USB MIDI controller with a motorized fader
This is a home made USB MIDI controller with a motorized fader. It has only one physical fader, but it simulates 8 (virtual faders) with only one active at a time. Active fader is selected using the red buttons. In addition, there are 8 general purpose CC buttons with blue LEDs.
The host receives a different CC per virtual fader and per blue button. It can change the virtual fader placement and blue button light by sending the same CC back, with a different value.
The active virtual fader is attached to the physical fader and can move it, unless the handle is touched (capacitive sensor). A touch overrides the fader location given by the host.
Clicking an already selected red button will disable/enable all of the contoller LEDs.
A prototype:
The same prototype with a custom made PCB:
Partial assembly + 3D printed enclusure: