This is a simple Python script that converts a MIDI file into an Arduino sketch that plays the MIDI file on a Piezo buzzer. This was made originally for a school project, but I decided to make it ...

All switches are connected at one end to a pull-up input, and connect to ground on close. The analog input for the food pedal expects a potentiometer (e.g. 10k). Note that the MIDI output is used.

Strictly speaking, a Theremin uses a pair of antennae that act as capacitors in a specific R/C circuit. Looking at ...