An earlier version of this automatic gateman system, built around a camera-based design, was published on the Electronics For ...

The Raspberry Pi line of single-board computers can be hooked up with a wide range of compatible cameras. There are a number of first party options, but you don’t have to stick with those—there are ...

Celebrate Pi Day and read about how this number pops up across math and science on our special Pi Day page. For more than two millennia, mathematicians have produced a growing heap of pi equations in ...

For University of Missouri mathematics professor Stephen Montgomery-Smith, Pi is inescapable. “It’s everywhere. I mean I don’t think there’s anybody who doesn’t use Pi somewhere, if you’re a ...

While most in New England may be anticipating March 17, Saint Patrick's Day, there's another more mathematical holiday to celebrate first. Pi Day is celebrated annually on March 14, because its ...

That’s March 14 th, in case you don’t know. What better way to celebrate than with harvesting some Orange Pi, Banana Pi, and Raspberry Pi? When I drew this, I was planning to leave it all black and ...

When it comes to hacks, we’re always amazed by the aesthetic of the design as much as we are by the intricacies of the circuit or the cleverness of the software. We think it’s always fun to assemble ...

Unless you're shooting with pro-level gear, you likely don't need to spend a lot on SD cards. Here's why prices have spiked, which cameras actually demand premium cards, and when you can safely spend ...

This year people in Scientific American’s New York office brought in pies ahead of Pi Day, but we know there must be stranger and more interesting ways to celebrate the iconic number. How have you or ...

As if math wasn't confusing enough, we have Pi to contend with. An irrational number that has no end. It sounds like an easy enough calculation in that it's the ratio of a circle's circumference to ...