This document describes a student final year project to create a remote control using RF communication. A group of 6 students designed both a transmitter remote and receiver circuit that can control home appliances like TV, fans, and lights within a range of 400 feet. The remote control uses ASK transmission and features advantages over infrared remote controls like longer range and ability to transmit through walls. The project aims to provide an improved user experience for remote control functions.

2. MENTOR’S NAME
JOYDEEP PAUL (Head of the
department of Electronics &
communication engineering)
AIEMD

3. FINAL YEAR PROJECT BY
 AKSHAY PRAKASH (11 ECE 13)
 SHANTANU GUPTA (11 ECE 38)
 ALOK SUTRADHAR (11 ECE 28)
 SURAJ KUMAR (11 ECE 11)
 AKASH PRATAP SINGH (11 ECE 35)
 ASIT KUMAR JHA (11 ECE 50)

4. INTRODUCTION
THIS IS A SIMPLE TYPE REMOTE CONTROL THROUGH
RF COMMUNICATION.
IN THIS PROJECT REMOTE HAS BEEN DESIGNED FOR
VARIOUS HOME APPLIANCES LIKE TELEVISION, FANS
LIGHT ETC.
WE CAN CONTROL ANY APPLIANCES BY USING THIS
REMOTE WITHIN THE RANGE OF 400 FOOTS.
THIS PROJECT CONSIST OF TWO SECTION,
TRANSMITTER (REMOTE) SECTION AND RECEIVER
SECTION.

5. WHEN EVER WE PRESS ANY KEY IN THE REMOTE IT
GENERATES CORRESPONDING RF SIGNAL, AND THIS
SIGNALS ARE RECEIVED BY THE RECEIVER UNIT.
 ASK TRANSMITTER AND RECEIVER IS USED AS
TRANSMITTER AND RECEIVER. HT12E, HT12D
ENCODERS AND DECODERS ARE USED IN THIS
ELECTRONIC CIRCUIT.

6. OBJECTIVE
 IN CONSUMER ELECTRONICS , A REMOTE CONTROL
IS A COMPONENT OF ELECTRONIC DEVICES SUCH AS
TELEVISION, DVD PLAYER AND OTHER HOME
APPLIANCES USED TO OPERATE THE DEVICES
WIRELESSELY FROM LONG DISTANCE.
 REMOTE CONTROL IS A CONVENIENCE FEATURE FOR
THE CONSUMER AND CAN ALLOW OPERATION OF
DEVICES THAT ARE OUT OF CONVENIENT REACH FOR
DIRECT OPERATION OF CONTROL.

7. BLOCK DIAGRAM

8. REMOTE CONTROL TRANSMITTER CIRCUIT

9. REMOTE CONTROL RECEIVER CIRCUIT DIAGRAM

10. COMPONENTS USED
 TRANSISTORS - 1. BC558
2. SL 100
 IC - 1. HT12D
2. HT12E
3. CD 4017
4. LM 7805
 RESISTORS - 1. 180K
2. 1K
3. 39K
4. 560E

11. COMPONENTS
CAPACITORS - 1. 100nF
2. 100MFD/16V
LED - RED
DIP SWITCH
PUSH TO ON SWITCH
ASK TRANSMITTER
ASK RECEIVER

12. EXISTING MODEL
 REMOTE IR & ASK IR ARE VERY LOW SPEED, LOW
FREQUENCY USES FOR IR, THEY OPERATE
AROUND 2400 BAUD.
 THERE ARE SOME PHYSICAL LIMITAIONS IN
ADDITION TO THE FACT THAT THE SUB CARRIER
MUST BE 38KHZ.

13. DISADVANTAGE OF EXISTING
MODEL
 REQUIRES TYPICAL IR POINT AND SHOOT
ACTION.
 UNABLE TO PROVIDE TWO WAY
COMMUNICATION.
 UNABLE TO TRANSMIT ITS SIGNAL THROUGH
DOORS,WALLS AND FURNITURES.
 DOESN’T PROVIDE A BETTER RANGE.

14. PROPOSED MODEL

15. ADVANTAGE OF PROPOSED MODEL
 IMPROVED USER EXPERIENCE AND MUCH
BETTER RANGE.
 DOESN’T REQUIRE THE IR POINT AND SHOOT
ACTION .
 ALLOWS TWO WAY COMMUNICATION AND
ENABLES A STATUS DISPLAY ON THE REMOTE.
 TRANSMIT ITS SIGNAL THROUGH DOORS,WALLS
AND OTHER OBSTACLES.

16. SUMMARY
 COMMONLY REMOTE CONTROL ARE CONSUMER IR
DEVICES WHICH CAN SEND DIGITAL CODED PULSE
OF INFRARED RADIATION TO CONTROL FUNCTION
SUCH AS POWER, VOLUME, TUNNING, TEMPERATURE
SET POINT, FAN SPEED OR OTHER FEATURES, BUT
HERE WE ARE USING RF BECAUSE IT HAS LONG
RANGE AND BIDIRECTIONAL COMMUNICATION.
 REMOTE CONTROL HAS CONTINUALLY EVOLVED
AND ADVANCED OVER RECENT YEARS TO INCLUDE
BLUETOOTH CONNECTIVITY,MOTION SENSOR-
ENABLE CAPABILITIES AND VOICE CONTROL.

17. BIBLIOGRAPHY
WWW.CIRCUITSTODAY.COM
WWW.ELECTRONICGARAGE.COM
WWW.WIKIPEDIA.IN
WWW.ELECTRONIC4U.COM

18. THANK YOU