The aim and why
The aim was, to make a robot that could avoid walls, and then as something extra let it decide to what side it should steer. it started as a project for IT class. it wasn't finished by the time i showed it, but still got a 8 :D
What do you need? and what are the requirements? you need a arduino you need a Dfrobot motorshield. you need a protoshield(not a requirement, but a breadboard/protoshield comes in handy) you need a URM37 v3.0 ultra sonic sensor. and some kind of carriage, like i used the old chassis of a toy car. and a few servo's
and you need some experience in programming on, and in the arduino programming environmental.
here is where you get the latest arduino IDE: http://arduino.cc/en/Main/Software
i recommend this guy he thought me well :) great tutorial, great build up, and explanation. http://www.youtube.com/watch?v=fCxzA9_kg6s&feature=BFa&list=PLFD13F9C277587F06&index=1
Done by Lcneon