I’m currently working on updating my R2D2 from a Sabertooth controller with brushed motors, to Q85 cycle motors and an odrive.
One of the things I did with the brushed motors was add a relay on one of the legs from the controller to the motor. This gave me not only the ability to disable the drives remotely, but also meant that if the power was removed (battery unplugged) then I could push the droid without fear of generating current and blowing the controller. I do want to use regen breaking rather than a breaking resistor.
So, the questions are:
- Can this be done with brushless and an odrive (breaking two of the three motor wires with a relay)
- Would it damage anything?
I’d be looking at putting two DPST automotive relays in place to do this. Probably just hardwired to the battery.