Zynthian Build
Zynthian is a nifty raspberry-pi powered open-source synth. Go to https://zynthian.org/ for more info.
I ordered the breakout board + 4 rotary encoders from them, the rest I sourced myself. The case is designed in Fusion360 and printed with my Ender3 pro. I still have some work to do on the back panel and the kickstand. I also have to connect the 4 buttons. It’s not ready for gigging yet.