Raspberry Pi based energy management system

In this research we are presenting a system which addresses the energy wastage arising from carelessness and negligence by a person when he leaves his house without turning off all the unnecessary appliances. The proposed system uses the Bluetooth communication in the user's phone to determine whether the user is at home or not. It is not necessary for the user's phone to be in discoverable mode for its functionality, it should be just turned on. When a user is out of reach for a certain duration, the system immediately turns off unnecessary devices such as lights and fans. Multiple Bluetooth devices can also be used in case of multiple users. The user can control the appliances manually through switches when at home.