digplanet beta 1: Athena
Share digplanet:


Applied sciences






















For other uses, see Arduino (disambiguation).
Arduino Logo.svg
Arduino Uno - R3.jpg
"Arduino Uno" Revision 3
Type Single-board microcontroller
Website www.arduino.cc

Arduino is a single-board microcontroller, intended to make building interactive objects or environments more accessible.[1] The hardware consists of an open-source hardware board designed around an 8-bit Atmel AVR microcontroller, or a 32-bit Atmel ARM. Current models feature a USB interface, 6 analog input pins, as well as 14 digital I/O pins that accommodate various extension boards.

Introduced in 2005, the Aquino' designers sought to provide an inexpensive and easy way for hobbyists, students, and professionals to create devices that interact with their environment using sensors and actuators. Common examples for beginner hobbyists include simple robots, thermostats and motion detectors. It comes with a simple integrated development environment (IDE) that runs on regular personal computers and allows users to write programs for Arduino using C or C++.

The current prices of Arduino boards run around €20, or $27 and those of related "clones" as low as $9. Arduino boards can be purchased pre-assembled or as do-it-yourself kits. Hardware design information is available for those who would like to assemble an Arduino by hand. It was estimated in mid-2011 that over 300,000 official Arduinos had been commercially produced,[2] and in 2013 that 700,000 official boards were in users' hands.[3]


Arduino started in 2005 as a project for students at the Interaction Design Institute Ivrea in Ivrea, Italy. At that time program students used a "BASIC Stamp" at a cost of $100, considered expensive for students. Massimo Banzi, one of the founders, taught at Ivrea.[4] The name "Arduino" comes from a bar in Ivrea, where some of the founders of the project used to meet. The bar itself was named after Arduino, Margrave of Ivrea and King of Italy from 1002 to 1014.[5]

A hardware thesis was contributed for a wiring design by Colombian student Hernando Barragan. After the Wiring[6] platform was complete, researchers worked to make it lighter, less expensive, and available to the open source community. The school eventually closed down, so these researchers, one of them David Cuartielles, promoted the idea.[4]

The current prices run around $30 and related "clones" as low as $9.[4][7] A simple Arduino Mini Pro[8] clone may be had from China for less than $4, post paid.[9]


An official Arduino Uno with descriptions of the I/O locations
An early Arduino board[10] with an RS-232 serial interface (upper left) and an Atmel ATmega8 microcontroller chip (black, lower right); the 14 digital I/O pins are located at the top and the six analog input pins at the lower right.

An Arduino board consists of an Atmel 8-bit AVR microcontroller with complementary components that facilitate programming and incorporation into other circuits. An important aspect of the Arduino is its standard connectors, which lets users connect the CPU board to a variety of interchangeable add-on modules known as shields. Some shields communicate with the Arduino board directly over various pins, but many shields are individually addressable via an I²C serial bus—so many shields can be stacked and used in parallel. Official Arduinos have used the megaAVR series of chips, specifically the ATmega8, ATmega168, ATmega328, ATmega1280, and ATmega2560. A handful of other processors have been used by Arduino compatibles. Most boards include a 5 volt linear regulator and a 16 MHz crystal oscillator (or ceramic resonator in some variants), although some designs such as the LilyPad run at 8 MHz and dispense with the onboard voltage regulator due to specific form-factor restrictions. An Arduino's microcontroller is also pre-programmed with a boot loader that simplifies uploading of programs to the on-chip flash memory, compared with other devices that typically need an external programmer. This makes using an Arduino more straightforward by allowing the use of an ordinary computer as the programmer.

At a conceptual level, when using the Arduino software stack, all boards are programmed over an RS-232 serial connection, but the way this is implemented varies by hardware version. Serial Arduino boards contain a level shifter circuit to convert between RS-232-level and TTL-level signals. Current Arduino boards are programmed via USB, implemented using USB-to-serial adapter chips such as the FTDI FT232. Some 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 ISP programming is used.)

The Arduino board exposes most of the microcontroller's I/O pins for use by other circuits. The Diecimila, Duemilanove, and current Uno provide 14 digital I/O pins, six of which can produce pulse-width modulated signals, and six analog inputs. These pins are on the top of the board, via female 0.10-inch (2.5 mm) headers. Several plug-in application shields are also commercially available. The Arduino Nano, and Arduino-compatible Bare Bones Board and Boarduino boards may provide male header pins on the underside of the board that can plug into solderless breadboards.

