I created a "one chip" #opensource #hardware #modular #diysynth TrebleSynth (https://www.github.com/profdc9/TrebleSynth) based on the #raspberrypi pico. Create subtractive and FM #synth instruments with 6 voice polyphony by connecting modules (VCO,ADSR,LFO,VCA,etc.) and #analog controls. Supports #MIDI #USB and #serial with built-in keyboard, expression pedals, many effects such as reverb/delay/flanger/chorus included. Cheap, commodity hardware and easy #diy through-hole assembly.

https://www.youtube.com/watch?v=252Vte4tYh0