Betsy, New York asked Kristina Lawyer, Argonne National Laboratory

AddedWednesday, March 28, 2012 at 7:28 AM

I have a question for anyone w...
I have a question for anyone who can answer it- I'm trying to build a robotic cart- basically, a cart that i can sit on and steer. I'm kind of new to engineering, but it really interests me, and I've built robots in school (little ones from legos, but still), but nothing this big. Anyway, I've run into a problem... How would I make it turn? I had the idea of attaching the two front wheels to different pedals (the things I would push to make it go). So, for example, if I wanted to turn left, I would push on the left pedal. If I wanted to go straight, obviously push both. Other than this idea, I'm not really sure what to do. And how would I do this? Any help would be awesome! Thanks for your time! -Betsy
  • Kristina Lawyer , Argonne National Laboratory
    Answered Wednesday, March 28, 2012 at 7:28 AM
    Betsy, What an interesting project! Your dual pedal idea would certainly work, and would probably be the easiest system to build and use. If youre looking for something else, you could try to implement what a car uses to turn a rack and pinion. If you want to know more about a rack and pinion, read these: and But I must mention that you should be very careful with this project, for obvious reasons. If youre riding this cart and a component breaks, you could easily get hurt. So, keep that in mind, and take extra care (double and triple check everything!) when building the cart. Good luck!