i just bought a 20mW 405nm 3.0V-3.7V /Laser Diode Module/Violet Laser and it has a pot screw on it if i turn it up will i be able to burn stuff with it? help please thank you.
No, you cant. The only thing you will achieve by turning the pot to max will be to burn your diode ! And thats something you dont want. Go buy a laser capable of more than 100mW,LAZERER is a very good laser copmany. And then you will be able to burn !