Indian Institute of TechnologyHyderabad

Presented By:

1.JESSU SHIRISH KUMAR (CS12B1018)

2.VEERNAPU SURI BABU (CS12B1039)

GSM BASED SMS CONTROLLER

Why is this Project ?

Can control Appliances even from long range of distances.

Ex : As soon as farmer knows power has come , he can power on the motor even from his house.

COMPONENTS

1.GSM MODULE SIM 300

Global system for mobile communication To describe protocols for 2nd generation and replaced analog

Cellular network of 1st gen.

Some of the features areControlled via AT

COMMANDS.

List of AT COMMANDS for SMS control

purpose commands

Send SMS AT+CMGS / AT+CMSS

Read SMS AT+CMGR / AT + CMGL

Write SMS AT + CMGW

Delete SMS AT + CMGD

MICRO CONTROLLERSimply a mini computer on a single Integrated circuit with a processor core , memory and programmable input and output Peripherals.

Features8K BYTES of in system Programmable Flash.512 bytes EEPROM.1K BYTES SRAM.Programmable serial USART.4.5 to 5.5V operation.

BLOCK DIAGRAM :

Micro ControllerATmega8

Relay switch/driver

appliances

GSM modemSIM 300

Cell phone

LCD (16*2)

UART(Universal Asynchronous Receiver/Transmitter)A UART is an individual(or a part of) Integrated

circuit used for serial communication over a computer or peripheral device(serial port).

Now Microcontrollers are coming with UARTs.

Serial Communication:

Process of sending 1 bit at a time sequentially over a communicational channel.

Working:

SMS sent from phone will be received by GSM modem

// by GSM PROTOCOL COMMUNICATION//AT commands helps microcontroller to get SMS

from GSM modem , then reads TEXT of SMS and display it on LCD.

//Microcontroller interfaces with GSM modem using UART//The statues of appliances will change according to

the TEXT of SMS.

Uses:

The security for a house can be enhanced.

//SMS will be sent to the owner as soon as a bugler broke into house//

Power losses can be minimized.

Things can be made more secure.