Overview The reasoning for starting this project was two-fold, firstly, its cool being able to turn your lights on and off with your phone. Secondly, I wanted to have an excuse to learn how to make mobile apps for controlling electronics projects. This post will just cover the hardware aspects, and use an already available Android Bluetooth serial app. The creation of a specific app will be covered in a future post once it is done. This was the app I used for getting everything up and running. https://play.google.com/store/apps/details?id=de.kai_morich.serial_bluetooth_terminal&hl=en_NZ&gl=US Electronics The electronics for this project are extremely simple, they just consist of an Arduino nano, an HC-06 Bluetooth module, and a 4 channel relay module. Four bare power outlets with screw terminals are also required to actually plug stuff in, although depending on your application you could just wire whatever device you want to control directly to the relay. The HC-06 m...