Quick video, just milling a mounting bracket for the motor shaft.  Rather than a grub screw, the d-shaft is sandwiched between two plates, and the whole thing screwed down to a 2x4 for testing.  A cheap EST and PWM servo tester later, and the patcher is moving on it's own volition!

The ESC is under-rated and insufficient.  Spec'ed at only 14v (4s lipo) the motor is too slow.  Overvolting to 20v speeds it up a bit closer to realistic RPM, but the ESC grows very hot.  In reality the motor would prefer 30-48v, so I need to get a larger ESC for actual usage.

The PWM generator is just a simple servo tester, and will eventually be embedded in a foot pedal.

I think that'll do it for the Patcher project, thanks for following along!  I'll post an update eventually when a nice base is constructed :)