Recently I am trying to do experiment with wireless communication. one of the easy way to control home lighting is radio frequency module and 2 Arduino board . but there is a one other easy option available to control on and off action of ac device . it’s a Bluetooth shield . here in this tutorial we are going to learn how to control on and off action of ac bulb with Redbearlab Bluetooth low power shield v 2.0 . and android /ios application.