href="/wiki/Zilog_Z80000" title="Zilog Z80000">Z80000</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/64-bit_computing" title="64-bit computing">64-bit</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/ARC_(processor)" title="ARC (processor)">ARC</a></li>
<li><a href="/wiki/ARM_Cortex-R" title="ARM Cortex-R">ARM Cortex-R</a></li>
<li><a href="/wiki/PowerPC#64-bit_PowerPC" title="PowerPC">PowerPC64</a></li></ul>
</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Interfaces</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Programming</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/In-system_programming" title="In-system programming">In-circuit serial programming</a> (ICSP)</li>
<li><a href="/wiki/In-system_programming" title="In-system programming">In-system programming</a> (ISP)</li>
<li><a href="/wiki/AVR_microcontrollers#PDI" title="AVR microcontrollers">Program and Debug Interface</a> (PDI)</li>
<li><a href="/wiki/AVR_microcontrollers#High_voltage_serial" title="AVR microcontrollers">High-voltage serial programming</a> (HVSP)</li>
<li><a href="/wiki/AVR_microcontrollers#High_voltage_parallel" title="AVR microcontrollers">High voltage parallel programming</a> (HVPP)</li>
<li><a href="/wiki/AVR_microcontrollers#Bootloader" title="AVR microcontrollers">Bootloader</a></li>
<li><a href="/wiki/AVR_microcontrollers#ROM" title="AVR microcontrollers">ROM</a></li>
<li><a href="/wiki/AVR_microcontrollers#aWire" title="AVR microcontrollers">aWire</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Debugging</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/Nexus_(standard)" title="Nexus (standard)">Nexus (standard)</a></li>
<li><a href="/wiki/JTAG" title="JTAG">Joint Test Action Group</a> (JTAG)
<ul><li><a href="/wiki/DebugWIRE" title="DebugWIRE">debugWIRE</a> (Atmel)</li></ul></li>
<li><a href="/wiki/PIC_microcontroller#In-circuit_debugging" class="mw-redirect" title="PIC microcontroller">In-circuit debugging</a> (ICD)</li>
<li><a href="/wiki/In-circuit_emulation" title="In-circuit emulation">In-circuit emulator</a> (ICE)</li>
<li><a href="/wiki/In-target_probe" title="In-target probe">In-target probe</a> (ITP)</li></ul>
</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lists</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/List_of_common_microcontrollers" title="List of common microcontrollers">List of common microcontrollers</a></li>
<li>By manufacturer
<ul><li><a href="/wiki/Intel_microprocessor#Microcontrollers" class="mw-redirect" title="Intel microprocessor">Intel</a></li>
<li><a href="/wiki/List_of_Freescale_products#Microcontrollers" class="mw-redirect" title="List of Freescale products">NXP/Freescale</a></li>
<li><a href="/wiki/List_of_common_microcontrollers#Infineon" title="List of common microcontrollers">Infineon</a></li>
<li><a href="/wiki/Renesas_Electronics#Products" title="Renesas Electronics">Renesas Electronics</a></li></ul></li>
<li><a href="/wiki/List_of_Wi-Fi_microcontrollers" title="List of Wi-Fi microcontrollers">List of Wi-Fi microcontrollers</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/Embedded_system" title="Embedded system">Embedded system</a></li>
<li><a href="/wiki/Programmable_logic_controller" title="Programmable logic controller">Programmable logic controller</a></li>
<li><a href="/wiki/List_of_microprocessors" title="List of microprocessors">List of microprocessors</a></li></ul>
</div></td></tr></tbody></table></div>
