I am trying to connect the wiring so the M3 or M4 will turn on the spindle. I have had the Maslow running flawlessly for over a month after working out some of the rf noise problems with USB signals. After getting that figured out, I attempted to work on the spindle on/off.
I have the v1.4b shield, for which I can’t find any documentation for Aux1-4. Every image/diagram I find is one which already has the labeled aux port through holes on the pcb. Mine has none, nor any markings. Through research, I’ve determined (assumed) that the arduino uses D17 for that signal.
I am running 1.26 of the software/firmware.
I have the Relay_High set for the spindle automation setting
When I check the voltage on pin 17 after the spindle is turned on, it floats about 600mV (same as before “spindle on” is issued). Originally I put an LED (with resistor) between pin 17 and ground hoping the led would light when the spindle was to be on. It never came on.
I have tried 2 different mega boards in case the was the problem. Both acted the same way.
I hope the solution is obvious to someone. If 17 isn’t the correct pin, please let me know. I also want to use D14 for the Z zero function, but that doesn’t work either. I’m assuming I did something silly because the wiring instructions are fairly clear, and I thought, easy to follow.
I’m resisting buying a new shield just to get the stenciled ports. I’ve attached the mega image with my pin 17 marked with a blue arrow so you can tell if I’ve assumed the incorrect pin.
Any suggestions appreciated!