Can a shape pass through itself? That is to say, if one had two identical solids, would it be possible to orient one such that a hole could be cut through it, allowing the other to pass through ...

I must confess that my mouth froze in an O when I saw [Jeff]’s Typeframe PX-88 Portable Computing System, and I continue to ...

Among the many science toys that have fallen out of fashion since we started getting nervous around things like mercury, ...

Today, if you can find a pneumatic tube system at all, it is likely at a bank drive-through. A conversation in the Hackaday ...

Since modern household appliances now have an MCU inside, they often have a diagnostic interface and — sometimes — more. Case ...

We make no claims to be an expert on anything, but we do know that rule number one of working with big, expensive, mission-critical equipment is: Don’t break the big, expensive, ...

Just about every “getting started with microcontrollers” kit, Arduino or otherwise, includes an ultrasonic distance sensor ...

If you are a nerdy kid today, you have your choice of wondrous gadgets and time wasters. When we were nerdy kids, our options were somewhat limited: there was ham radio, or you could blow things ...

Much like calling over a buddy or two to help with moving a large piece of furniture and pivot it up a narrow flight of ...

You know what’s not fun? Sorting LEGO. You know what is fun? Making a machine to sort LEGO! That’s what [LegoSpencer] did, ...

Amiga and Atari fans used to lord over their Apple-eating brethren the fact that Cupertino never moved to the most advanced ...

Changing the pads on your car’s brakes is a pretty straightforward and inexpensive process on most vehicles. However, many ...