The robot carries a row of light sensors across its front. From their readings it estimates where the black line lies relative to the center of the array. I call that ...

Arduino PID Line Follower — Two Approaches A tutorial for anyone learning to build a PID line-following robot, a classic entry point into self-driving control. It covers two control approaches that go ...

Line Followers are a tried-and-true type of robot; both hardware and software need to be doing their job in harmony in order to be successful at a clearly defined physical task. But robots don’t ...

Sometimes a coworker sees something on your desk, and they have to ask, “Where can I get one of those?” and that has to be one of the greatest compliments to a maker. [Greg Zumwalt] nailed it with his ...