I'm totally lost. I have been searching about two days how to correctly wire Blue Laser LA03-5000 to RAMPS 1.4 board.
This laser has 12 V input and separates PWM/TTL wires. I have found out how to control laser with no PWM (just hook it to D9 same as a fan), but how do I correctly wire this type of laser? I really want to wire it correctly for safety reasons.