I figured out how to send commands with midi buttons in mAirList, how to configure a fader or knob is a mystery to me though.
when i look in the midi configuration screen and enable capture i see my slider at address B8, Data1:0D, Data2:00 up to 7F
if i add this to the messages list i get B8, D, 7F CARTWALL 4 VOLUME xxx
and nothing happens, i’m sure i miss something as i don’t think i need to add every percentage between 00% and 100% for every slider.
mAirList will automatically react on all Data2 values greater than 0 and insert them as $DATA2 into the command.
This version of the VOLUME command with the “/127” is a somewhat magic thing - it will take the Data2 value and build a logarithmic volume scale from it, pretty much like on a physical mixer. The “127” defines where the 0dB point should be - in this case at the upper end of the fader ($7F = 127).
You might also use something like “/100” which will place the 0dB point a bit below the maximum fader position; this gives you a bit headroom to amplify the signal where necessary. Most professional mixers use that kind of scale. Have a look at the Lawo Sapphire for example, scale goes up to +9dB: