Maybe it wouldn’t be so boring if the input device was a nunchuck ... so that’s trivial to interface to an Arduino or other small microcontroller. The only issue is making the connection.

Simply by uploading new firmware with the Arduino Device Firmware Upgrade, it’s easy to have your old Arduino board gain some of the features of newer boards such as the Teensy or Leonardo.

Conversely, the Arduino is the ideal board for basic projects, as they're designed specifically for reading input values and ... need a tiny board for portable devices like smart wearables and ...