Many power stations show you remaining battery life on their displays, but that’s only useful once you’ve got everything plugged in.

Your home generator can power plenty of devices, but there are some items you should keep unplugged to avoid damage, overloads, or tripping the system.

Learn how to create a simple DIY electrical generator using a few easy-to-find materials. This step-by-step video guides you through making a homemade generator, including winding a copper coil, ...

If you enter the physical world and open a door—say, to walk into a store—you will intuitively hold the door open if someone is walking behind you and you see them or hear them. Even if you aren’t ...

This two-transistor white noise generator has a surprising feature – about 30dB more noise than the more traditional designs. Q1 and Q2 can be any small-signal transistors with a beta of up to 400.

Hydrogen! It’s a highly flammable gas that seems way too cool to be easy to come by. And yet, it’s actually trivial to make it out of water if you know how. [Maciej Nowak] has shown us how to do just ...

[Debraj] needed a simple signal generator for a project he was working on, but didn’t have one handy. He found that the easiest and cheapest way to get clean, reliable signaling was by using something ...