As promised, here comes the code, along with the Fritzing file as a schematic view of the whole thing.

Hit the jump for the downloads. No wall of text his time.

Ready to get to the real stuff? In comes the schematics!

All these have been done with Fritzing, a circuit design tool for Arduino users and beginners in general.
While it is still in alpha phase and therefore has quite a few annoying bugs, it is definitely usable and easy to use.

Anyway, here is the breadboard view of the design: