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Remote controlled flashlight?

Discussion in 'Electronic Basics' started by Harry, Aug 12, 2010.

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  1. Harry

    Harry Guest

    I would like to be able to turn a flashlight on and off with a
    wireless remote from about 20' away (or so). I figured if I get one of
    those big plastic flashlights with the 6 volt battery there should be
    room for whatever electronics are needed, but I don't know how to do
    I realize this sounds like a bit of a strange request, but it's for a
    theatrical production in which we'd like to be able to turn a
    flashlight on and off without anyone near it.
    Any thoughts on either where I could find something like this, or how
    to make something? It has to be pretty simple for me to able to do it
    (limited electronics ability and knowledge).
  2. I'll probably get flamed for suggesting such a non-technical solution,
    but since it's likely going to be a one-off (or short term play I
    suppose?), I imagine time, cost and simplicity would be an issue also.

    Have you considered a string/fishing line and a micro-switch?

    If you can afford the space and risk of trippage issues, it's cheap and
    does the job.
    Even if you need an elaborate pulley system to go around bends, it'll
    still be quicker, cheaper and simpler than entirely electronic solutions.
    Especially since you're a novice and might not afford the build time of
    something not already available off the shelf.
  3. amdx

    amdx Guest

    Why not just run a pair of small diameter wire?
    If you go to small and/or to long you will have unacceptable
    voltage drop and the bulb will be dim. You could add a 1.5 volt
    battery in series to get it right.
    You can leave the batteries in the flashlight and break the circuit and
    connect the wires at the break then short the other end of the wire
    to light the bulb. Or you can just connect the wires to the bulb and
    have your batteries and switch wherever it is convenient.
  4. TomBbiasi

    TomBbiasi Guest

    Go to Home Depot and get a wireless doorbell.
    You should be able to figure it out from there.

  5. That's not really going to work. You'll have to keep the string taught,
    and figure out a method where pulling the string turns it on and pulling
    it again turns it off.

    You're right, though, that there is a simple solution. Just wire in two
    strands of wire, then bring them to a switch where someone can operate

  6. A suitably bent paper clip can be used to hook a taught line.
    I specifically mentioned a microswitch for the light actuation requirement.
    Toggle functionality is more or less an option, but probably not a
    Since the switch is going to be manned, that's not going to be a problem.
    Copper is expensive, fishing line is cheap. :)
  7. Harry

    Harry Guest

    I was wondering if that would work. I'd like it so that one push of
    the button will turn the light on and another push will turn it off.
    Do you think the doorbell would work like that?
  8. Tom Biasi

    Tom Biasi Guest

    The latter.
    Just made the jump to Win 7 and Live mail.
  9. amdx

    amdx Guest

    I don't know, but two solutions, rather than a momentary switch like the
    wireless doorbell has, use a switch similar to a wall mount light switch.
    Or wire up a " latching relay " " x " google term.
  10. Tom Biasi

    Tom Biasi Guest

    Now what you are asking for is a bi-stable condition.
    A bi-stable relay would do this.

  11. roma

    roma Guest

    Have a look ,
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