Gear Clock uses a PIC 16F628A microcontroller to keep track of time and a stepper motor to physically move gears to represent time. The gears are made of MDF wood and were cut on a CNC machine. A kit will be made available in January 2010.
Details can be found here:
http://alan-parekh.com/projects/gear-clock
Kits can be found here:
http://alan-parekh.vstore.ca/project-kits-gear-clock-c-1_20.html
