Mood light? Night light? Party light? This project could be any of these things, but I think the coolest thing it can do is make rad 3D-ish, multi-color shadow art.
This idea came from the Trippy Night Light
published in Make by Charles Platt and the "Trippy RGB Color Mixing Night Light"
It uses pulse width modulation to "randomly" "fade" the intensity of a red, a green and a blue LED so that they mix in endless combinations of colors.
I'd like to point out that you can get similar color changing functionality at about one-fifth of the cost and one-tenth the work by simply using one RGB Slowchanging LED
. But you couldn't customize the program, it wouldn't be as bright, and you wouldn't get any cool shadow effects. What fun would that be?
The shadow picture was made seconds after I successfully powered the project straight from my laptop. I pointed the light at the ceiling and discovered a 10-ft wide psychedelic light show!