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    Laser lumia illuminated obelisk

    Recently I built a 10 meter tall laser illuminated obelisk for a AfrikaBurn, the South African regional Burning Man event. I got a lot of help and supplies from people on this and other forums, so I thought I should post my build experience. Here's the final product: I bought 10 A140 diodes...
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    Powering LM350 and 445nm off a 13.8v UPS

    I want to drive a number of LM350 and 445nm diodes off a UPS. The UPS will be powered by a two stroke generator. The LM350s are heatsinked and driven at around 1.2A. They'll be on continuously for 12 hours or so per day. I hope that the UPS battery will smooth out voltage spikes caused by the...
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    Advice on building 4 x 445nm continuous duty line generating lasers

    I'd like some advice on how to build 4 x 445nm continuous duty line generating lasers. They'll be initially used with a lumia wheel to light up the sides of a 33 foot tall obelisk at an art festival. After the festival they'll be re-housed in portable hosts and given to the funders of the...


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