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how to make an rf remote controller? Answered

how does a rf remote works imean its principle and how to match transmitter and receiver

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rickharris (author)2013-03-26

The transmitter sends out an electromagnetic wave, This wave is broken into short pulses to send a digital signal, often Binary.

The receiver has a tuned circuit which selects out the required Rf signal and further circuitry decodes the digital signal into an instruction.

Most controllers eg TV controller are actually infra red - look at the front i there is a window or LED it's Infra red.

If it is a car type remote it's wireless - See top answer.

http://www.howstuffworks.com/remote-entry.htm

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avinash reddy (author)rickharris2013-03-27

i need to make an rf remote controling device how to start it i mean how can i build my own transmitter and reciver

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