smart home automation system
- 1. Smart Home Automation System Prepared by : 1. Jabed Hosen Saddam 2. Md Saifuddin Quader. Supervised By : Md. Shahadat Hossain Assistant Professor Department of EEE, FSET, USTC
- 2. Acknowledgement We would like to express my special thanks of gratitude to our Supervisor Md. Shahadat Hossain who gave us the golden opportunity to do this wonderful project on the topic Smart Home Automation , which also helped us in doing a lot of Research and we came to know about so many new things. We are really thankful to them. Secondly We would also like to thank our friends who helped us a lot in finishing this project we within the limited time. We are making this project not only for marks but to also increase our knowledge. THANKS AGAIN TO ALL WHO HELPED US.
- 3. Index • Introduction to the Project • Block Diagram • Hardware Required • Process of Making Dc 9v Power Supply • Process of Making Relay Circuit • Software used • Advantages • Disadvantages • References
- 4. Introduction There is an increasing demand for smart homes, where appliances react automatically to changing environmental conditions and can be easily controlled through one common device. This project presents a possible solution whereby the user controls devices by using their existing mobile phone ,where control is communicated to the Arduino from a mobile phone through its Bluetooth interface.
- 6. Hardware Arduino Uno HC-05 Bluetooth Module 5v Relay Transformer – 24v(step down) Voltage regulator 7809 Diode Capacitor Resistor 1k ohm Batten Holder Led bulb Jumper wire Tube light 12v Fan 220v Light 220v Socket box 220v Dc power supply Ac power supply wire
- 7. Arduino Uno Arduino Uno is a microcontroller board based on 8-bit ATmega328P microcontroller. Along with ATmega328P, it consists other components such as crystal oscillator, serial communication, voltage regulator, etc. to support the microcontroller. Arduino Uno has 14 digital input/output pins (out of which 6 can be used as PWM outputs), 6 analog input pins, a USB connection, A Power barrel jack, an ICSP header and a reset button.
- 8. HC-05 Bluetooth Module Wireless communication is swiftly replacing the wired connection when it comes to electronics and communication. Designed to replace cable connections HC-05 uses serial communication to communicate with the electronics. Usually, it is used to connect small devices like mobile phones using a short-range wireless connection to exchange files. It uses the 2.45GHz frequency band. The transfer rate of the data can vary up to 1Mbps and is in range of 10 meters. The HC-05 module can be operated within 4-6V of power supply. It supports baud rate of 9600, 19200, 38400, 57600, etc. Most importantly it can be operated in Master-Slave mode which means it will neither send or receive data from external sources.
- 9. Relay A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits as amplifiers: they repeated the signal coming in from one circuit and re-transmitted it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations.
- 10. Voltage Regulator 7809 Ic 7809 Voltage regulator is a type of self-contained fixed linear voltage regulator integrated circuit. The IC belongs to 78xx voltage regulator family which is commonly used as the regulated power supply in electronic circuits The IC 7809 is not as popular as ic 7805. The 7809 voltage regulator IC is ease-of-use and available in very low cost. The last two digits of 7809 indicates the output voltage that is voltage.
- 11. Dc 9v ircuit Diagram 230v to 24v 2200 µF 7809 9v
- 12. Process of Making Dc 9v Power Supply Circuit Connections: The circuit is built in stages with every stage aimed for a specific purpose. For stepping down the 230 V AC, a 12V – 0 -12V transformer is taken. The terminals of the secondary coil of the transformer are connected with a full-bridge rectifier and a wire is drawn from the center tape of the transformer to serve as common ground. The full bridge rectifier is built by connecting four 1N4007 diodes to each other designated as D1, D2, D3 and D4 in the schematics. The cathode of D1 and anode of D2 is connected to one of the secondary coil and cathodes of D3 and anode of D4 is connected to the other terminal of the coil. The cathodes of D2 and D4 are connected from which one terminal is taken out from output of rectifier and anodes of D1 and D3 are connected from which other terminal is taken out from output from full-wave rectifier. The capacitors of 2200 µF(C) is connected the output terminals of a full-wave rectifier for smoothing purpose. For voltage regulation LM-7809 is connected in parallel to the smoothing capacitors. The output is drawn from the voltage output terminals of the regulator IC. The capacitors of 2200 µF is connected to the output terminals of the power circuit to compensate transient currents.
