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remove controled devices

Discussion in 'Electronic Basics' started by Jon Slaughter, May 27, 2007.

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  1. I'll be needed to create a simple remote control system soon and I'm curious
    as to my options(and I have no experience with rf). I'm looking at rf pics
    as they seem very simple but one thing I'm worried about is the range which
    is, I guess, around 20-30 feet maybe(only estimation as its 10dBm and I know
    from my remote project earlier that 12dBm was bout 40-40 feet).

    I'd like to have a little more distance than this if possible. Are there any
    other very simple devices I should know about or maybe some other simple
    method? I just want to essentially send an on and off pulse(that of course
    won't cause any problems with screwed up ther rf devices). Simple in this
    case is probably the best. What I want is probably what is comparable to
    what is in a car remote but I have not had the ability to open one of these
    thigns up and take a look.

  2. ehsjr

    ehsjr Guest

    Get an R/C car/truck/etc toy. Replace the motor with
    a relay - choose your relay coil voltage based on
    what the toy delivers to the motor.

  3. That might work. I'll have to check and see what I can do with it but its
    definitely an option. Although I'd rather do it from scratch myself for the
    learning experience(but don't want to get to complex for first attempt)).
    Using something like that kinda takes all the fun out of it.

  4. Chris

    Chris Guest

    Hi, Jon. Ed's idea is a good one -- it's probably the least expensive
    way to get it done.

    If you want a challenge or need to put it together yourself, you might
    want to take a look at a kit project. The Velleman K8058 8-channel
    remote control is a good choice for the transmitter, with one or more
    K8070 one channel relay output receivers. Both of these are in kit
    form, and will exceed your requested range by quite a bit -- they
    claim over 100 feet open field. The receiver gives you one shot,
    toggle/latch, or timed output.

    Good luck
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