I have a large 48V motor that I'm planning to use for a primary drive wheel. I also wanted to mix 2 24V motors for flywheel control.
My thought was to get 2 24V batteries and connect the 24V batteries in parallel to power the smaller motors, and run one line in series to power the 48v motor.
My 48V motor controller has a 5V power rail that I can use to power the sensors and microprocessors to control the controllers.
Is there a problem mixing voltages like that as long as I keep them on distinctly separate circuits? Should I add optocouplers between the 48v->5v powered microcontroller and the 24v motor controller?
Am I explaining this well enough?