[attachment=752 Wrote:seandepagnier pid='12155' dateline='1580407641']How did you drive the shunt coil of the motor? To make it reverse, current must be the same direction through one coil but not the other... Did you use a bridge rectifier, or connect it to the clutch output (always energized) or?
The shuntcoil is driven through the clutch, always on when clutch is engaged. (Consumption is about 0,1 Amp/24V) Clutch is engaged by pin 11 on arduino with your motor.ino trough an ssr-relay. I just use three pins of the arduino, Pin11 for Clutch, Pin9-RC for the Pololu Motor driver and Pin-Gnd for comoun ground. I reverse the polarytiy amature for change of direction.
I enclose my scratch, sorry it is not verry profesional ....
greetings and save sailing
Andreas