<div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Ambient_intelligence" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Ambient_intelligence" title="Template:Ambient intelligence"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Ambient_intelligence" title="Template talk:Ambient intelligence"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Ambient_intelligence" title="Special:EditPage/Template:Ambient intelligence"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Ambient_intelligence" style="font-size:114%;margin:0 4em"><a href="/wiki/Ambient_intelligence" title="Ambient intelligence">Ambient intelligence</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Concepts</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/Ambient_IoT" title="Ambient IoT">Ambient IoT</a></li>
<li><a href="/wiki/Context_awareness" title="Context awareness">Context awareness</a></li>
<li><a href="/wiki/Device_ecology" title="Device ecology">Device ecology</a></li>
<li><a href="/wiki/Extended_reality" title="Extended reality">Extended reality</a>
<ul><li><a href="/wiki/Spatial_computing" title="Spatial computing">Spatial computing</a></li></ul></li>
<li><a href="/wiki/Internet_of_things" title="Internet of things">Internet of things</a></li>
<li><a href="/wiki/Object_hyperlinking" title="Object hyperlinking">Object hyperlinking</a></li>
<li><a href="/wiki/Profiling_(information_science)" title="Profiling (information science)">Profiling</a></li>
<li><a href="/wiki/Spime" title="Spime">Spime</a></li>
<li><a href="/wiki/Supranet" title="Supranet">Supranet</a></li>
<li><a href="/wiki/Ubiquitous_computing" title="Ubiquitous computing">Ubiquitous computing</a></li>
<li><a href="/wiki/Web_of_Things" title="Web of Things">Web of Things</a></li>
<li><a href="/wiki/Wireless_sensor_network" title="Wireless sensor network">Wireless sensor networks</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technologies</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/6LoWPAN" title="6LoWPAN">6LoWPAN</a></li>
<li><a href="/wiki/ANT%2B" class="mw-redirect" title="ANT+">ANT+</a></li>
<li><a href="/wiki/DASH7" title="DASH7">DASH7</a></li>
<li><a href="/wiki/IEEE_802.15.4" title="IEEE 802.15.4">IEEE 802.15.4</a></li>
<li><a href="/wiki/Internet_0" title="Internet 0">Internet 0</a></li>
<li><a href="/wiki/Machine_to_machine" title="Machine to machine">Machine to machine</a></li>
<li><a href="/wiki/Radio-frequency_identification" title="Radio-frequency identification">Radio-frequency identification</a></li>
<li><a href="/wiki/Smartdust" title="Smartdust">Smartdust</a></li>
<li><a href="/wiki/XBee" title="XBee">XBee</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Platforms</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a class="mw-selflink selflink">Arduino</a></li>
<li><a href="/wiki/Contiki" title="Contiki">Contiki</a></li>
<li><a href="/wiki/.NET_Gadgeteer" title=".NET Gadgeteer">Gadgeteer</a></li>
<li><a href="/wiki/IoBridge" title="IoBridge">ioBridge</a></li>
<li><a href="/wiki/Netduino" title="Netduino">Netduino</a></li>
<li><a href="/wiki/Raspberry_Pi" title="Raspberry Pi">Raspberry Pi</a></li>
<li><a href="/wiki/TinyOS" title="TinyOS">TinyOS</a></li>
<li><a href="/wiki/Wiring_(development_platform)" class="mw-redirect" title="Wiring (development platform)">Wiring</a></li>
<li><a href="/wiki/Xively" title="Xively">Xively</a></li>
<li><a href="/wiki/NodeMCU" title="NodeMCU">NodeMCU</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Applications</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/Ambient_device" title="Ambient device">Ambient device</a></li>
<li><a href="/wiki/CeNSE" title="CeNSE">CeNSE</a></li>
<li><a href="/wiki/Connected_car" title="Connected car">Connected car</a></li>