There are many Arduino-compatible and Arduino-derived boards. 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 to simplify the construction of buggies and small robots. Others are electrically equivalent but change the form factor—sometimes retaining compatibility with shields, sometimes not. Some variants use completely different processors, with varying levels of compatibility.

Official boards[edit]

The original Arduino hardware is manufactured by the Italian company Smart Projects.[11] Some Arduino-branded boards have been designed by the American company SparkFun Electronics.[12] Sixteen versions of the Arduino hardware have been commercially produced to date.


Arduino and Arduino-compatible boards use shields—printed circuit expansion boards that plug into the normally supplied Arduino pin-headers. Shields can provide motor controls, GPS, ethernet, LCD, or breadboarding (prototyping). A number of shields can also be made DIY.[13][14][15]


Arduino Software IDE
Arduino 1.0 IDE, Ubuntu 11.10.png
A screenshot of the Arduino IDE showing the "Blink" program, a simple beginner program
Developer(s) Arduino Software
Stable release 1.0.6 / September 16, 2013 (2013-09-16)[16]
Preview release 1.5.6-r2 Beta / February 21, 2014 (2014-02-21)
Written in Java, C and C++
Operating system Cross-platform
Type Integrated development environment
License LGPL or GPL license
Website arduino.cc

The Arduino integrated development environment (IDE) is a cross-platform application written in Java, and derives from the IDE for the Processing programming language and the Wiring projects. It is designed to introduce programming to artists and other newcomers unfamiliar with software development. It includes a code editor with features such as syntax highlighting, brace matching, and automatic indentation, and is also capable of compiling and uploading programs to the board with a single click. A program or code written for Arduino is called a sketch.[17]

Arduino programs are written in C or C++. The Arduino IDE comes with a software library called "Wiring" from the original Wiring project, which makes many common input/output operations much easier. Users only need define two functions to make a runnable cyclic executive program:

  • setup(): a function run once at the start of a program that can initialize settings
  • loop(): a function called repeatedly until the board powers off

A typical first program for a microcontroller simply blinks an LED on and off. In the Arduino environment, the user might write a program like this:[18]

The integrated pin 13 LED
#define LED_PIN 13
void setup () {
  pinMode (LED_PIN, OUTPUT); // Enable pin 13 for digital output
void loop () {
  digitalWrite (LED_PIN, HIGH); // Turn on the LED
  delay (1000); // Wait one second (1000 milliseconds)
  digitalWrite (LED_PIN, LOW); // Turn off the LED
  delay (1000); // Wait one second

It is a feature of most Arduino boards that they have an LED and load resistor connected between pin 13 and ground; a convenient feature for many simple tests.[18] The previous code would not be seen by a standard C++ compiler as a valid program, so when the user clicks the "Upload to I/O board" button in the IDE, a copy of the code is written to a temporary file with an extra include header at the top and a very simple main() function at the bottom, to make it a valid C++ program.

The Arduino IDE uses the GNU toolchain and AVR Libc to compile programs, and uses avrdude to upload programs to the board.

As the Arduino platform uses Atmel microcontrollers, Atmel's development environment, AVR Studio or the newer Atmel Studio, may also be used to develop software for the Arduino.[19][20]


Arduino is open source hardware: the Arduino hardware reference designs are distributed under a Creative Commons Attribution Share-Alike 2.5 license and are available on the Arduino Web site. Layout and production files for some versions of the Arduino hardware are also available. The source code for the IDE is available and released under the GNU General Public License, version 2.[21]

Although the hardware and software designs are freely available under copyleft licenses, the developers have requested that the name "Arduino" be exclusive to the official product and not be used for derivative 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.[22] Several Arduino-compatible products commercially released have avoided the "Arduino" name by using "-duino" name variants.[23]



The Arduino project received an honorary mention in the Digital Communities category at the 2006 Prix Ars Electronica.[27][28]

See also[edit]


