I've seen this style of fabric-draped, muted-light lamp all over new york recently. I decided to build my own, and make it glow funny colors.
The schematic is really simple; I wanted to keep it that way. A PIC16 is used to create three PWM signals. Those three signals feed into three NPN transistors to drive a stack of colored LEDs. I proper design would use resistors both at the base and the emitter, but I was lazy last night.
Also, this thing has source code.
Tryin' to keep it simple. I put it on some perf board, and wire wrapped it. I tried to space the LEDs evenly on both sides of the board. The obverse:
And the reverse.
Then, I made a frame out of two coat hangers. I wrapped them with some packaging material from my new job's recent Ikea visit, and sewed it on.
It starts to look a little bit better as more sewing is done.
Finally, it looks like this in the dark: