Originally Posted by BrianG

Last year, I was looking around Craigslist and such for a cheap power wheels with a bad motor or something but everything was over $50-60. I wanted to do something similar, except use 5s and a sensored setup (for smoother takeoffs). I also wanted to add a way to mechanically disconnect the steering and pedals so that when I drive it remotely and my kid is in it, she won't fight against it.

Since I couldn't find a cheap donor, the project was scrapped. Ideally, I'd like to get something a little more durable with proper suspension and everything; something like a mini-ATV.

I was going to post on the Trx link, but my old user/pass doesn't seem to work. The poster mentions using a microcontroller, which is fine, but I think a modded servo tester (replace the tester's pot with the pedal's pot) would be easier. Or, use a 556 timer IC with the appropriate timing components.