  1. ^ "Official slogan". Arduino Project. Retrieved 2013-12-31. 
  2. ^ "How many Arduinos are "in the wild?" About 300,000". Adafruit Industries. May 15, 2011. Retrieved 2013-05-26. 
  3. ^ "Arduino FAQ – With David Cuartielles". Malmö University. April 5, 2013. Retrieved 2014-03-24. 
  4. ^ a b c David Kushner (26 Oct 2011). "The Making of Arduino". IEEE Spectrum. 
  5. ^ Justin Lahart (27 November 2009). "Taking an Open-Source Approach to Hardware". The Wall Street Journal. Retrieved 7 September 2014. 
  6. ^ "Rhizome - Interview with Casey Reas and Ben Fry". 2009-09-23. Retrieved 2014-08-23. 
  7. ^ "Assembling the Really Bare Bones Board (RBBB) Arduino clone". 16 Aug 2008. 
  8. ^ "Arduino Pro Mini". 
  9. ^ "eBay posting for a very cheap ArduinoPro Mini clone - there are many similar ones". March 2014. 
  10. ^ "Hardware Index". Arduino Project. Retrieved 2013-12-10. 
  11. ^ Smart Projects
  12. ^ Schmidt, M. ["Arduino: A Quick Start Guide"], Pragmatic Bookshelf, January 22, 2011, Pg. 201
  13. ^ "Arduino breadboard shield: US$10 & 10 mins". todbot.com
  14. ^ Igoe, Tom (April 4, 2006). "Arduino Shields for Prototyping". tigoe.net
  15. ^ Jonathan Oxer. "Arduino Shield list". Retrieved 5 Nov 2013. 
  16. ^ "Arduino Software Release Notes". Arduino Project. Retrieved May 31, 2013. 
  17. ^ "Programming Arduino Getting Started with Sketches". McGraw-Hill. Nov 8, 2011. Retrieved 2013-03-28. 
  18. ^ "Using Atmel Studio for Arduino development". Megunolink.com. Retrieved 2013-01-18. 
  19. ^ "Using AVR Studio for Arduino development". Engblaze.com. Retrieved 2013-01-18. 
  20. ^ "The arduino source code". The arduino source code. 
  21. ^ "Policy". Arduino.cc. Retrieved 2013-01-18. 
  22. ^ "Freeduino Open Designs". Freeduino.org. Retrieved 2008-03-03. 
  23. ^ "xoscillo – A software oscilloscope that acquires data using an arduino or a parallax (more platforms to come). – Google Project Hosting". Code.google.com. Retrieved 2013-01-18. 
  24. ^ Pearce, Joshua M. 2012. "Building Research Equipment with Free, Open-Source Hardware". Science 337 (6100): 1303–1304. (open access)
  25. ^ ArduinoPhone. Instructables.com (2013-07-17). Retrieved on 2013-08-04.
  26. ^ "Prix Ars Electronica 2006 – Digital Communities – ANERKENNUNGEN – listing" (in German). Retrieved 2009-02-18. 
  27. ^ "Prix Ars Electronica 2006 – Digital Communities – ANERKENNUNGEN – description" (in German). Retrieved 2009-02-18. 

Further reading[edit]

  • Arduino For Dummies; John Nussey; 446 pages; 2013; ISBN 978-1118446379.
  • Programming Arduino Next Steps: Going Further with Sketches; Simon Monk; 2013; ISBN 978-0071830256.
  • Exploring Arduino: Tools and Techniques for Engineering Wizardry; Jeremy Blum; 384 pages; 2013; ISBN 978-1118549360.
  • Arduino Workshop: A Hands-On Introduction with 65 Projects; John Boxall; 392 pages; 2013; ISBN 978-1593274481.
  • Beginning C for Arduino: Learn C Programming for the Arduino and Compatible Microcontrollers; Jack Purdum; 280 pages; 2012; ISBN 978-1430247760.
  • Programming Arduino: Getting Started With Sketches; Monk Simon; 162 pages; 2011; ISBN 978-0071784221.
  • Make: Electronics (Learning by Discovery); Charles Platt; 352 pages; 2009; ISBN 978-0596153748.

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Arduino — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
1000000 videos foundNext > 

Tutorial 01 for Arduino: Getting Acquainted with Arduino

New Episodes each Monday! You can download the parts list and the code from this episode on my website: http://jeremyblum.com/2011/01/02/arduino-tutorial-ser...

