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Thread: homemade LED's




  1. #1
    Join Date
    Aug 2002
    Location
    Santa Cruz, CA
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    232

    Default

    here's a geeky question for you guys....

    I bought some blue LED's (5mm, 5 volt, 30mA, 300mcd) today at radio shack, and some 460 ohm resistors to make them work with the power supply

    did I buy the right resistors? I asked the radio shack guys, but they had no idea.

    anyone hook up their own LED's before? any good tutorials online?
    <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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  2. #2
    Join Date
    Jan 2003
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    282

    Default

    ohhhhhhh, i saw a calculator for finding the rite resistor....
    i dont remember where it was tho.
    sorry so vauge, i erased my history recently....

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  3. #3
    Join Date
    Nov 2001
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    This link perhaps?
    http://www.bit-tech.net/article/68/

    Did you know Radio Shack has 12V LED's:?:
    The reason a diamond shines so brightly is because it has many facets which reflect light.

  4. #4
    Join Date
    Nov 2001
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    New England Highlands, Australia
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    I've spotted a few places here that sell 12V LED's in a variety of colours which negate the need for resistors. :devil win
    &lt;center&gt;:cheers:&lt;/center&gt;

  5. #5
    Join Date
    Nov 2001
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    This is what I'm using ATM;
    http://www.radioshack.com/product.as...5Fid=276%2D272

    They have red and green, but I don't believe they have the much sought after blue?
    I reckon if that is the color you are after, the resistor might be the only option at the Shack.
    Shame, as that one in the link is a breeze to install - 9/32" hole, and you are in business.
    The reason a diamond shines so brightly is because it has many facets which reflect light.

  6. #6
    Join Date
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    Default

    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;

  7. #7
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    Santa Cruz, CA
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    well that calculator says I need a 270 ohm resistor (how in the world was I so off?), so I guess I'll try that first since 4 resistors are only like 97 cents.

    If not, I'll try looking for some 12v blue LED's online somewhere. I like blue, heh, heh.

    thanks for the help, guys.
    <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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  8. #8
    Join Date
    Sep 2002
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    1,636

    Default

    the 12v LEDs at Radioshack are regular LED w. a resistor.
    SO they did the work for you, but last time i checked they were a lot more

  9. #9
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    Aug 2002
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    are there any places online that I can just order some nice and easy 12v BLUE LED's?
    <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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    <td width=\"23\" bgcolor=\"#FFFFFF\"><img src=\"http://www.bluespherestudios.com/images/spacer.gif\" width=\"23\" height=\"25\"></td><td width=\"151\" background=\"http://www.bluespherestudios.com/images/case1.gif\" align=\"center\"><font face=\"Verdana, sans-serif\" size=\"1\">Chieftec Blue Case</font></td>
    </tr><tr><td bgcolor=\"#f3f3f4\"><font face=\"Verdana, sans-serif\" size=\"1\">Asus A7V333
    Athlon XP2500+

    Thermaltake Volcano 7+
    PC 2700 DDR@1 GB

    MSI G4 Ti4200 TP64
    Detonator Drivers 53.03
    </font></td><td bgcolor=\"#f3f3f4\"><font face=\"Verdana, sans-serif\" size=\"1\">Seagate 60GB 7200rpm

    Seagate 80GB 7200rpm

    Optorite 4x DVD+/-RW

    Sony 16x DVD

    Sony Floppy!

    Fans@2 intake, 3 exhaust</font></td><td bgcolor=\"#f3f3f4\"><img src=\"http://www.bluespherestudios.com/images/case4.gif\" width=\"23\" height=\"82\"></td><td><img src=\"http://www.bluespherestudios.com/images/case2.gif\" width=\"150\" height=\"82\"></td></tr>
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  10. #10
    Join Date
    Aug 2002
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    hey another question: at radio shack there were a lot of 270 ohm resistors, but some were 1/4 watt, some where 1/2 watt and some were 1 watt

    what does this wattage mean and which should I get for my 5 volt, 30mA LED's?
    <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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    <td width=\"23\" bgcolor=\"#FFFFFF\"><img src=\"http://www.bluespherestudios.com/images/spacer.gif\" width=\"23\" height=\"25\"></td><td width=\"151\" background=\"http://www.bluespherestudios.com/images/case1.gif\" align=\"center\"><font face=\"Verdana, sans-serif\" size=\"1\">Chieftec Blue Case</font></td>
    </tr><tr><td bgcolor=\"#f3f3f4\"><font face=\"Verdana, sans-serif\" size=\"1\">Asus A7V333
    Athlon XP2500+

    Thermaltake Volcano 7+
    PC 2700 DDR@1 GB

    MSI G4 Ti4200 TP64
    Detonator Drivers 53.03
    </font></td><td bgcolor=\"#f3f3f4\"><font face=\"Verdana, sans-serif\" size=\"1\">Seagate 60GB 7200rpm

    Seagate 80GB 7200rpm

    Optorite 4x DVD+/-RW

    Sony 16x DVD

    Sony Floppy!

    Fans@2 intake, 3 exhaust</font></td><td bgcolor=\"#f3f3f4\"><img src=\"http://www.bluespherestudios.com/images/case4.gif\" width=\"23\" height=\"82\"></td><td><img src=\"http://www.bluespherestudios.com/images/case2.gif\" width=\"150\" height=\"82\"></td></tr>
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