Sun Jan 22, 2023 11:11 am
Regardless of whether your pots are rotary or slider they need to be linear for MIDI/Hauptwerk (not logarithmic which are used in amplifiers etc. as volume controllers).
Ideally the linkages to your expression pedals should be such that the pots operate over more or less their full range, so that from ‘swell box closed’ to ‘swell box open’ you get from 0 volts to approximately 5 volts going to your MIDI encoder which will then generate MIDI messages from 0 to approximately 127.
However, you might get away with only using 30% of the sweep. You’ll have to “suck it and see”.
To the best of my (somewhat limited) knowledge, it is your MIDI encoder (not Hauptwerk) that governs the number of steps from ‘box closed’ to ‘box open’.
When I programmed an Arduino Nano, and also an Arduino Pro-micro for use as a pedal board plus swell pedal encoder, I initially found that I was getting 127 single steps!! By changing one number in a line of code I was able to reduce this to a manageable number of steps.
Perhaps you could have your MIDI encoder re-programmed?
Graham