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Radio Remote Control Using DTMF

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New Member
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.


Well-Known Member
Most Helpful Member
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.
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