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Greetings! After successfully coupling an audio signal onto my green laser pointer, I decided I want more (particularly more range), so I got a broken spirograph from my friend and it turned out the laser was still intact. Unfortunately, that was to change as my circuit seemed to have...

Greetings, laser enthusiasts! My name is Dennis, I'm 20 years old, live in Germany and study physics. Recently, my interest in electronics was revived and just yesterday, my attention shifted to lasers. I understand the theory behind them, but I don't have any experience handling them. I am...