<li><a href="/wiki/Home_automation" title="Home automation">Home automation</a></li>
<li><a href="/wiki/HomeOS" title="HomeOS">HomeOS</a></li>
<li><a href="/wiki/Internet_refrigerator" class="mw-redirect" title="Internet refrigerator">Internet refrigerator</a></li>
<li><a href="/wiki/Nabaztag" title="Nabaztag">Nabaztag</a></li>
<li><a href="/wiki/Smart_city" title="Smart city">Smart city</a></li>
<li><a href="/wiki/Smart_TV" title="Smart TV">Smart TV</a></li>
<li><a href="/wiki/Smarter_Planet" title="Smarter Planet">Smarter Planet</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Pioneers</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/Kevin_Ashton" title="Kevin Ashton">Kevin Ashton</a></li>
<li><a href="/wiki/Gaetano_Borriello" title="Gaetano Borriello">Gaetano Borriello</a></li>
<li><a href="/wiki/Adam_Dunkels" title="Adam Dunkels">Adam Dunkels</a></li>
<li><a href="/wiki/Stefano_Marzano" title="Stefano Marzano">Stefano Marzano</a></li>
<li><a href="/wiki/Don_Norman" title="Don Norman">Don Norman</a></li>
<li><a href="/wiki/Roel_Pieper" title="Roel Pieper">Roel Pieper</a></li>
<li><a href="/wiki/Josef_Preishuber-Pfl%C3%BCgl" title="Josef Preishuber-Pflügl">Josef Preishuber-Pflügl</a></li>
<li><a href="/wiki/John_Seely_Brown" title="John Seely Brown">John Seely Brown</a></li>
<li><a href="/wiki/Bruce_Sterling" title="Bruce Sterling">Bruce Sterling</a></li>
<li><a href="/wiki/Mark_Weiser" title="Mark Weiser">Mark Weiser</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="/wiki/Ambient_Devices" title="Ambient Devices">Ambient Devices</a></li>
<li><a href="/wiki/AmbieSense" title="AmbieSense">AmbieSense</a></li>
<li><a href="/wiki/Framework_Programmes_for_Research_and_Technological_Development" title="Framework Programmes for Research and Technological Development">Ebbits project</a></li>
<li><a href="/wiki/IPSO_Alliance" title="IPSO Alliance">IPSO Alliance</a></li></ul>
</div></td></tr></tbody></table></div>
<div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"><style data-mw-deduplicate="TemplateStyles:r1038841319">.mw-parser-output .tooltip-dotted{border-bottom:1px dotted;cursor:help}</style></div><div role="navigation" class="navbox authority-control" aria-labelledby="Authority_control_databases_frameless&#124;text-top&#124;10px&#124;alt=Edit_this_at_Wikidata&#124;link=https&#58;//www.wikidata.org/wiki/Q175957#identifiers&#124;class=noprint&#124;Edit_this_at_Wikidata" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Authority_control_databases_frameless&#124;text-top&#124;10px&#124;alt=Edit_this_at_Wikidata&#124;link=https&#58;//www.wikidata.org/wiki/Q175957#identifiers&#124;class=noprint&#124;Edit_this_at_Wikidata" style="font-size:114%;margin:0 4em"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q175957#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">International</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="http://id.worldcat.org/fast/1892754/">FAST</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">National</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://d-nb.info/gnd/7692236-4">Germany</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://id.loc.gov/authorities/sh2011005402">United States</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://catalogue.bnf.fr/ark:/12148/cb165329562">France</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://data.bnf.fr/ark:/12148/cb165329562">BnF data</a></span></li><li><span class="uid"><span class="rt-commentedText tooltip tooltip-dotted" title="Arduino"><a rel="nofollow" class="external text" href="https://aleph.nkp.cz/F/?func=find-c&local_base=aut&ccl_term=ica=ph809013&CON_LNG=ENG">Czech