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Microcontroller › AVR › how to interface remote controller with HT12E and to RF Tx
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…
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
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
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.