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Making LED Flashlight water resistant???

Discussion in 'Electronic Basics' started by BeachDude, Jul 28, 2004.

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  1. BeachDude

    BeachDude Guest

    I'm trying to make a LED flashlight for my bike or camping - and after
    putting the whole thing togeher with the batterys and
    do I keep it from shorting out in damp weather (rain etc)???

    I see these products that are like "liquid electrical tape"... they
    resemble liquid rubber... are they any good?

    What about dielectric grease? If I ever need to do any
    modifications - how easily do these rubberized / sealant products come

    If I was to silicon/grease/rubberize my LEDs right up to the bottom of
    their plastic lense (effectivly covering the pos/neg legs) would that
    be suffecient to protect them against shorts???

    Any tips, tricks, suggestions???
  2. John Larkin

    John Larkin Guest

    Just use a little clear plastic plastic food container with a
    wire-snap lid and o-ring seal; leave the LEDs inside. About $0.99 at
    Target. Then the only problem is the switch.

    How about a reed switch operated by an external magnet?

  3. If you do not intend to dive with this light, but are just worried
    about dew and rain, almost any water proofing will do. Shorting is
    not much of a problem, since the voltage is so low. Corrosion is the
    biggest problem, especially if any salt water is involved. I would
    probably smear a bit of silicone caulk around the internal wires and
    use a bit if silicone grease on the battery terminals. If it gets
    dunked, open it up and pour the water out and you should be fine.
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