Arduino Uno Pinout DiagramSince it first debuted, the Arduino Uno has been a huge hit with electronics enthusiasts from beginner hobbyists to professional programmers. The Uno is a single-board microcontroller and its open-source platform allows you to extend the environment by using libraries to share your developments with the vast, growing Arduino community.
Although other Arduino microcontroller boards are available, the Uno continues to be the standard for many projects. Arduino hardware and software are simple for developers of all levels to use, but when you're just getting started with the Uno, it's helpful to have a pinout diagram for reference.
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