Strictly speaking, a Theremin uses a pair of antennae that act as capacitors in a specific R/C circuit. Looking at [aritrakdebnath2003]’s MIDI THEREMIN, we see it works differently, but it does play ...

You can now create large, dazzling LED matrix displays with your Raspberry Pi with the Adafruit Triple Matrix Bonnet for Raspberry Pi. This boards plugs into your Raspberry Pi with 2x20 header, and ...