Project Title Arduino Based Home Automation Under the

Project Title Arduino Based Home Automation Under the Guidance of Submitted by

ABSTRACT ØThe main objective of this project is to develop a home automation system with Android application controlled remote. ØRemote controlled home automation system provides a simpler solution with Android application technology. ØRemote operation is achieved by any smart-phone/Tablet etc. , with Android OS, upon a GUI (Graphical User Interface) based touch screen operation.

BLOCK DIAGRAM

HARDWARE REQUIREMENTS ØArduino Duemalinove ØTransformer, Opto-isolator, TRIAC. Ø Voltage Regulator, Crystal. Ø Diodes, Resistors, Capacitors, Lamps , Push Button. Ø Bluetooth Device.

POWER SUPPLY 230 V AC 50 Hz Bridge rectifier 5 v Regulator 5 V DC 12 V step down transformer Filter(470µf)

ARDUINO • The Arduino microcontroller is an easy to use yet powerful single board computer that has gained considerable traction in the hobby and professional market. • The Arduino is open-source, which means hardware is reasonably priced and development software is free.

Image of development board

Features of Duemalinove • The Duemalinove board features an Atmel ATmega 328 microcontroller operating at 5 V with 2 Kb of RAM, 32 Kb of flash memory for storing programs and 1 Kb of EEPROM for storing parameters. • The clock speed is 16 MHz, which translates to about executing about 300, 000 lines of C source code per second

…. . contd • The Arduino programming language is a simplified version of C/C++. If you know C, programming the Arduino will be familiar. • If you do not know C, no need to worry as only a few commands are needed to perform useful functions.

What is called Android. . ? • Android is an open-source operating system which means that any manufacturer can use it in their phones free of charge. • It was built to be truly open. For example, an application call upon any of the phone’s core functionality such as making calls, sending text messages, or using the camera.

……. contd Android is built on the open Linux Kernel. Furthermore, it utilizes a custom virtual machine that was designed to optimize memory and hardware resources in a mobile environment.

What is an android application on mobile phones? • An android app is meant for phones with an android based operating systems. They can be downloaded from the android app Market which is pre-loaded on every android phone. • Blue control APP and Bluetooth Spp APP are some examples.

Android-The world's most powerful mobile platform Very customizable. Open source operating system is easily changed, hacked, manipulated, and molded to fit whatever functionality you had in mind. Found on all platforms for all prices depending on what hardware and software version you are interested in. The battery is usually replaceable.

COMPARISION OF ANDROID WITH OTHER OS ANDROID OS : Android is open source software, manufacturers can modify the operating system to suit their respective needs and phones. This becomes a cheap and feasible alternative for the manufacturer, as opposed to developing an operating system in-house or hiring a software company to do it.

i-OS: It's not available on all carriers but this is expanding. The battery is not replaceable which is why all the I Phone users you know have it plugged in all the time as the battery degrades.

Windows Phone: Windows Phone is a closed-sourced, which means that it is solely developed by the company and protected by copyright. The Windows Store is limited as there only a few number of apps

ANDROID APPLICATION OPERATED BLUETOOTH • The Android platform includes support for the Bluetooth network stack, which allows a device to wirelessly exchange data with other Bluetooth devices. • The application framework provides access to the Bluetooth functionality through the Android Bluetooth APIs.

An example of Android App Blue-control Screen

FEATURES OF BLUETOOTH • Super simple and easy way to interface using Bluetooth stack. • 3. 3 V Device with standard 5 V DC Power source. • Can also support SPI Protocol, pins are made available. • Low power consumption, Low cost. • Has high-performance wireless transceiver system • Can be used to interface with PC, Mac or Android phones/tablets.

• Generic Default Visibility at Software side: HC-06 or Linvor • Default Pairing code is not '0000' but '1234'. • Please use Baud Rate with 8 -N-1 connectivity from other device. • Works with any microcontroller with Serial connectivity.

BC 547 (NPN –Transistor) ØThe BC 547 transistor is an NPN Epitaxial Silicon Transistor. ØIt is used in general-purpose switching and amplification BC 847/BC 547 series 45 V, 100 m. A NPN general-purpose transistors. ØThe ratio of two currents (Ic/Ib) is called the DC Current Gain of the device and is given the symbol of hfe or nowadays Beta, (β).

ØThe current gain from the emitter to the collector terminal, Ic/Ie, is called Alpha, (α), and is a function of the transistor itself

OPTO-ISOLATOR ØOpto-coupler MOC 3061/63 an LED SCR type combination. ØOpto coupler is a 6 pin IC. ØAdditionally while using this IC with microcontroller and one LED can be connected in series with IC LED to indicate when high is given from micro controller such that we can know that current is flowing in internal LED of the opto-IC. Ø When logic high is given current flows through LED from pin 1 to 2. So in this process LED light falls on SCR causing 6 & 4 to close only at the zero cross of the supply voltage.

Contd…. Ø During each half cycle current flows through scr gate, external series resistor and through opto-scr for the main thyristor / triac to trigger for the load at the beginning of the supply cycle always to operate.

Software requirements • Arduino software which can be freely available on Arduino Forum • http: //arduino. cc/en/Guide/Home. Page.

Advantages • Arduino open hardware-simplest programming language • Cost of finding location of the fault reduces • Complexity in finding the fault reduces Disadvantages • Showing limited distance on kit • showing the faults at the 1 KM radius

BIBILOGRAPHY • www. atmel. com • www. beyondlogic. org • www. wikipedia. org • www. howstuffworks. com • www. alldatasheets. com

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