so, I am using Arduino Nano for this home automation project. and a Bluetooth module for controlling the home appliances using smart phone. the relay is used to turn O/OFF the mains(230 v) by using 5 v control signal form Arduino Nano through a transistor. the PIR motion sensor is used to detect the motion and turn ON/OFF the particular home appliance that we are often use when we enter into a room. say eg: light, fan, TV etc... the DHT 11 temperature and humidity sensor is used to display the temperature and humidity in the smart phone for indication purpose.
so this project is made up of two parts:
1.controlling through smart phone.
2.ON/OFF using motion detecting sensor.
soon I will upload any other components to be added in this project.