This light has a charge-type battery built-in.
This is a little video showing the Illuminato controlling an 8×8 orange/green/red LED matrix directly from its digital I/O pins (no 595 IO expanders!). The Illuminato is open source hardware, released under the GNU GPL at http://www.liquidware.com/wikipages/name/Illuminato and http://www.liquidware.com/shop/show/ILL/Illuminato
LED Liquid Lightbulb.
Ever wanted to have one of those big scrolling LED displays, to keep you up to date on e-mails, news, weather, or stock quotes?
Every key on this keyboard can light up the entire rainbow! Set up a pretty display, or highlight important keys for specific tasks. It’s totally programmable! thinkgeek.com
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