How did you remap the Marlin firmware for pin 44 for ttl 5v output
I’m having a hard time finding information to do it.
Not a step-by-step, but I think this covers all the major points to get you there.
Begin by using the proper firmware download from here:
Check out step 7-B in the PDF download here regarding what to change in which file to configure for the laser:
Then use this link for how to flash the firmware: