I'm looking to build an Arduino that is capable of following a line depending on a colored strip on the ground, either black or white. I think I might use a LDR, but not quite sure where to even start to be honest. My office is having an Arduino contest, and I just want the Arduino to carry paper from the printer to a desk by following a path. Basically I'm thinking of this: Arduino reads sensor, if sensor comes back as less 0, then Arduino stays stationary, if comes back with 1, then Arduino turns on motor. Here's the tricky part, I want it to curve around corners but have no idea where I would even begin, probably by connecting two servo motors so that one rotates faster than the other and it turns? Thanks, if anyone knows of any tutorials or anything online, I would love to look at them. I am fairly new, so some of the tutorials I've looked at have had me kind of stumped.