- 14. Process of Making Relay Circuit We will first go over how to build a relay driver circuit for relays which operate from DC power. To drive a DC relay, all we need is sufficient DC voltage which the relay is rated for. All relays come with a voltage rating. This is called on a relay's datasheet its rated coil voltage. This is the voltage needed in order for the relay to be able to operate and be able to open or close its switch in a circuit. In order for a relay to function, it must receive this voltage at its coil terminals. Thus, if a relay has a rated voltage of 9VDC, it must receive 9 volts of DC voltage to operate. So the most important thing a DC relay needs is its rated DC voltage. If you don't know this, look up what relay you have and look up its datasheet and check for this specification. A relay driver circuit is a circuit which can drive, or operate, a relay so that it can function appropriately in a circuit. The driven relay can then operate as a switch in the circuit which can open or close, according to the needs of the circuit and its operation. In this project, we will build a relay driver for both DC and AC relays. Since DC and AC voltages operate differently, to build relay drivers for them requires slightly different setup. We will also go over a generic relay driver which can operate from either AC or DC voltage and operate both AC and DC relays. All the circuits are relatively simple to understand.
- 15. Use of Software Programs written using Arduino Software (IDE) are called sketches. These sketches are written in the text editor and are saved with the file extension .ino. The editor has features for cutting/pasting and for searching/replacing text. The message area gives feedback while saving and exporting and also displays errors. The console displays text output by the Arduino Software (IDE), including complete error messages and other information. The bottom right-hand corner of the window displays the configured board and serial port. The toolbar buttons allow you to verify and upload programs, create, open, and save sketches, and open the serial monitor. The Arduino IDE supports the languages C and C++ using special rules of code structuring. The Arduino IDE supplies a software library from the Wiring project, which provides many common input and output procedures. User-written code only requires two basic functions, for starting the sketch and the main program loop, that are compiled and linked with a program.
- 16. Bluetooth Application Arduino Bluetooth Control is an application that allows you to control your arduino board (and similar boards) via Bluetooth, and so to create awesome and fully customized projects, with the new features available within the app. The settings section allows you to adapt the application to your needs, through a very simple and intuitive interface. The application also smartly remembers your Bluetooth module and will always try to connect automatically to the latest one you have used, so you won't have to select it every time you use it. Buttons and slider In portrait orientation, this tool provides 6 buttons fully customized, that will allow you to send specific data when pressed. When you rotate your device, a slider view shows up , to which you can set the range of the data to be sent.
- 17. Benefits of Smart home automation Managing all of your home devices from one place. Flexibility for new devices and appliances. Maximizing home security. Remote control of home functions. Increased energy efficiency. Improved appliance functionality. Smart homes can also help you run your appliances better Home management insights. Home automation Saves money Home automation keeps your family comfortable. Effortless functions Large community
- 18. Limitations of Home automation Human errors Reliability Equipment and installation cost
- 19. Future work •This setup can further be developed into IOT project by using Ethernet arduino and a Wi-Fi module. •So, it can be controlled from anywhere around the globe having feedback from the devices to further improve the energy savings.
- 20. CONCLUSION The system as the name indicates, ‘Home automation’makes the system more flexible and provides attractive user interface compared to other home automation systems. In this system we integrate mobile devices into home automation systems. A novel architecture for a home automation system is proposed using the relatively new communication technologies. The system consists of mainly three components is a BLUETOOTH module, Arduino microcontroller and relay circuits. WIFI is used as the communication channel between android phone and the Arduino microcontroller. We hide the complexity of the notions involved in the home automation system by including them into a simple, but comprehensive set of related concepts. This simplification is needed to fit as much of the functionality on the limited space offered by a mobile device’s display. This paper proposes a low cost, secure, ubiquitously accessible, auto-configurable, remotely controlled solution.
- 21. Question?
- 22. Thank you for providing us this opportunity