EDIT: Whoops! Totally thought this category said “Hardware Conversations”, not “Hardware Conversions”. My bad!
Hey guys, I’m at a loss here with my DIY 40w laser cutter build. I’ve got GRBL 1.1 up and running on an Ardiuno UNO. LaserWeb3 controls everything great (including test-firing the laser), and if the laser is disconnected it’ll run the G-code that it creates for a part just fine. If you connect the laser, it’ll run for a variable amount of time before randomly entering an alarm state, losing communication via the COM port, or just freezing up. This happens with both LaserWeb3 sending the G-code and using the Universal Gcode sender, so it’s definitely something on the GRBL end of things. Has anyone run into this before? I’ve got experience with DIY 3D printers and lots of arduino experience, but this is something new & has got me stumped.
I’ve got the Arduino connected to the GND and IN connections of the laser PSU to give me PWM control over the laser, and I’ve got the “K-” terminal of the laser PSU tied to ground. I’ve uploaded an image that shows my PSU pinout.