The keyboard, which he is calling z.48, is based around the Arduino Pro Micro running a firmware generated on kbfirmware.com, and features some absolutely fantastic hand-wiring.

A off-the-shelf MIDI keyboard acts as the input for the instrument. As you can hear in the video after the break; it’s not the worst sounding instrument in this age of digital music.

To make that actually work, Robofun paired an Arduino board with some capacitive controllers for the base, and connected that to a Raspberry Pi that linked the keyboard to the TV.

Technical Details and Components The keyboard was built using an Arduino board together with a fuel capacity of controllers, which is then connected to a Raspberry Pi mini computer.

A tuning mechanism consisting of 10 stepper motors and a further 10 servo motors for plucking the strings—combined with an arduino controller and some clever MaxMSP and Pure Data programming ...