This document describes a project to identify devices using RF communication. The project uses a microcontroller, LCD, RF module, encoder, decoder, switches, buzzers, and power supply. The encoder encodes device identification information that is transmitted via RF and received and decoded by the receiver part. The goal is to allow devices to be identified and controlled remotely by transmitting and receiving RF signals.

1. KAKATIYA INSTITUTE OF
TECHNOLOGY AND
SCIENCE FOR WOMENS

2. IDENTIFICATION OF DEVICES USING RF
COMUNICATION
 BATCH -16
 UZMA SANOBER(096B1A0472)
 UZMA NAHID(096B1A0473)
 K. ALEKHYA(096B1A0437)
 V. SWAPNA(096B1A0475)

3. We forget things here and there that results
frustration

4. So got to do something

5. Just need to press a switch
It is possible through our project
IDENTIFACTION OF DEVICES USING RF
COMUNICATION

6. COMPONENTS
Power supply
Micro controller
Lcd
Rf module
Encoder
Decoder
Switches
Buzzers
9v battery
devices

7. POWER SUPPLY SYSTEM
AC OR DC INPUT OUTPUT DC
POWER SUPPLY CIRCUIT
The INPUT could be the 240V 50Hz
mains supply or a dc supply from a car
battery
An OUTPUT could be 5v-12v DC

8. MICRO CONTROLLER

9. A smaller computer on chip ram, rom, i/o ports
Eg: motorola 6811, intel 8051, & pic 16x
In microcontroller all memories are connected in internal way.
The micro controller circuit is simple and less expensive .
It consists of 40 pins.
External clock pins are used for fetching and decoding.
Port 0 contain both address and data lines.
Port 1 consists of internal pull up registers .
Port 2 contains only address lines.
Port 3 used for input/ output purpose and this pins are used for multi purpose.

10. LCD (LIQUID CRYSTAL DISPLAY)
it has 16 pins
2 pins vcc
2 pins ground
3 control pins
1 contrast pin
8 data pins
lcd is very helpful in proving user inter face as well as debugging purpose

11. RF MODULE
Rf is a rate of oscillation in the range of about 3 KHZ to 300 GHZ, which
corresponds to the frequency of radio waves and the alternating current which carry
radio signals.

12. ENCODERS AND DECODERS

13. ENCODER
the encoders are series of COMS LSIs for remote control system application they
are capable of encoding information which consists of N address bits and 12 N data
bits.
DECODER
the decoders are a series of CMOS LSIs for remote control system applications
they are paired with Holtek series of encoders.
The decoders receive serial address and data from a programmed series of
encoders that are transmitted by a carrier using an RF or an IR transmission
medium.

14. SWITCHES
In electronics, a switch is an electrical component that can break an electrical
circuit, interrupting the current or diverting it from one conductor to another

15. BUZZERS

16. SIMULATION CIRCUIT DESIGN

17. TRANSMISSION PART

18. RECEIVER PART

19. IDENTIFICATION OF DEVICES USING RF
COMMUNICATION