If I were to add a PWM controlled laser with this laser driver unit and control it from the Xcontroller, would the ground from PWM output join the 12v power from transformer, or do you skip the ground from xcontroller and just run the PWM signal cable. I have left safety switches etc. out of the wiring diagram for clarity of relevant circuitry as per picture.
The software setup with grbl and Vcarve will be sorted later, I’m curious as to the provision of only one ground input and whether the PWM signal needs ground from the Xcontroller.
Please don’t advise Jtech solution, it’s never in stock in the UK with RoboSavvy, and shipping from US adds some 30% plus with taxes and handling.