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Ok I spent yesterday building the power supply for my diode. I am using the lm317 chip installed in a chip housing. It can be found here DC Regulators LM317 LT117 MC34063 Step Up Down *USA - eBay (item 150405545131 end time Mar-15-10 19:24:27 PDT) I am using a 9 volt 500 milliamp power supply...

What are they and what do they do? I have a digital multimeter. Why would I need to test the ampage with an additional circuit board. Links are fine but please point to the correct page on them if it is a multi-page faq.

I thought it would be kinda cool to get an old analog walkman and hook up some mirrors to old walkman motors. Has anyone ever done something like this or used weird stuff like that to power the movement of the laser? Seems like some shower glass would also be cool.

I am skimming through various laser guides and it seems that it may be cost effective to purchase an ir laser and apply some sort of a dielectric interference bandpass filter. Are there rules about how these can be used. If I buy a laser that is 808 nm and use the bandpass filter on it...

Hello everyone, I have been stalking this board for like 2 months and finally registered. I am looking to mod my laser display system to include blueray violet. Right now I have a sik-99 projection unit in 150 mw green. I want to mod the housing to mix the green and the violet. Here is what I...