Analog dials used to be a pretty common way of displaying information on test equipment and in industrial applications. They ...

Folaefolc] was craving a new keyboard build a few weeks ago and got inspired by the humble 3.5″ floppy disk. So much so that ...

Earlier this year [Skyhawkson] got ahold of a Apollo-era printed circuit board which he believes was used in a NASA test ...

Most RC planes follow a simple control scheme: elevators for pitch, rudder for yaw, and ailerons for roll. This one-to-one ...

What if GPS had existed in 1565? No satellites or microelectronics, sure—but let’s play along. Imagine the bustling streets ...

MindYourDecisions] presents a Babylonian tablet dating back to around 1800 BC that shows that the hypotenuse of a unit square is the square root of two or 1.41421. How did they know that? We ...

It is hard to imagine that there was a time when having a keyboard and screen readily available was a real problem for people ...

Kevin] doesn’t stock zener diodes anymore. Why? Because for everything he used to use zeners, he now uses TL431 bandgap ...

While the Sahara Desert is an important ecosystem in its own right, its human neighbors in the Sahel would like it to stop encroaching on their environment. [Andrew Millison] took a look at how ...

Last time we checked in on [Inkbox], he had made a 16-bit CPU in Excel. Impressive, but not really practical. Presumably, his ...

Flight time remains the Achilles’ heel of electric multi-rotor drones, with even high-end commercial units struggling to stay airborne for an hour. Enter Modovolo, a startup that’s ...

A common part used to create a high voltage is a CRT flyback transformer, having been a ubiquitous junk pile component. So many attempts to use them rely on brute force, with power transistors in ...