Let's Make Robots!

tri stating

push-pull tri-state motor driver

I am working on a small bot that will use 1.5v pager motors and run from 2 AAA batteries.  The brains will be an 8 pin PIC. So I am looking for ways to conserve pins as much as possible.  I have been inspired by the Y bridge  and tri-stating work that I have seen here, but I am really aggressivly trying to reduce the part count on this bot.