Robert had the great idea that, at least for now, we don’t have to solder our own control panel, but could start using a MIDI controller board. Brilliant! Today friend and collaborator Tomas Nordmark has very kindly borrowed me two FaderFox MIDI controllers! So stoked!
I’ve learned that MIDI is not only a matter of key’s (pitch & amplitude), but also works with Control Change messages. A full list of the MIDI codes can be found here. Tomas also showed me that you can find out the control codes using simple software such MidiOX.