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Arduino is an open-source physical computing platform based on a simple I/O board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing and MaxMSP). The boards can be assembled by hand or purchased preassembled; the open-source IDE can be downloaded for free at https://arduino.cc

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Bug reports and technical discussions

To report a bug in the software or to request a simple enhancement go to Github Issues
More complex requests and technical discussion should go on the Arduino Developers mailing list
If you're interested in modifying or extending the Arduino software, we strongly suggest discussing your ideas on the Developers mailing list before starting to work on them. That way you can coordinate with the Arduino Team and others, giving your work a higher chance of being integrated into the official release

Installation

Detailed instructions for installation in popular operating systems can be found at:

Contents of this repository

This repository contains just the code for the Arduino IDE itself. Originally, it also contained the AVR and SAM Arduino core and libraries (i.e. the code that is compiled as part of a sketch and runs on the actual Arduino device), but those have been moved into their own repositories. They are still automatically downloaded as part of the build process and included in built releases, though.

The repositories for these extra parts can be found here:

Non-core specific Libraries are listed under: https://github.com/arduino-libraries/ (and also a few other places, see build/build.xml).
The AVR core can be found at: https://github.com/arduino/ArduinoCore-avr
Other cores are not included by default but installed through the board manager. Their repositories can also be found under https://github.com/arduino/.

Building and testing

Instructions for building the IDE and running unit tests can be found on the wiki:

Credits

Arduino is an open source project, supported by many.

The Arduino team is composed of Massimo Banzi, David Cuartielles, Tom Igoe and David A. Mellis.

Arduino uses GNU avr-gcc toolchain, GCC ARM Embedded toolchain, avr-libc, avrdude, bossac, openOCD and code from Processing and Wiring.

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