GSM BASED HOME AUTOMATION

BY KSHITISH KHANDAI (2011ETC 009)

TAPAN KUMAR MOHANTA(2011ETC 037)SAROJ KANTA SATPATHY (2011ETC 046)

DEBA PRASAD PATRI (2011ETC 048)

INTRODUCTION  Here is a circuit that lets you operate your

home appliances like lights and water pump from your office or any other remote place.

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BLOCK DIAGRAM

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POWER SUPPLY

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MICRO CONTROLLER

AT-MEGA328 : it is a popular microcontroller chip produced by ATMEL.

It is the one of the microcontroller chips that are used with the popular ARDUINO boards & upgraded with it.

It has an Analog to digital converter inside it.

The device Operate Between 1.5 to 5.5 volts

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PIN DESCRIPTIONS Pins 5.6,11,12 - Input Pin 15,16,17 - Output. Pins 7 – VCC Pins 8,22 – GND Pin 9,10 – Crystal Oscillator Pins 23-28 - Input Pins 1- Reset Pin 3,2,7,1, - Programming Pin Pin 22 - Optocoupler

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DTMF

If we press 1 , then two frequencies of corresponding row and column adds .i.e., 697hz + 1209hz = 1906hz

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3.5 MM EARPHONE JACK

One wire comes from the ground terminal of the jack that is connected to common ground of the complete circuit .The other wire can be attached to any one of two signal terminals.

Signal

Ground

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DTMF DECODERo The HT9170B/D tone

decoders consist of three band pass filters and two digital decode circuits to convert a tone (DTMF) signal into digital code output.

o When input signals are recognized to be effective, Direct Voltage becomes high, and the correct tone code (DTMF) digit is transferred.

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RELAY DRIVER ULN 2803

o ULN stands for Universal Logic Network

o ULN is mainly suited for interfacing between low-level circuits and multiple peripheral power loads

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RELAY

A relay is an electrical switch that opens and closes under the control of another electrical circuit.

In the original form, the switch is operated by an electromagnet to open or close one or many sets of contacts.

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KIT OVERVIEW

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WORKING

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SWITCHES MOBILE KEY FUNCTION

S1 5 SELECT DEVICE : ON

S2 6 SELECT DEVICE : OFF

S3 7 SELECT DEVICE : ON

S4 8 SELECT DEVICE : OFF

S5 9 SELECT DEVICE : ON

S6 O SELECT DEVICE : OFF

ADVANTAGES Home automation using mobile phone

For elderly and disabled in order to maintain their independence and safety.

Home security

Low cost and reliable system

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APPLICATIONSWhen :You are in traffic jam on the high wayWhat : You set microwave in slow cooking mode.

• Central office

• Industry Automation

• Remote control

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CONCLUSION The project “GSM BASED HOME AUTOMATION” has

been successfully designed and tested. Integrating features of all the hardware components used have developed.

Presence of every module has been reasoned out and placed carefully thus contributing to the best working of the unit.

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FUTURE ASPECTS This product is aimed toward average

consumers who wish to control household appliances remotely from their cell phones provided that the appliances are electrically controllable

Right now we have designed the project for control of three devices but it can be designed for more number of devices .It can be further expanded with a voice interactive system facility. A feedback system can also be included which provides the state of a device(whether it is on/off) to the remote user.

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ANY QUERIES ???

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