![]() Too many parameters to try and test out to determine the underlying problem. GRBL Control Software/Firmware for Arduino Before you can use this CNC shield with Arduino, a control firmware need to be downloaded into Arduino board. I can’r seem to find if the issue is related to hardware, firmware, software or G-code. driver board if plug-in with wrong orientation. I have gone through a crazy amount of material with ruined designs as a result of this issue. I am seriously considering taking a hammer to this laser and ordering a different one if I can’t get it to work properly. ![]() Again this mod ended with the same result. Then I read another document that advised with these lasers there was another mod that could be done so off to the soldering iron once again and soldered a 10K resistor between the PWM wire from the laser to the bottom pin of the MOSFET. ![]() I completed this mod and still same result. ![]() I read where these lasers need a 1K resistor soldered between GND and PWM. The laser I have has a small, what I assume to be, a control board attached to the top of the unit with four screws. Yes, I have enabled laser mode $32=1 however nothing changed. ![]()
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