Make a mood lamp and change the lighting on a bunch of RGB LEDs with the Tah RGB app! Set up RGB LEDs in any pattern you like and connect them to the Tah. You can then use your phone to have the LEDs light up according to the colours of your choice or cycle through the selected colours in a rainbow mode.
This app requires a Tah connected to your computer. Tah is an open source BLE development board that is compatible with the Arduino. Get yours here: http://tah.io/get. For more information, please check out our website.