Android App to control home lights using Arduino nano and relay board,trough this app two
light and one fan can be control .
Install this app pair your BT HC-05 with android phone, search for your Bluetooth module and connect. Once it is connected it will show "BT connected" you will able to control your lights and fan.Tap "ON" to on device and "OFF" to switch off the device.
Hardware
1)HC-05
2)Arduino
3)Relay board
Bluetooth arduino controller for home automation version 2