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are there any flexible/bendable project boards?

Discussion in 'Electronic Basics' started by [email protected], Jul 17, 2005.

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  1. Guest

    I have a RC car, and 100 or so bright LEDs that I want to use to
    illumate the outline of my car with a projected ellipse onto the
    ground. Sorta like the life-size race cars with under lights...

    Mounting the LEDs on the chassis of my RC car wouldnt work well as
    sometimes rocks will be flying by them. So I'm thinking about making a
    ring, or well elliptical ring, of LEDs and mounting them slightly above
    the wheels so that they are out of the line of fire.

    I just dont know of a good way to make a ring/ellipse that LEDs and
    resistors could be soldiered onto. Project boards are not flexible...

    Any ideas?

    Thanks,
    --Farrell F.
     
  2. John Fields

    John Fields Guest

     
  3. Clint Sharp

    Clint Sharp Guest

  4. Rich Webb

    Rich Webb Guest

    Poke the LED leads through a flexible rubber sheet, cut from an old
    bicycle inner tube or something similar. Solder wires to the leads, then
    clip them. Probably easier to put the current-limiting resistors in the
    body of the car.
     
  5. If you want to use surface mount LEDs on a flexible board, you can fet
    FR4 fiberglass copper clad down to something like 6 mil thickness.
    Digikey has some 5 mil, double sides 1/2 oz. copper with positive resist:
    http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=411792&Row=427841&Site=US
    and I recently got some of this single sided, bare 1 oz copper on 6
    mil FR4 from Ebay:
    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7520658448&category=4660

    You will have to be careful to place the LEDs and any resistors
    axially, with respect to the curve, or they will fracture when you
    bend the board. They might, anyhow.
     
  6. Rich Grise

    Rich Grise Guest

    Well, you get a tortilla big enough to go all the way around the
    car...

    ;-)
    Cheers!
    Rich
     
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