1. Indian Institute of Technology Hyderabad Presented By: 1.JESSU SHIRISH KUMAR (CS12B1018) 2.VEERNAPU SURI BABU (CS12B1039) GSM BASED SMS CONTROLLER

2. 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.

3. COMPONENTS 1.GSM MODULE SIM 300 Global system for mobile communication  To describe protocols for 2 nd generation and replaced analog Cellular network of 1 st gen. Some of the features are  Controlled via AT COMMANDS.

4. List of AT COMMANDS for SMS control purpose commands Send SMSAT+CMGS / AT+CMSS Read SMSAT+CMGR / AT + CMGL Write SMSAT + CMGW Delete SMSAT + CMGD

5. MICRO CONTROLLER Simply a mini computer on a single Integrated circuit with a processor core, memory and programmable input and output Peripherals. Features  8K BYTES of in system Programmable Flash.  512 bytes EEPROM.  1K BYTES SRAM.  Programmable serial USART.  4.5 to 5.5V operation.

6. BLOCK DIAGRAM : Micro Controller ATmega8 Relay switch /driver appliances GSM modem SIM 300 Cell phone LCD (16*2)

7. 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.

8. 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.

9. 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.