[Paul] created a frame that uses an Arduino and LEDs to create a slow motion illusion of a delicate item (like a flower or a feather). The effect is striking as you can see in the video below. [Pau…

One of the most famous lectures in the history of technology was delivered by [Douglas Engelbart] in December 1968, at a San Francisco conference. In it he described for the first time most of what w...

A milliohm meter is a very handy piece of test equipment. Most hand-held multimeters cannot measure low resistances and bench meters that can, are usually quite expensive. [barbouri] has shared det…

If you stuff a computer into a rack with a bunch of other machines, you'd better make it a tough machine. Server-grade means something, so using server parts in a project, like this high-wattage power...

[Wisecracker] likes how the Amazon Echo Dot works, but he doesn't like how they sound or how they resemble hockey pucks. A little 3D printing, though, and he transformed the Dot into a credible Death ...

When we take a new Wi-Fi router from its box, the stock antenna is a short plastic stub with a reverse SMA plug on one end. More recent and more fancy routers have more than one such antenna for cl…

Modern quadcopter flight controllers perform a delicate dance of balancing pitch, yaw, bank, and throttle. They can do this thanks to modern MEMS gyros and accelerometers. The job is easy when the mot...

Wood may seem like a soft, weak material if you're used to working with steel, but to do good work, you'll quickly learn you need your tools sharp. Buying and maintaining a good set of tools can be ex...

The phrase “Tesla vs. Edison” conjures up images of battling titans, mad scientists, from a bygone age. We can easily picture the two of them facing off, backed by glowing corona with l…

[Emilio Ficara] [built himself an Internet-connected MQTT multimeter](http://ficara.altervista.org/) (translated from Italian by robots). Or maybe we should say that [Emilio Ficara] undertook a long s...

What the heck is CircuitPython? Get that question answered along with many more during this Friday’s Hack Chat. Three engineers from Adafruit join us as [Ladyada], [Tony DiCola], and [Scott S…

Some years back, a museum asked me to help them with an exhibit a contractor had built for them. It was a wheel like the one on Wheel of Fortune, but smaller and mounted on the wall instead of the …

Commodity electronics manufacturing is a tough game. If you come out with a world-beating product, like WorldSemi did with the WS2812B addressable RGB LED “pixel”, you can be pretty sur…

There are many uses for an old 10 Mbps Ethernet hub besides using it as a speed-bump in your network. (No fun in that!) [thinkerzone] decided to gut an old EN104 Bay Networks 'Netgear Hub' to re-purpo...

It would be nice if your 3D printer could spit out PC boards. There's been lots of work done to make that happen, mostly centered on depositing conductive material, although we've been surprised no on...

We’ve featured quite a few of [mitxela]’s projects here in the past, and many of them have the propensity to be labelled “smallest”. His Morse Code USB Keyboard Mk II adds t…

From the look of it sitting on his bench, you'd never guess that [3nz01]'s power supply was actually a couple of el-cheapo modules from eBay, but now we all know the dirty truth.

Re-using or re-pur...

[Bjørn Karmann]’s Objectifier is a device that lets you control domestic objects by allowing them to respond to unique actions or behaviour, using machine learning and computer vision. The Ob…

World War I began in 1914 as a fight among several European nations, while the United States pursued a policy of non-intervention. In fact, Woodrow Wilson was reelected President largely because &#…

If you haven’t gone laptop shopping recently, you’re in for a big shock when you do. While the current generation of MacBook Pros is rightly torn to shreds for being an overpriced machi…

There are certain design guidelines for PCBs that don’t make a lot of sense, and practices that seem excessive and unnecessary. Often these are motivated by the black magic that is RF transmi…