HOME AUTOMATION USINGANDROID APPLICATION

ByG.Jayashankar (119X1A0433)

CONTEXTIntroductionWhat is home automationBlock diagramComponentsAbout ardiuno unoAdvantagesApplicationsConclusions

INTRODUCTIONThere is increasing demand for smart homes,where

appliances react automatically to changing environmental conditions.

Can be easily controlled through one common device.

The possible solution the user controls devices by employing a FPGA(Field Programmable Gate Array).

What is Home Automation?Home automation involves computerised or

automatic control of some electronic and electronics systems.

The lightining, temperature, etc., can be controlled by the remote mobile host controller.

These devices communicate wirelessly through the bluetooth with the host device.

BLOCK DIAGRAM

ARDUINO UNO

● Arduino is a popular open-source single-board microcontroller.

● Arduino is the micro controller board based on Atmega328.

● Arduino is a hardware can be programmed using a wiring-based language(similar to C++).

● It has 14 digit input/output pins of which 6 can be used as PWM output.

● It works with 16M Hz crystal oscillator.● It has in built boot loader.

● Official Arduinos have used the AtmegaAVR series of chips, specifically the ATmega8,ATmega168, ATmega328, ATmega1280, and ATmega2560.

● A handful of other processors have been used by Arduino compatibles.

● Most boards include a 5volt linear regulator and a 16MHz crystal oscillator.

● Although some designs such as the LilyPad run at 8MHz and dispense with the onboard voltage regulator due to specific form-factor restrictions.

SPECIFICATIONSMicro controller : Atmega328Operating voltage : 5VDigital I/O pins : 14(6 provide PWM output)Analog pins : 6Flash memory : 32Kb of which 0.5kB is used for

boot loader.SRAM : 2KbClock speed : 16MHzEEPROM : 1Kb

HC 05 BLUETOOTH MODULE

●HC-05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module. designed for transparent wireless serial connection setup.

●Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband.

●It uses CSR Bluecore 04-External single chip Bluetooth system with CMOS technology and with AFH(Adaptive Frequency Hopping Feature).

●It has the footprint as small as 12.7mmx27mm. Hope it will simplify your overall design/development cycle

Specifications of HC05:● Typical-80dB sensitivity● Up to +4dBm RF transmit power● Low Power 1.8V Operation ,1.8 to 3.6V I/O● PIO control● UART interface with programmable baud rate● With integrated antenna● With edge connector

DRIVER CIRCUIT(L293DNE)

●The L293DNE are quadruple high-current half-H drivers.

●The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36V.

●The L293 is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V.

● Both devices are designed to drive inductive loads such as relays, solenoids, dc and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications.

SPECIFICATIONS Wide Supply-Voltage Range: 4.5 V to 36 V Separate Input-Logic SupplyInternal ESD ProtectionThermal ShutdownHigh-Noise-Immunity InputsFunctionally Similar to SGS L293 and SGS L293DOutput Current 1 A Per Channel (600 mA for L293D)Peak Output Current 2 A Per Channel (1.2 A for L293D)Output Clamp Diodes for Inductive Transient Suppression

(L293D)

ADVANTAGES:The main advantage of “home automation

using android application” is to “Physicaly challanged and disabled persons ”.

They are mainly used in the smart home applications.

The wireless tehnology is especialy use to inter connect the infrastructure to control.

It could be suitably used in the home automation in low cost .

The overall system is fast enough to realise the true power in wireless technology.

APPLICATIONS:As there is an increse in demand of smart

homes, where appliances react automaticaly to the change in the environment.

This wireless technology is especially usefull in home environment .

Where exist hardly any infrastructure to inter connect intelligent appliances .

CONCLUSION:Home automation is undeniably a resource

which can be home environment automated.People can control their electrical devices via

these home automation devices and setup controlling actions through mobile.

In future these product may have high potential for marketing.