Nass
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I built this, used a UV LED would not test red. Used a red LED and i was able to test my cats "laser" toy. Batteries are weak but it read 4mw. Fun little project took me about 15 mins to make 
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FrozenGate by Avery
LED/photo diode laser power meter
- Thread starter FireMyLaser
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I built this, used a UV LED would not test red. Used a red LED and i was able to test my cats "laser" toy. Batteries are weak but it read 4mw. Fun little project took me about 15 mins to make
Are you aware that the last post on this now Known to be useless
LED LPM was almost 3 years ago....:thinking:
Have you heard of Necroposting....:thinking:
Jerry
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