With your breadboard connected to the Arduino and the power supply plugged into an outlet, plug the Arduino back into the computer with the USB cable. Next, run the Processing code we compiled ...

Most people already write code in another editor. Many use an external build system like PlatformIO. Eclipse already has a plug in for Arduino that supports debugging with the right hardware.

The Code Kit is an Arduino system in a box. It comes with a small rechargeable battery that can power an Arduino-based CodeBit with three inputs and three outputs.