I'm not sure if this possible but I would like to have crossfader send an output to two different buttons depending on position.
If the xfader is all the way to the left then the leftmost button would light up to indicate the fader is on the left deck.
...and vice versa.
I do the know the output works for the buttons because if I add an output for the xfader to both buttons they left both light up regardless of position.
Comments
In theory you could add two different MIDI mappings, and invert the output of one of them, but it may light both when it is away from the edge.