Semitone Open Dimmer Project
Semitone Dimmers = comfortable standalone digital light dimmers for home use
Status updates at http://open-innovation-projects.org/projects/show/54/semitone-dimmers
"The aim of this project is the development of comfortable standalone digital light dimmers for home use, which are inexpensive, easy to build, yet very feature-rich and highly configurable.
All development details, such as the microcontroller operating systems (firmware), schematics, and documentation, are freely available under the GNU General Public License (GPL), version 2.
This project was founded on May 1, 2003."