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  1. C

    Need help with current and resistance

    Hello, Recently I bought this laser kit on Ebay: 300mW+ 650nm Red High Power burn Laser Diode Module Kit - eBay (item 280393602910 end time Sep-11-09 21:27:47 PDT) It came well shipped, all parts were in the package. Now I have soldered everything on the circuit-board, and now I am trying to...
  2. C

    Using BR diode in my current laser pen?

    Hello, First of all, I am new here. I have read a lot on this forum, and want to build lasers myself. Currently I have a red 200mW laser pointer pen. This pen has a focus thingy on front of it so I can turn this around to change the focus distance. Can I just switch the red with a BR laser...


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