This document introduces a home automation project using Arduino Uno and Bluetooth. The project allows controlling lights, air conditioning, and door locks through a smartphone. It discusses getting started with Arduino, connecting it to a computer, and loading a blink example. The block diagram and components used in the project are presented, including an Arduino Uno, Bluetooth module, LED, buzzer, and resistors. The program code receives data from Bluetooth and turns the LED and buzzer on or off based on the received values. A smartphone app is used to control the devices over Bluetooth.

1. Introduction to Arduino
&
Home Automation Using Bluetooth
Prepared By
S.Indumathi AP/ECE, KLNCE
T.D.Preethi Mai Lab Instructor/ECE, KLNCE

2. Evolution of Electronics

3. Topic 1: Meet Arduino Uno

4. Getting Started
• Check out: http://arduino.cc/en/Guide/HomePage
1. Download & install the Arduino environment (IDE)
(not needed in lab)
2. Connect the board to your computer via the USB
cable
3. If needed, install the drivers (not needed in lab)
4. Launch the Arduino IDE
5. Select your board
6. Select your serial port
7. Open the blink example
8. Upload the program

5. Arduino IDE
See: http://arduino.cc/en/Guide/Environment for more information

6. Select Serial Port and Board

8. Input/Output
Image from Theory and Practice of Tangible User Interfaces at UC Berkley

9. Project
Home Automation Using Arduino Uno
• This project is used to control lights, air
conditioning, door locks ,etc through
Smartphone.
• This system uses Bluetooth to connect
with your device and control the various
appliances in your home.

10. Block Diagram

11. Components

12. Program
char data = 0; //Variable for storing received data
void setup()
{
Serial.begin(9600); //Sets the data rate in bits per second (baud) for serial data transmission
pinMode(12, OUTPUT); //Sets digital pin 12 as output pin
pinMode(11, OUTPUT); //Sets digital pin 12 as output pin
}
void loop()
{
if(Serial.available() > 0) // Send data only when you receive data:
{
data = Serial.read(); //Read the incoming data and store it into variable data
Serial.print(data); //Print Value inside data in Serial monitor
Serial.print("n"); //New line
if(data == '1') //Checks whether value of data is equal to 1
digitalWrite(12, HIGH); //If value is 1 then LED turns ON
else if(data == '2') //Checks whether value of data is equal to 0
digitalWrite(12, LOW); //If value is 0 then LED turns OFF
if(data == '3') //Checks whether value of data is equal to 1
digitalWrite(11, HIGH); //If value is 2 then BUZZER turns ON
else if(data == '4') //Checks whether value of data is equal to 0
digitalWrite(11, LOW); //If value is 3 then BUZZER turns OFF
} }

13. Smartphone Bluetooth App

14. Demo

15. Thank You