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Embedded System is a special purpose system in which the computer is completely encapsulated by the device it controls. Embedded system unlike a general purpose computer, such as a personal computer, performs one or a few predefine tasks usually with very specific requirements.

WIRELESS BASED HOME AUTOMATION SYSTEM

HARDWARE USED

8051 Micro Controller

Softwares used1. A Cross compiler for compiling and linking the code

written for AT89C51.

2. Serial Communication software for downloading code to AT89C51.

3. Operating System : Windows 2000

Interfaces used

1.Serial Communication used for downloading the hex code

2.16X2 LCD Interfacing

3.Relay Interface

4.RF Transmitter and Receiver Interfacing

5.Switch Interface

Micro controller is a chip that consists of a Micro Processor, Memory and I/O ports.

Micro Controller

INTERFACING OF AT89C51 IN

THE TX MODULE

Interfacing of AT89C51 in the TX Module

Interfacing of AT89C51 in

the RX Module

Interfacing of AT89C51 in the RX Module

WIRELESS BASED HOME

AUTOMATION SYSTEM

WIRELESS BASED HOME AUTOMATION SYSTEM

1.AT89C51 Micro Controller

2.HT12E Encoder

3.HT12D Decoder

4.16X2 LCD

5.TLP434 Module

6.RLP434 Module

The following Main devices are used in our system

HT12E Encoder

HT12D Decoder

1. Transmitter (TX) Module

2. Receiver (RX) Module

The whole system consists of two modules

Interfacing of AT89C51 in

the RX Module

Interfacing of AT89C51 in the RX Module

L293D DC

Motor Driver

16X2

LCD

Relay CKT

LED ON / OFF

BULB ON/OFF

AT89C51

DC Motor DRIVERH

T12D

RFRX

Antena

Decoder 10 KResistor

Pack

Micro Controller

DC MOTORON/OFF

WIRELESS BASED HOME AUTOMATION SYSTEM

C. Bindu Priyanka,

Concept By

N.Rajendra Kumar+91 9885364402

Designed & AnimationBy