Hi Guys!
I am new to the forum and laser engraving in general. I am "in my mind" 95% complete on a custom CO2 laser build.
Using a Chinese GRBL board, I have managed to configure setting, calibrate axis, align mirrors etc. The board does not have a 5V PWM output per se, the port is advertised as a "Servo" port, but measuring the V output when running a test cut (with laser PSU deactivated!!) the PWM pin puts out 4.8V when power in Lightburn is set to 100%, 2.4V on 50% power and so on, so I am making an assumption that this should work?
I have managed to test fire and run the laser with a pot and switch, with water protect hot wired. MY NERVES!!!! I will attach the current wiring as reference.
I would like to install a flow switch, door switch and additional safety/E-Stop switch on the front panel that can be slammed at any moment. I am a bit lost when it comes to the wiring though, and would prefer not to resort to trial and error on this one. I am hoping that someone here can offer some advice.
Please let me know if more information is needed. I will also attach an image of how I think this should be wired.
Thanks!