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.

The robot uses a whopping 32 IR sensors to follow a black line across a concrete workshop floor, adjusting its path using a steering motor salvaged from a power wheelchair. An Arduino Mega Pro ...

The little robot, about half the size of a small egg, whirs along on invisible wheels, using a camera on its base to follow any line it's put on. When it meets a branching path, it picks one randomly.

Arduino's array of inputs and outputs proves crucial in projects from building robots to 3D printers, said Jason Kridner, co-creator of the BeagleBone line of ... bulk of the robot, made mostly ...