[Frank Herrmann] had an interesting idea to turn a geared DC ... motor rotation and listen on the ‘stepper motor driver’ interface pins hooked up to the motion controller upstream. The Arduino ...

The Arduino code tells ... the mains used for the DC/DC converters is coming from. As the valves use 24V and the motor 12V, standard N-Mosfets and power relays are used for voltage conversion.

At last, some 'spare' time this weekend, and I learned two things about SCR dc motor control: Permanent magnet dc motors need ...