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 ...

A few weeks ago, I installed an automatic water heater switch to my bathroom, but it was a crude device. What I really want to do is design a universal heater driver. That basic idea can be adapted to ...

Experience — or at least education — often makes a big difference to having a successful project. For example, if you didn’t think about it much, you might think it is simple to control the ...

PID control has been in use for a long time in industry, but only for the past few years has it been introduced into environments such as Arduino, with rather concise libraries and no graphical aids.

[Jason] learned a lot by successfully automating this meat smoker. This is just the first step in [Jason’s] smoker project. He decided to begin by hacking a cheaper charcoal-fed unit first, before ...

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 ...