Not that expensive, probably about $2.00 for what you need. but you would need to build a programmer too. (not that expensive if you build a JDM) If you ever get interested in PICs http://members.cox.net/sonjarob/TUTs/uP4Idiots.html is a good tutorial. BTW the mechanism looks good. Are you going to have it kind of spring to between 3rd and 4th like the knobs kind of do in cars?
Ah thats nothing then I will look in to that! Sorry I dont quite get what you mean about springing between 3rd and 4th though? at_mosby Its pitch black outside now, but I can get you a photo tomorrow. You looking at buying one?