can I get programme for 89c51 for the circuit -: 4 channel programmable FM remote control :- ...the abstract of the project is given below....
This is programmable FM remote control can be used for some specific applications. Phase Lock Loop (PLL) IC-567 is used in transmitter and receiver part as oscillator and filter respectively. It can operate/ control any device / application from the distance of around 50 meter (this range can be increased up to 1-2 Km if good transmitter is used).
A Phase Lock Loop (PLL) IC 567 is utilized in both transmitter as well as receiver part. In the Tx part IC-567 is configured such that it work as variable frequency oscillator. It generate four different frequencies. Standard FM mike (cordless mike) is used as FM transmitter which is used to modulate these 4 frequencies. At receiving side FM radio (which works as FM demodulator) demodulates the signal. Four different IC-567 all are configured as PLL to pass four different frequencies generated by Tx. At last signal will be given to micro-controller to perform some specific task.
Note:- The typical design limits the number of channels to 4 only because the filters used at receiving end cannot differentiate more frequencies. However 4 channels are enough for some specific industrial application. Here I have developed . REFERENCE: