The magenetic clock

Link to the wiring and code: http://www.thingiverse.com/thing:1545926/#files
Link of my partner: http://www.thingiverse.com/CCCCCCChristy/about

We designed this clock together. The servo will help make the big gear turn for 180 degrees and then the big gear help the small gear turn for 360 degrees. The indicator is attached to the small gear, we uses the power of magnet to make the little metal ball walk on the surface of the clock.