I'd like to use a sustain pedal (simple closing contact) to effectively singe left click an old mouse by wiring them together and to detect when the pedal is depressed. I can get this to work in KM but what I cannot figure out is how to stop the Mac seeing the pedal depression as a mouse click. So, is there a way of stopping the Mac reacting in its default way to this "special" mouse?
I think @tjluoma has a pedal, might be able to chime in with his/her expertise
I do, but mine is a Bluetooth pedal designed for this use, so I'm afraid I'm not sure how to help here.