It is my understanding, to get a 5v Laser working on the Archim board, we should edit the firmware to reassign the fan controls from the existing 12v fan pin to a pin that provides 5v so that we can use those gcodes to control the laser. It is suggested? on the project page to use pin 53.
Electrical engineering is not my strong suit. I have some questions concerning this.
Where is pin 53 on the Archim board? My Google-fu is not providing me the information that I am looking for. At a guess, I see a 5v pin in the PWR EXP section (see image blow), is this pin 53? (How could I find that kind of information in the future?)
Is there any other configuration needed? I read a few topics that mention Configuration_adv.h, but no concrete settings to change, or is it just the one line in the pins header?
The lasers have a two wires, TTL + and -. However “Pin 53” is singular. My novice assumption is that the + goes to Pin 53, but that would leave the - homeless. Assuming the image above is the correct location for Pin 53, would that make the next pin (GND) the location for the TTL -?
I do not have the tools or electrical engineering knowledge required to use trial and error, so I want to eliminate any unknowns or guesses. Does anyone have experience with the Archim board that could answer these questions?