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I'd like to get rechargeable batteries for my DX true 30. Which ones would you recommend? I was thinking Li ions would be best but what current and voltage would be optimal?

I just noticed that there is a small, about 3/4" (+/- 1/4" I can't seem to estimate it well) circular spot in my vision where it seems to be a very light gray color. Only when I blink my eyes in rapid succession do I notice and even when I do it still takes a while to see it. It may have not...

So I just finished building my 803T Blu-ray laser and I have a few questions. I have the pot set at ~100mA so I would guess it is putting out around 90mW. 1. The laser doesn't appear all that bright but why is it as dangerous as a green laser that appears much much brighter? 2. How dangerous...

I was wondering if HEV blocking sunglasses would be fine with use for a blu-ray laser. These sunglasses block UV, purple and blue light. My concern would be to find one that has a OD at at least 1.85 for a 405nm. That is if the material doesn't break down in an instant when the beam hits...