Hackaday.com

An orrery is a beautiful type of mechanical contrivance, built to demonstrate the motion of heavenly objects. LEGO happens to offer just such a device, built using its Technic line …read more

The ancient question of whether or not it’s possible to construct a circle with the same area as a given square using only a drawing compass and straightedge was finally …read more

Imagine a line of affordable toys controlled by the player’s brainwaves. By interpreting biosignals picked up by the dry electroencephalogram (EEG) electrodes in an included headset, the game could infer …read more

Apple AirTags have speakers in them, and the speaker is not entirely under the owner’s control. [Shahram] shows how the speaker of an AirTag can be disabled while keeping the …read more

Although off-the-shelf breadboards are plentiful and cheap, they almost always seem to use the same basic design. Although you can clumsily reassemble most of them by removing the voltage rail …read more

Because size matters when it comes to statistics, [Will Prowse] decided to not just bank on his handful of failed Battle Born LFP batteries when it came to documenting their …read more

With more and more sensors being crammed into the consumer devices that many of us wear every day, the question of where medical devices begin and end, and how they …read more

[GreatScott] has recently been tinkering in the world of radio frequency emissions, going so far as to put their own designs in a proper test chamber to determine whether they …read more

For a long while, digital single-lens reflex (DSLR) cameras were the king of the castle for professional and amateur photography. They brought large sensors, interchangeable lenses, and professional-level viewfinders to …read more

You may not remember [Mr. Wizard], but he was a staple of nerd kids over a few decades, teaching science to kids via the magic of television. The Computer History …read more

Isn’t this glorious? If you don’t recognize what this is right away (or from the post title), it’s an AlphaSmart NEO word processor, repackaged in a 3D-printed typewriter-esque shell, meticulously …read more

Although infrastructure like a 19th-century pumping station generally tends to be quietly decommissioned and demolished, sometimes you get enough people looking at such an object and wondering whether maybe it’d …read more

Once upon a time, the cathode ray tube was pretty much the only type of display you’d find in a consumer television. As the analog broadcast world shifted to digital, …read more

We’re lucky enough in 2026 to have cheap single-board computers fast enough to emulate machines from the 1990s, touching on the 32-bit era. We’ve seen a few projects as a …read more

These days, you can get fakes, bootlegs, and similar for just about anything. While a fake handbag isn’t such a big deal, in the case of a DIN-rail power supply, …read more

We’ve always been interested in fluidic logic and, based on [soiboi’s] videos, he is too. His latest shows how to use silicone and a vacuum to build a multiplexed dot …read more

In the olden days, an administrator password on a BIOS was a mere annoyance, one quickly remedied by powering off the system and pulling its CMOS battery or moving a …read more

It probably won’t come as much of a surprise to find that most of the Hackaday staff aren’t exactly what you’d call sports fanatics, so we won’t judge if you …read more

Back in the 1980s, your options for writing your own code and games were rather more limited than today. This also mostly depended on what home computer you could get …read more

In many places, municipal water from a utility is something that’s often taken for granted. A local government or water utility will employ a water tower or pumping facility to …read more