Ht12d Circuit Diagram. The ht12e encoder ic vss pin is connected to the power supply ground and the vdd is connected to the power supply vcc ic a0 a7 pins pin 1 8 are connected to the ground to set the address at 0b00000000 the switch 1 s1 switch 2 s2 switch 3 s3 and switch 4 s4 are respectively connected to. D0 of ht12d.
This means that we can make 2 4 16 16 different combinations of inputs and outputs. These are 18 pin ic s which can operate between 3v to 12v input power supply. Now reciever side wiring is same as transmitter except the fact it has no potentiometer input it has just four wires connected as following.
D3 of ht12d.
The ht12d is not only specific to a single transmitter and receiver. Rf remote control circuit designed with 434 mhz ask amplitude shift keying transmitter and receiver here ic ht12e act as encoder and ic ht12d act as decoder this circuit is constructed with easy available components. For complete information watch my video. If you want security you can connect any of the 8 pins to 5v to make it high.
