I have never used the avr and admit it might be a better way to go, But the basic stamp made by parallax has a built in command for PULSIN, and can be used for what your wanting. I have seen it done in a rc car, where they programmed it to create throttle control(rev limiting?) ithink to cap the top speed during competition so they could compete in two different class's with the same car. i'm not sure how simple you want it but no matter what processor you choose you will haft to do a little programming /code writing, if you have never used a microcomputer before i think the parallax chip would be easiest but again thats an assumption in comparing the avr. also the car i was talking about used to be on the tower hobbie's website. they hada track out here on glisan street. pretty cool stuff...
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