Arduino

<p align="center">
    <img src="http://content.arduino.cc/brand/arduino-color.svg" width="50%" />
</p>

**Important Notice**: This repository contains the legacy Arduino IDE 1.x, which is no longer in active development. For the latest features and updates, please visit the [Arduino IDE 2.x](https://github.com/arduino/arduino-ide) repository. If you encounter issues related to the newer IDE, please report them there.

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](https://www.arduino.cc/en/Main/Software).

![Github](https://img.shields.io/github/v/release/arduino/Arduino)

## More info at

- [Our website](https://www.arduino.cc/)
- [The forums](https://forum.arduino.cc/)
- Follow us on [Twitter](https://twitter.com/arduino)
- And like us at [Facebook](https://www.facebook.com/official.arduino)

## Bug reports and technical discussions

- To report a *bug* in the software or to request *a simple enhancement*, go to [Github Issues](https://github.com/arduino/Arduino/issues).
- More complex requests and technical discussions should go on the [Arduino Developers mailing list](https://groups.google.com/a/arduino.cc/forum/#!forum/developers).
- If you're interested in modifying or extending the Arduino software, we strongly suggest discussing your ideas on the [Developers mailing list](https://groups.google.com/a/arduino.cc/forum/#!forum/developers) *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.

### Security

If you think you found a vulnerability or other security-related bug in this project, please read our [security policy](https://github.com/arduino/Arduino/security/policy) and report the bug to our Security Team 🛡️. Thank you!

e-mail contact: security@arduino.cc

## Installation

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

- [Linux](https://www.arduino.cc/en/Guide/Linux) (see also the [Arduino playground](https://playground.arduino.cc/Learning/Linux))
- [macOS](https://www.arduino.cc/en/Guide/macOS)
- [Windows](https://www.arduino.cc/en/Guide/Windows)

## 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 repositori