I used the PIC 12F675, because it's small and was basically made for time based applications. The hole idea of this project was to use parts I already had. Though it would be nice to add a new temperature detecting feature so if it does get warm the fan would turn on by it's self, but with little time I didn't get the chance.
If you look at the video this is how to use it:
Key Parts and Tools I Used I Couldn't Do Without:
PIC Kit 1
Great Cow Basic
5v Voltage Regulator
(FAN) Shuttle, Model: AD0912UX-A7BGL
Thanks for reading!