RF 433MHZ Radio Control Using HT12D HT12E | Making a Rf Remote Control Using HT12E & HT12D With 433mhz

In this instructable i'll show you how to make a RADIO remote control using 433mhz transmitter receiver module with HT12E encode & HT12D decoder IC.

In this instructable you'll can send and receive data using very very cheap COMPONENTS LIKE : HT12E (ENCODER) and HT12D (DECODER) and a pair of Rf modules of 433 Mhz.

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Step 1: Things You Need To

HT12E:



HT12D :

RF 433mhz:


3 push buttons

IC HT12D

IC HT12E

Hearders (male or female it doesn't care)

3 resistors with a value from (100 to 330) ohms

3 leds any color 3mm of diameter (miniature)

1 Megaohm resistor for IC of the transmitter (IMPORTANT)

a 68K or very very neraly resistor value for the receptor (IMPORTANT)


3 push buttons

Hearders (male or female it doesn't care)

3 resistors with a value from (100 to 330) ohms

3 leds any color 3mm of diameter (miniature)

1 Megaohm resistor for IC of the transmitter (IMPORTANT)

a 68K or very very neraly resistor value for the receptor (IMPORTANT)

Step 2: Operation Overview

The RF transmitter with and a good antenna can send data up to 100m (outdoor and no osbtacles).

operation voltage of RF transmitter is : (3.3v - 5 v)

Operation voltage of RF receiver is: (5v - 9v).

Step 3: Making a Transmitter

The operation voltage of RF transmitter is : (3.3v - 5 v)

PINOUT OF HT12E IC (ENCODER)

Pin 1-8: Asignement of receiver direction, it mean it can changing of adresses for comunication individualy if is needed

9. VSS connected to GND

10-13. AD in this pins is for to transmiting data of 3 bits (in our case to the receptor)

14. Transmission enable, it can be done connecting this pin to GND

15-16. In this ports it have to put a "oscillation resistor" very very important use the value of 1 M ohm

17. This pin have to be connected to Data pin of our 433 Mhz RF transmitter.

18. This pin goes connected to VCC or our positive terminal of our power supply or battery

Step 4: Making of a Receiver

PINOUT OF HT12D IC (DECODER)

1-8. Connected to gnd for enable comunication with the HT12E

9. VSS this pin goes to GND.

10-13. "AD" the IC use this pins for the output data that is sended with the transmitter, in our case leds for indicating receiving info and direct output for to connect a relay or anything you want.

14. "DIN" this pin goes connected to DATA of our 433 Mhz RF receiver.

15-16. In this ports goes connected a resistor with a value of 68 k ohms or very very close value like 70 k or 60 k (IMPORTANT: Don't change the value of this resistor if you make that your circuit it doesn't work).

17. No connection.

18. this pin goes to VCC or the positive of our power source

Step 5: Demo Output

For output please refer the given image and

Thank for see my instructable!

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