Republic</a></span></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="http://catalogo.bne.es/uhtbin/authoritybrowse.cgi?action=display&authority_id=XX5232439">Spain</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="http://olduli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request=987007574964805171">Israel</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Artists</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.moma.org/artists/46575">Museum of Modern Art</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.idref.fr/154841862">IdRef</a></span></li></ul></div></td></tr></tbody></table></div></div>' |
Whether or not the change was made through a Tor exit node (tor_exit_node) | false |
Unix timestamp of change (timestamp) | '1731197759' |
External links in the new text (new_links) | [
0 => 'https://www.arduino.cc/en/Main/ArduinoBoardSerial',
1 => 'https://www.arduino.cc/en/Main/ArduinoBoardDiecimila',
2 => 'https://www.arduino.cc/en/Main/ArduinoBoardDuemilanove',
3 => 'https://www.arduino.cc/en/Main/ArduinoBoardUno',
4 => 'https://startingelectronics.org/articles/arduino/uno-r3-r2-differences/',
5 => 'https://www.arduino.cc/en/Main/ArduinoBoardUnoSMD',
6 => 'https://www.arduino.cc/en/Main/ArduinoBoardLeonardo',
7 => 'https://www.arduino.cc/en/Main/ArduinoBoardPro',
8 => 'https://www.arduino.cc/en/Main/ArduinoBoardMega2560',
9 => 'https://www.arduino.cc/en/Main/ArduinoBoardNano',
10 => 'https://www.arduino.cc/en/Main/ArduinoBoardLilyPad',
11 => 'https://www.arduino.cc/en/Main/Robot',
12 => 'https://www.arduino.cc/en/Main/ArduinoBoardEsplora',
13 => 'https://www.arduino.cc/en/Main/ArduinoBoardEthernet',
14 => 'https://www.arduino.cc/en/Main/ArduinoBoardYun',
15 => 'https://www.arduino.cc/en/Main/ArduinoBoardDue',
16 => 'https://www.arduino.cc/en/Main/ArduinoShields',
17 => 'http://todbot.com/blog/2006/07/11/arduino-breadboard-shield/',
18 => 'https://web.archive.org/web/20170702144039/http://www.tigoe.net/pcomp/code/arduinowiring/26/',
19 => 'http://www.tigoe.net/pcomp/code/arduinowiring/26',
20 => 'http://shieldlist.org/',
21 => 'https://archive.today/20130128115914/http://www.megunolink.com/Building_an_Arduino_project_with_MegunoLink_and_Atmel_Studio_(Blink_Tutorial)',
22 => 'http://www.megunolink.com/Building_an_Arduino_project_with_MegunoLink_and_Atmel_Studio_(Blink_Tutorial)',
23 => 'https://web.archive.org/web/20120828135304/http://www.engblaze.com/tutorial-using-avr-studio-5-with-arduino-projects/',
24 => 'http://www.engblaze.com/tutorial-using-avr-studio-5-with-arduino-projects/',
25 => 'http://c-stem.ucdavis.edu/studio/charduino/',
26 => 'https://github.com/arduino/Arduino/releases/',
27 => 'https://github.com/arduino/Arduino',
28 => 'https://github.com/arduino/Arduino/wiki/Unofficial-list-of-3rd-party-boards-support-urls/',
29 => 'https://github.com/arduino/arduino-ide/releases/tag/2.3.2',
30 => 'https://blog.arduino.cc/2022/09/14/its-here-please-welcome-arduino-ide-2-0/',
31 => 'https://hackaday.com/2019/10/21/the-arduino-ide-finally-grows-up/',
32 => 'https://www.seeedstudio.com/blog/2019/10/21/introducing-new-arduino-pro-ide-with-advanced-features/',
33 => 'https://docs.arduino.cc/learn/microcontrollers/debugging/',
34 => 'https://github.com/DeqingSun/unoDebugTestPackage',
35 => 'https://github.com/openwch/arduino_core_ch32/commit/959844e9eba655169430bf6686b2ba055823d1cd',
36 => 'https://www.arduino.cc/en/Tutorial/BareMinimum',
37 => 'https://www.arduino.cc/reference/en/language/structure/sketch/setup/',
38 => 'https://www.arduino.cc/reference/en/language/structure/sketch/loop/',
39 => 'https://www.arduino.cc/en/Tutorial/Blink',
