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that’s not what I meant What I meant is like for example some builds I’ve seen doesn’t add a heat sink for example 100mw build didn’t have a heat sink And other build he added a heat sink

How to determine the right driver for my diode Which specification should I look for Like if my diode is 150mw working voltage is 5-5.5v and current is I<140ma So I should look for a driver that gives 5v output and can give the same amount of current and that’s it? Or should look for something...

I have safety glasses , can u help me with the other parts ?

Hello I’m trying to build a laser pointer using Osram PLTB450B Blue 450nm 1.6W Can anyone help me find the rest of the parts needed from aliexpress Especially a driver that could match the laser diode Thanks