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 ...

Baguette S3 breadboard-friendly ESP32-S3 board takes only one row through its 30-pin GPIO header, also offers a microSD slot, ...