how to interface remote controller with HT12E and to RF Tx

[Naveen Srivastava]

how does it works, signal sends through key to encoder? how the converson is made from 12 digit to 1 serial signal, which sends through transmitter to RF receiver…

[D.V.G. Krishna]

its very simple dude

 

serial to parallel convertion

 

if you want to know more detail

 

refer to any 8051 book

 

and try to understand the working of

“SBUF” register

[Shrikant]

the encoder ic HT12E basically does parallel to serial conversion.

The entire setup is a ASK method

Similarly at the receiver the decoder ic HT12D does serial to parallel conversion after getting the data from the Rx

Hope this was helpful

[Deepak Gupta]

Parallel to serial conversion is performed at encoder side. Data is continuously available at data out pin according to 12 input bits.

 

When key is pressed that particular bit in serial data got changed.

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