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  1. J

    Need a new laser (3V-5V)

    Had these type of laser pointers. They work on 3 1.5V batteries, I was using 5V from arduino. Could I have burned them out? They still work but brightness has reduced significantly. They were working fine at 5V for a while. Anyway I am now looking for a new laser, many of them use 2 1.5V...
  2. J

    DDL driver QUESTIONS

    I believe it is an linear regulator driver using lm317 ? but what does DDL stand for? Also I read that DDL drivers can not modulate lasers fast, thinking above 10kHz. Is this true? if so why is that? PS: what driver do fast modulating laser modules use?
  3. J

    What do you call..

    Does anyone know the name of this unit Where can I buy such a thing, I have been told it came out of an old laser printer or bar-code scanner.
  4. J

    Help with laser and glasses

    Hello, looking for a safe first time laser + safety glasses. Need it for a small scale scanning project. A focus-able one may be useful for this type of use. I am not sure about power and wavelength. Apparently 5mW green laser is more powerful than a 5mW red laser etc hence the confusion...
  5. J

    Hello LPF

    Hello I am new here and think it is a good forum for information about lasers. :D


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