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Thread: homemade LED's




  1. #21
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    ya i dont think it goes that high i would use 2.7v as voltage forward

  2. #22
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    cool, thanks guys--it just says on the box the led came in "5 volt" so I assumed that's what it was
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  3. #23
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    Quote Originally Posted by Wiggo
    The blues can be got here so someone would have to have them there as well ya'd think. :?:
    &lt;center&gt;:cheers:&lt;/center&gt;
    Wiggo thinks correctly again: Radio Shack, being a
    franchise outlet, may/nought have/be willing to stock needed LED's/resistors; however there are many other type's of stores
    that always have them in stock. And i guess best resource for
    Malabooboo, given your location, would be Fry's Electronic's-brick &amp; mortar/outpost.com -click &amp; mortar.
    But, also found them yesterday, in Portland Hobby shop
    at killer price: bag of 5 incl. resistors @ $4.00 in White/Red/Green/
    yes,even Blue.......several sizes too.:wave:
    Happiness isn't something you experience; it's something you recall.

  4. #24
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    these are the LEDs I got, and it says on there "Typical Voltage is 5.0, with a maximum voltage of 6.0V"

    you guys were saying blue leds are usually 2.7--how come this one is so high?

    if my LEDs are 5V, I can just use my 5V wire from the power supply with no resistors, right? (sorry, I'm new at this whole electrical thing)
    <table width=\"500\" height=\"140\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr><td width=\"163\" bgcolor=\"#FFFFFF\"><font face=\"Verdana, sans-serif\" size=\"1\">&lt;strong&gt;:: Tim''s Rig ::&lt;/strong&gt;</font></td>
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  5. #25
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    this means that the LEDs have a built in resistor... again when u buy LEDs ask ask ask for a spec sheet of the LEDs u are buying on the spec sheet you will know every thing about the LED, if u have gotten the info that 5v will work and 6v max then plug it in and try it i guess i mean the worst that can happen is u will hear a pop and some smoke come from the LED, (but dont hold my word for it just in case it does not) that is if u have hooked it up right make sure not to mess up the (-)'ve and (+)'ve terminals as pluggin in some LEDs the wrong way can kill them, but i have never had this happen to me all that happened is that if u plug it in the wrong way it will not work :omg:

  6. #26
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    built in resistor? nice!

    how can you tell which is the positive?
    <table width=\"500\" height=\"140\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr><td width=\"163\" bgcolor=\"#FFFFFF\"><font face=\"Verdana, sans-serif\" size=\"1\">&lt;strong&gt;:: Tim''s Rig ::&lt;/strong&gt;</font></td>
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    Optorite 4x DVD+/-RW

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  7. #27
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    ok here is a site that came across me http://www.ledreps.com/faq/default.htm
    it should solve any questions u have about polarity and so on

  8. #28
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    Default Re: homemade LED's

    I bought some blue LED's (5mm, 5 volt, 30mA, 300mcd) at radio shack. And i need to know what kind of resistors i need to make them work right? I have a 12 volt power supply. I can make the lights come on but than are not bright.

  9. #29
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