Hello friends. I am Rolf and I would like to share my latest DIY project "Jeannie" with you. It is an 8 voices polyphonic synthesizer based on a Teensy 4.1 board. I started doing it last summer. Now I have built an effects circuit for the synthesizer. "Jeannie" DIY Synthesizer Effect circuit Video The Fx menu in the synth is almost ready. The new one is still missing Display of the parameter values after a program change. There are more videos on