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Radio Remote Control Using DTMF

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by Nhan, Aug 13, 2002.

  1. Nhan

    Nhan New Member

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    Aug 13, 2002
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    Hi everyone,
    My name is Nhan, from Australia.
    I am very interested in the project "Radio Remote Control Using DTMF" and planning to build one as my school project. But I am not very sure and clear of how the two circuits (transmitter and receiver) work in details
    Could someone kindly help me out, thanks very much.
    Nhan
     
  2. qqqq_@

    qqqq_@ New Member

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    hi nhan
    and i nterested
    any one help
     
  3. audioguru

    audioguru Well-Known Member Most Helpful Member

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    Canada, of course!
    Why use old DTMF? The output would be simply on and off.

    Why not use the digital proportional pulse-width-modulated signals that are used by model airplanes, boats and helicopters? They control servos that move any amount you need.
     
  4. dave

    Dave New Member

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  5. jitun2

    jitun2 New Member

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    Here is schematic of a DTMF remote controller and receiver.You can use decoder and control upto 10 devices.
     

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