LED Sign

Discussion in 'The Projects Forum' started by nickels293, Nov 21, 2008.

  1. nickels293

    Thread Starter New Member

    Nov 21, 2008
    6
    0
    Hey guys,
    I'm building a sign for my dad for christmas for his bar with fiber optics and LED's. I have the fiber optic part of the project worked out by stealing the setup from an old Christmas decoration my mom had but I'm having problems with the LED portion. I am pretty sure I'm going to use a 555 or multiple 555 chips to get all the LED's to light up at different times(not to sure about the number yet) but I don't know how to power them. I want to use the power from the outlet but I'm pretty sure that will blow the LED's and the chip, the only thing I can think of is tying the power into the power from the fiber optic setup I have. I really don't want to use a battery because I dont want to have to change the sign around that much after its built. Any other ideas for how to power this would be helpful. Thanks
     
  2. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
    1,438
    368
    Simply use a DC plug-top/ wall-wart power supply.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    "Wall wart" plug-type supplies are generally unregulated DC. You'll need to add a voltage regulator to ensure proper regulation. LM317T's are easy-to-use adjustable positive regulators good for up to 1.5A. You will need to use a heat sink.

    As far as power supplies, I like Marlin P. Jones & Associates; they have good prices and ship quickly.
    http://www.mpja.com/products.asp?dept=37&main=1
     
  4. nickels293

    Thread Starter New Member

    Nov 21, 2008
    6
    0
    Okay, thanks for the ideas. Ill try those out and see which works the best, I'm thinkin the wall wart will be the best.
     
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