An interesting and inspiring video showing the history of the prophet-synths. Some of them uses CEM (curtis electro music) chips just like my planned polyphonic synth build.
I have been busy lately soldering a MIDI BLE & CV interface dedicated to the touch keyboard. I figured the size factor is great for prototyping / troubleshooting my modular synth stuff. Ill upload code later. I also did prototyping for the actual keyboard