Smart LED Window
A fake window, powered by LED strip lights, controlled by a Raspberry Pi
Like most basements, mine was dark with only a couple tiny windows letting in almost no light. In order to brighten it up and make it feel a little less claustrophobic, I created a fake window to let in some natural-looking light.
The window is contollable via web interface. The LED strip brightness can be manually, or automatically set according to sunset/sunrise times and the weather pulled from the Yahoo! API. If it's sunny, the window is bright, if it's cloudy, the window is more dim. It fades on at sunrise, and fades off at sunset.
Check out the Instructable article for the full how-to!