40 => 'https://www.arduino.cc/reference/en/language/functions/digital-io/pinmode/',
41 => 'https://www.arduino.cc/reference/en/language/functions/digital-io/digitalwrite/',
42 => 'https://www.arduino.cc/reference/en/language/functions/time/delay/',
43 => 'http://se.fi.uncoma.edu.ar/xinu-avr/',
44 => 'https://github.com/real-xinu/xinu-arduino',
45 => 'http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-4058',
46 => 'https://www.arduino.cc/reference/en/libraries/freertos/',
47 => 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5856100',
48 => 'https://ui.adsabs.harvard.edu/abs/2018Senso..18..530B',
49 => 'https://doi.org/10.3390%2Fs18020530',
50 => 'https://pubmed.ncbi.nlm.nih.gov/29425185',
51 => 'https://doi.org/10.1016%2Fj.buildenv.2016.02.010',
52 => 'https://ui.adsabs.harvard.edu/abs/2016BuEnv.100..114A',
53 => 'https://search.worldcat.org/issn/0360-1323',
54 => 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4813948',
55 => 'https://ui.adsabs.harvard.edu/abs/2016Senso..16..373B',
56 => 'https://doi.org/10.3390%2Fs16030373',
57 => 'https://pubmed.ncbi.nlm.nih.gov/26999132',
58 => 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4851042',
59 => 'https://ui.adsabs.harvard.edu/abs/2016Senso..16..528L',
60 => 'https://doi.org/10.3390%2Fs16040528',
61 => 'https://pubmed.ncbi.nlm.nih.gov/27089337',
62 => 'https://web.archive.org/web/20190630155735/http://archive.aec.at/prix/#8052',
63 => 'http://archive.aec.at/prix/#8052',
64 => 'https://blog.arduino.cc/2020/01/20/arduino-education-nominated-in-bett-awards-2020/',
65 => 'https://www.wikidata.org/wiki/Q175957#identifiers',
66 => 'https://www.arduino.cc/',
67 => 'https://www.arduino.cc/en/software',
68 => 'https://www.arduino.cc/',
69 => 'https://www.ted.com/talks/massimo_banzi_how_arduino_is_open_sourcing_imagination',
70 => 'http://i.imgur.com/yGRLPvL.jpg',
71 => 'http://robodino.org/resources/arduino',
72 => 'https://www.flickr.com/photos/johngineer/5484250200/sizes/o/in/photostream/',
73 => 'https://github.com/LNSD/Arduino-Shield-Template',
74 => 'https://forum.arduino.cc/index.php?topic=132130.0',
75 => 'https://www.flickr.com/photos/28521811@N04/8469564216/sizes/l/in/photostream/',
76 => 'https://www.flickr.com/photos/28521811@N04/8466547410/sizes/l/in/photostream/',
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81 => 'https://www.flickr.com/photos/28521811@N04/8572012276/sizes/l/in/photostream/',
82 => 'https://www.flickr.com/photos/28521811@N04/8449936925/sizes/l/in/photostream/',
83 => 'https://www.flickr.com/photos/28521811@N04/10339503016/sizes/l/in/photostream/',
84 => 'https://www.imdb.com/title/tt1869268/',
85 => 'http://vimeo.com/18539129',
86 => 'https://twit.tv/shows/triangulation/episodes/110',
87 => 'https://twit.tv/shows/floss-weekly/episodes/61',
88 => 'https://arduinohistory.github.io/',
89 => 'https://web.archive.org/web/20170709234951/https://www.unitedstatescourts.org/federal/mad/167131/',
90 => 'http://id.worldcat.org/fast/1892754/',
91 => 'https://d-nb.info/gnd/7692236-4',
92 => 'https://id.loc.gov/authorities/sh2011005402',
93 => 'https://catalogue.bnf.fr/ark:/12148/cb165329562',
94 => 'https://data.bnf.fr/ark:/12148/cb165329562',
95 => 'https://aleph.nkp.cz/F/?func=find-c&local_base=aut&ccl_term=ica=ph809013&CON_LNG=ENG',
96 => 'http://catalogo.bne.es/uhtbin/authoritybrowse.cgi?action=display&authority_id=XX5232439',
97 => 'http://olduli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request=987007574964805171',
98 => 'https://www.moma.org/artists/46575',
99 => 'https://www.idref.fr/154841862'
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