Processing & Properties of Floor and Wall Tiles.pptx
Gsm based sms controller
1. 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 are
Controlled via AT
COMMANDS.
2. 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
3. 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.
4. 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 status of appliances will change according to
the TEXT of SMS.
5. 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.
