A friend of mine is producing a series of HOWTO videos for an open source project, and discovered that he needed a better ...

If you’ve seen a big air-variable capacitor, you may have noticed that some of the plates may have slots cut into them. Why? [Mr Carlson] has the answer in the video below. The short answer: ...

Here we describe an electronic system that uses a dedicated water-level sensor to switch off the pump motor as soon as the ...

What are the best crafting games on PC? It's easy to mix these up with building games as they both involve an element of construction. The critical difference here, though, is that the best crafting ...