Hello, I'm new to the forum. I'm looking to build a USB MIDI pedal controller. My keyboard rig is comprised of two USB MIDI controllers. The main one have a jack for an expression pedal, but the other doesn't. I use them on Apple MainStage and the pedal controls the overall volume, but I want to add a second pedal to control them separately. One for the left hand, and one for the right.
There is several products on the web, one more expensive than others, but I'm sure I can do it with Arduino for much less money. Besides, I could even add more functionality if I need to.
The device I'm talking about is this one: MIDI Expression
Is there a similar project already done, or can you point me in the right direction to do something like this?
Thank you very much for your help.