It contains 21 blue LEDs controlled by an Atmega8.
I wrote a simple Soft 8-Bit-PWM that controls every single LED.
The battery case contains an old Nokia Mobile Battery. I think it will glow about 20 hours or so.
It was a nice try what you can do easily with a RepRap, I actually think a will not wear it, because it's very uncomfortable. So I prefer my Painted Shirts.
If you are interested in the schematics, Programm Code or 3D files contact me.
Here is the package with the code, 3d files and the layout:
Dieses Werk bzw. Inhalt steht unter einer Creative Commons Namensnennung-Nicht-kommerziell 3.0 Unported Lizenz