ledlamp
LED(Lamp) is an advanced bluetooth lighting system made with arduino, has been realized using a very cheap bluetooth module.
The cool part is the control app for Android device that allows you to control the lighting system.
The firmware for Arduino is open source. The app for android offers: brightness control, color, 8 memories, save favorite color on start.
You can find more on the official [website]
[original story: Arduino Blog]