Home Electrical appliance control over Bluetooth using hand gesture (Drawing) from android devices

An android Phone/Tablet running an application sends an ASCII character specific to a particular type of drawing recognized by the app. This character is sent via Bluetooth to the microcontroller which controls the appliances. When the microcontroller receives the character, it determines which appliance to turn ON or OFF, based on its programming. Moreover it also sends the command to the music player, through the serial UART port, which is controlled by another microcontroller to Play/Pause a song or Skip to the Next or Previous song.