If you want to design a remote control using RF method then this circuit suitable for you, here we used 434MHz ASK (Amplitude Shift Keying) transmitter and receiver module to transmit and receive RF signal.
ASK Transmitter circuit
ASK Receiver circuit
The encoder (HT12E) and decoder (HT12D) used for unique purpose of sending key data and Receiving the key data.
The encoder can code the information of N address bits and 12 data bits, each one deals with two logic states, by the same decoder decodes the received signal from ASK receiver and give proper logic state at the output pins.
ASK Transmitter module
ASK Receiver module
|1.||ASK 434MHz transmitter and Receiver module||1|
|3.||Resistor 1.1MΩ,5KΩ,10KΩ,470Ω||each 1|
|5.||Transistor BC 548 npn||1|