[Al Skierkiewicz]

I think the Basic Stamp listed in an earlier post will be your best bet on weight/size and ease of use. You may need to add a couple of high current drivers to feed the servos but there is a product that is designed with a 9 volt battery clip and a little proto typing circuit area on board. Check out the Parallax website for all their products. Digikey is an outlet for this line and a variety of sensors. If you think you can get away with just an accurae timer, there is a program for that purpose already written for the Basic Stamp.