The Arduino is an amazing piece of technology that can be used to power all kinds of gadgets, often using nothing more than a battery and various components that don’t cost more than a few bucks.

Randy Sarafan, who also happens to be the Technology Editor over on Instructables, gutted a remote-controlled car and swapped the parts for an Arduino ... to make the car follow you around.

There’s hardly a day that passes without an Arduino ... line follower. You’ve probably seen “bang-bang” line followers that just use a photocell to turn the robot one way or the other.