If you're making a circuit that is designed to plug into a breadboard, you have a problem. Those 0.1" header pins are square, and the metal leaf contacts inside a solderless breadboard will eventually...

The Raspberry Pi Camera is a great tool; it allows projects that require a camera to be put together quickly and on a budget. Plus, having a Linux back end for a little processing never hurt anybody. ...

There’s no doubting the popularity of Nixie tubes these days. They lend a retro flair to modern builds and pop up in everything from clocks to weather stations. But they’re not without …

San Francisco’s Millennium Tower is sinking. Since its completion in 2009, the 58-story, 645-foot tall residential building has settled 16 inches and tilted perhaps 2 inches to the northwest. Since…

Just in case you're one of the people out there who still doesn't believe in "the cyber" -- it appears that the Russian military served malicious cell-phone apps to the Ukrainian army that allowed the...

Chances are good that you've already lost some blood to thermoforming, the plastics manufacturing process that turns a flat sheet of material into an unopenable clamshell package, tray inside a box, p...

Tod Kurt knows a thing or two about IoT devices. As the creator of blink(1), he's shipped over 30,000 units that are now out in the wild and in use for custom signaling on everything from compile sta...

The Raspberry Pi Foundation has put a lot of work into their software stack. You need only look at a few of the Allwinnner-based Pi clones for the best evidence of this, but the Pi Foundation's dedica...

In this Instructable, [Wayne Mason-Drust] shares the step by step guide on how to make a cool, good-looking, 3D printer based on the Ikea LACK table. From an Ikea lantern weather station to a fully…

A while ago, [drygol] was asked to repair a few old Amiga keyboards. The key switches worked fine, but in the past decade or two, the flexible PCB ribbon connector has been mistreated, and was in an ...

A frequent complaint you will hear about amateur radio is that it is a chequebook pursuit. Of course you can work the incredible DX if you spend $20k on a high-end radio, big antenna, and associate…

[Moony] thought that it was unconscionable that IR soldering stations sell for a few hundred Euros. After all, they’re nothing more than a glorified halogen lightbulb with a fancy IR-pass fil…

Wars generally increase innovation as the opposing sides try to kill each other in ever more efficient ways. Even the soft war waged daily between felines and their human servants results in innova…

If you really want to hack software, you are going to face a time when you have to take apart someone’s machine code. If you aren’t very organized, it might even be your own — sou…

Old American radios (and we mean really old ones) took several kinds of batteries. The A battery powered the filaments (generally 1.5V at a high current draw). The B battery powered the plate (much…

This is the third and final installment of a series of posts on how to create a PCB in KiCad, and part of an overarching series where I make the same schematic and board in dozens of different soft…

Over the last decade or so, the cost to produce a handful of custom PCBs has dropped through the floor. Now, you don’t have to use software tied to one fab house – all you have to do is…

LaserWeb is open-source laser cutter and engraver software, and [JordsWoodShop] made a video tutorial (embedded below) on how to convert a cheap laser engraver to use it. The laser engraver used in…

Soon the skies will be filled with drones, or so the conventional wisdom goes, and these flying droids will deliver pizza, mail, packages, and medical supplies right to one of the taller trees in our ...

Forth is one of those interesting languages that has a cult-like following. If you’ve never looked into it, its strength is that it is dead simple to put on most CPUs, yet it is very powerful…