I hope someone can help here. I have a DIY Laser engraver, I am at the point of hooking up the laser. It is a 500Mw blue laser with a controller board and fan. there are 2 connections, 1 is for the fan the other is the laser. There is a diode between the red and black wire coming from the laser boa…

how to connect a laser to the Arduino CNC Shield

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