On the electronics and interfacing side of things, [John] utilises the Arduino pro micro for its copious analog inputs and USB functionality. A nice feature of this board is that it’s based on ...

Instead, [jns] focused on reverse engineering the keyboard and trackball ... blowing up an Arduino Pro Micro, and even repairing the aging trackball. Success was had, and he’s graciously ...

Apart from understanding the Arduino's code language ... to a computer, the Micro not only appears as a COM port but is also detected as a generic mouse and keyboard. This functionality enables ...