@dc42 We are connecting it via the expansion slot pins. M569 P9 S1 R0 T4. The E6 pin: Pin 25 and Pin 2
There may have been a word/grammar miscommunication. When I said PWM above, I was referring to the STEP signal.
We are not using any fan or heater connectors on the board currently.
Perhaps it is the amplitude of the pulses that needs to be greater? Is there a way to do this? I may be wildly not correct for doing this, but the voltage output using a multi-meter always measures 0.6v from Pin 25 to 2 when an extruder move command is sent. ~0v during idle. On the cheap pulse generator device, the output is always 6.5v when in use. (I do not have an oscilloscope).
Screenshot_70.png
(PS: sorry for the 1 month delay, other project got in the way).