Tested In-Depth: Getting Started with Arduino

Read our practical starter guide to the most popular Arduino kits here: http://www.tested.com/tech/robots/456466-know-your-arduino-guide-most-common-boards/ ...

Everything You Need To Know About Arduino

Ben teaches you everything you need to know to start using Arduino microcontrollers in your projects **New Episodes Every Other Monday!** Ask Ben Questions i...

#7: Comparing the Arduino and Raspberry Pi

Web: http://addohms.com/ep7 Twitter: @addohms On the surface both the Arduino and Raspberry Pi look like the same thing: inexpensive controller boards for el...

Use Arduino to Switch Power On and Off!

Mike picked up a $10 SainSmart 8 Channel DC 5V Relay Module, hooked it up to an Arduino micro controller (a Raspberry Pi should work, too!) and the next thin...

Massimo Banzi: How Arduino is open-sourcing imagination

http://www.ted.com Massimo Banzi helped invent the Arduino, a tiny, easy-to-use open-source microcontroller that's inspired thousands of people around the wo...

Arduino Stepper: Ultimate Accuracy!

I've always loved automation equipment. A grade school trip to a museum with a marble machine using pneumatics, sensors, servos and more had me hooked. Combi...

Introduction to Arduino

Go from blinking an LED to virtual prototyping in seven hours and still have time to eat lunch! This class is for anyone who has never played around with Arduino before and those who have played...

Internet of Farming: Arduino-based, backyard aquaponics

Rik Kretzinger grew up on a Christmas tree farm and spent his college years studying horticulture, but he found it too difficult to make a living as a small ...

An Introduction to the Arduino

If you have a friend or relative who has been asking "what's an Arduino?" You can point them here. They'll get an overview of what it is and what's possible ...

1000000 videos foundNext > 

6315 news items

TechCrunch (blog)

TechCrunch (blog)
Fri, 26 Sep 2014 12:15:12 -0700

Today in devices that use stepper motors to make beautiful music we present to you this Arduino-powered, Raspberry-Pi containing music box that uses simple stepper motors to grind out merry tunes and a pair of servos to supply a percussion backup.
Fri, 26 Sep 2014 08:56:15 -0700

If you like decorating your house for the holidays, these digital LEDs save the trouble of manual teardowns by using Arduino to modify animation effects each season. Instructables user CarlS powered through a big Arduino project with digital LEDs.

Technabob (blog)

Technabob (blog)
Mon, 29 Sep 2014 12:52:30 -0700

Earlier this year, we saw Kevin Bates' Arduboy, a business card-sized gaming device powered by an ATmega328P Arduino board. He's going to launch that device this December, but in the meantime he's working on another Tetris-playing trinket, the ...


Wed, 10 Sep 2014 13:06:16 -0700

Perhaps the most surprising thing about Edison is just how much smaller it is than its contemporaries. It's not surprising that the older Arduino Uno is both relatively large and underpowered compared to its rivals; the Uno as we know it began shipping ...
Tech Times
Sun, 31 Aug 2014 05:29:25 -0700

If you've been wanting to get started with an Arduino microcontroller board, it can be nauseating to navigate through the hundreds (if not thousands) of projects in order to figure out how to get your feet wet. When it was released in 2005, the Arduino ...


Tue, 09 Sep 2014 03:41:15 -0700

Each Beat Blox box has an Arduino that mimics a different instrument: one plays the bongos, another plays the bass (Holmquist tapped the standard Music Instrument Shield for those), and the third plays the snare drum, which Holmquist specially ...


Tue, 23 Sep 2014 09:13:08 -0700

Arduino Wi-Fi Shield 101 One for those of the Arduino persuasion… Welcome the Arduino Wi-Fi Shield 101 and its support for secure Wi-Fi connectivity, designed for the prototyping of Internet of Things (IoT) applications based on the Arduino platform.
Lifehacker Australia
Sat, 27 Sep 2014 20:22:30 -0700

Arduino is best known for its micro-controller of the same name and we've covered countless projects featuring the little electronic wonder over the years. With the 3D printing industry making massive inroads in the do-it-yourself market, it's not that ...

Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!