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Thread: a question about led

  1. #1

    Default a question about led

    Hi!

    I just got my saber and I have a question can I adjust my led somehow because it's kinda hurting my eyes

  2. #2

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    use a blade or a blade plug to keep it shining directly in your eyes...

    you could also try using a bigger resistor... reducing the mA should help...
    "NO! This one goes here, that one goes there"-H.S.

    Saber building in a nut shell, as told by a smuggler

  3. #3

    Default

    Yeah, a bigger resistor (higher resistance) will make it dimmer.

    This probably goes without saying, but it's good practice to not aim the business end of your saber at anyone's face without the blade or a plug installed. These high-powered LEDs can really mess up your eyeballs if stare directly at them.

  4. #4

    Default

    Definitely NEVER look at a high-powered LED without protection. A blade plug, a blade, or at least a good pair of sunglasses while testing.

    It also helps if you work in a well lit room. My green sabers are almost painful to look at in the dark, but don't bother me at all with the lights on.
    We all have to start somewhere. The journey is all the more impressive by our humble beginnings.

    http://led.linear1.org/1led.wiz for the lazy man's resistor calculator!
    http://forums.thecustomsabershop.com...e-to-Ohm-s-Law for getting resistor values the right way!

  5. #5

    Default

    What sound board are you using, if any? Some soundcards hace led drivers, which will allow you to adjust the current, and therefore, the brightness of the LED.

  6. #6

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    hmm bigger resistor you say but I'm using a "BuckPuck 1000mA 4-wire"? what can I do then?

    I'm not using a soundboard.

  7. #7

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    you could switch it to the 700ma buckpuck, or remove the buck puck and just use a resistor.

    Got a question? Start Here. Have you tried the Thread Index yet? Most questions can be answered there.

  8. #8

    Default

    okay then, lets say that I want to change to a resistor. How big resistor do I need?

  9. #9

    Default

    It depends.

    You'll need to know 3 things: The voltage of your battery pack (source voltage), the forward voltage of your LED (Vf), and the current you want to feed your LED. Plugging those three values into a resistor calculator (there's one in my signature) will give you an appropriate resistor.

    With the 1000mA BuckPuck, you're giving the LED 1000mA of current. Reducing that number will reduce the brightness.

    On another note: I think you're the first person I've seen on the forums who wants their saber to be *less* bright.
    Last edited by Silver Serpent; 09-18-2014 at 12:44 PM.
    We all have to start somewhere. The journey is all the more impressive by our humble beginnings.

    http://led.linear1.org/1led.wiz for the lazy man's resistor calculator!
    http://forums.thecustomsabershop.com...e-to-Ohm-s-Law for getting resistor values the right way!

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