Since we have the R4, I don´t need the R3 for Zynthian-purposes.
But I will use it to build a footswitch for all thinkable MIDI-Purposes:
PCh, CCh, Note on/off, SysEx, Start/stop Audio, Start/Stop Midi, etc.
I think 4-6 knobs are enough, because I will (if nessessary) change the knob-design from song to song. ok. it has to grow.
I made a new SD-card with buster with desktop and put it in the R4. But it does´t work!
Pic 4 shows the R3-Configuration. What am I doing wrong? Thanx for helping !