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  1. poseidon05

    Problem with positive case pin and negative host

    I'm trying to build a 505nm pen pointer and am using a sharp gh05030c2lm diode, which has the positive pin as the case pin. The problem is it's in a brass heatsink which touches the interior of the host, which is negative. So instead of the positive current going into the diode, it just escapes...
  2. poseidon05

    Having trouble with 6x10mm diode housing

    I am new to building lasers and need help. I am trying to build a 505nm pointer. I got a 505nm35mw diode and a laserland 6x10mm focusable diode housing with plastic lens. The problem is that if I focus the beam down, there is a lot of artifacts around the dot (see pic). The smallest I can focus...


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