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    Which is "cooler?" Fan or heatsink?

    On all of my builds, I have used small fans that operate at 12v dc. Everyone else seems to use heatsinks. Why? Oh and check out my other post on my new build pls!
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    New Red Build! My 3rd Real Build!

    So I got a project box at radioshack and built an LM317 driver with a 25 ohm rheostat... got 6 switches... got a FREE DIODE from a local pc repair shop (ask nicely for an old/broken dvd rw drive), wired it up and... pew pew pew!!! First really good looking build and I hope you guys like it. The...
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    My DIY Blu Ray Laser Won't Work?

    It's on an LM317 driver circuit (see picture). Using a 1K ohm potentiometer. Etched on home made PCB. 405 nm Blu Ray diode from xbox sled bought on eBay. Just looks like a low dim when on... HELP!!! EDIT: No, it should be a burning laser... And did you say I should just get rid of the pot and...
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    Which wicked laser should I get?

    S3 elite sonar, S1 sonar lunar, or E1 executive pulsar? I like the s3 I think...


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