We’ve all found ourselves swimming amongst too many similar-looking USB cables over ... built around the Arduino Mega 2560, which is ideal for providing a huge amount of GPIO pins that are ...

Wouldn’t it be nice if there was a simple plug-and-play way to add a few bits of GPIO to your desktop or ... and the dongle is powered over the USB cable. [Nick] also built a Python library ...

While the pinout is very similar to the Arduino Nano’s ... held to attach the board as a USB drive to a computer – and a programmable button linked to GPIO pin 20.” ...