Challenge 2

I feel that that as opposed to challenge one, the focus of this challenge is more on the programming of the robot. So far, I have almost completed building my robot, but still need to construct the program. I know that I will need a light sensor to count the lines, but I am not sure how I am going to program it. I think I will have the robot run while counting lines, and then somehow stop once it has not found a line for 15cm. I am looking forward to this challenge and hope to come up with some ideas for the programming part of it tonight.