Reflective pool of the Court of the Myrtles, looking north towards the Comares Tower. (Credit: Tuxyso, Wikimedia)

Medieval Alhambra’s Pulser Pump And Other Aquatic Marvels

March 30, 2026 by Maya Posch 1 Comment

Recently the Practical Engineering YouTube channel featured a functional recreation of a pump design that is presumed by some to have been used to pump water up to the medieval Alhambra palace and its fortress, located in what is today Spain. This so-called pulser pump design is notable for not featuring any moving parts, but the water pump was just one of many fascinating engineering achievements that made the Alhambra a truly unique place before the ravages of time had their way with it.

Although the engineering works were said to still have been functional in the 18th century, this pumping system and many other elements that existed at the peak of its existence had already vanished by the 19th century for a number of reasons. During this century a Spanish engineering professor, Cáceres, tried to reconstruct the mechanism as best as he could based on the left-over descriptions, but sadly we’ll likely never know for certain that it is what existed there.

Similarly, the speculated time-based fountain in the Court of the Lions and other elements are now forever lost to time, but we have plenty of theories on how all of this worked in a pre-industrial era.

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Hackaday Links: March 29, 2026

March 29, 2026 by Tom Nardi 8 Comments

Whether it’s a new couch or a rare piece of hardware picked up on eBay, we all know what it feels like to eagerly await a delivery truck. But the CERN researchers involved in a delivery earlier this week weren’t transporting anyone’s Amazon Prime packages, they were hauling antimatter.

Moving antimatter, specifically antiprotons, via trucks might seem a bit ridiculous. But ultimately CERN wants to transfer samples between various European laboratories, and that means they need a practical and reliable way of getting the temperamental stuff from point A to B. To demonstrate this capability, the researchers loaded a truck with 92 antiprotons and drove it around for 30 minutes. Of course, you can’t just put antiprotons in a cardboard box, the experiment utilized a cryogenically cooled magnetic containment unit that they hope will eventually be able to keep antimatter from rudely annihilating itself on trips lasting as long as 8 hours.

Speaking of deliveries, anyone building a new computer should be careful when ordering components. Shady companies are looking to capitalize on the currently sky high prices of solid-state drives by counterfeiting popular models, and according to the Japanese site AKIBA PC Hotline, there are some examples in the wild that would fool all but the most advanced users. They examine a bootleg drive that’s a nearly identical replica of the Samsung 990 PRO — the unit and its packaging are basically a mirror image of the real deal, the stated capacity appears valid, and it even exhibits similar performance when put through a basic benchmark test.

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For Art’s Sake

March 28, 2026 by Elliot Williams 12 Comments

Hackers can be a strange folk. Our idea of beauty, for instance, can be rather odd. This week, Hackaday saw a few projects that were not just functional – the aesthetics were the goal. I don’t think we’ll be taking over the fine art world any time soon, but I’m absolutely convinced that the same muse that guides the hand that holds the paintbrush sometimes also guides the hand holding the soldering iron.

Take “circuit sculpture”, for instance. Heck, we even give it an art-inspired name that classifies it correctly. This week’s project that got me thinking about the aesthetics of hand-bent wire circuits was this marvelous clock build, but the works of Mohit Bhoite or Kelly Heaton are also absolute must-sees in this category.

Outside of the Hackaday orbit, one of my all-time favorite artists in this genre was Peter Vogel, who made complex audience-reactive sound sculptures that looked as good as they sound.

Is a wireframe animated moving jellyfish art? It was certainly intended to be beautiful, and I personally find it so. Watch some of the video clips attached to the project to get a better sense of it.

In the sculpture world, there is a sub-genre of kinetic art pieces where the work itself is secondary to the beauty of the motions that the pieces pull off. Think ballet, but mechanical. Perhaps my absolute favorite of these artists is Arthur Ganson. If you haven’t seen his work before, check out “Thinking Chair” for the beauty of movement, but don’t miss “Machine with Concrete” if you’re feeling more conceptual.

If you’re willing to buy an insane geartrain as art, what about these 3D printed wire strippers? Is this “art”? It’s clear that they were designed with real intent and attention to the aesthetics of the final form, and am I wrong for finding the way they move literally beautiful?

What’s your favorite offbeat hacker artform?

Hackaday Podcast Episode 363: The History Of PLA, Laser DIY PCBs, And Corporate Craziness

March 27, 2026 by Al Williams 9 Comments

What did Elliot Williams and Al Williams read on Hackaday last week? Tune in and find out. After a bit of news, [Vik Oliver] chimes in with some deep PLA knowledge. Then the topic changed to pressure advance measurements, SDRs, making super-resolution PCBs with a fiber laser, and more.

Want to 3D print wire strippers? A robot arm? Or just make your own Z-80? Those hacks are in there, too.

For the long articles, we talked about old tech, including the :CueCat and the Iomega Zip Drive. Let us know if you had either one in the comments.

What do you think? Leave us a comment or record something and send it to our mailbag.

Download a copy of the podcast with no corporate trackers in the clean MP3.

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This Week In Security: Second Verse, Worse Than The First

March 27, 2026 by Mike Kershaw 16 Comments

Isn’t there some claim events come in threes? After the extremely rare leak of the iOS Coruna exploit chain recently, now we have details from Google on a second significant exploit in the wild, dubbed Darksword.

Like Coruna, Darksword appears to have followed the path of government security contractors, to different government actors, to crypto stealer. It appears to focus on exploits already fixed in modern iOS releases, with most affecting iOS 18 and all patched by iOS 26.3.

Going from almost no public examples of modern iOS exploits to two in as many weeks is wild, so if mobile device security is of interest, be sure to check out the Google write-up.

Another FBI Router Warning

The second too early to be retro – but too important to ignore – repeat security item is a second alert by the FBI cautioning about end-of-life consumer network hardware under active exploitation, with the FBI tracking almost 400,000 device infections so far.

Like the warning two weeks ago, the FBI calls out a handful of consumer routers – but this time they’re devices that may actually still be service in some of our homes (or our less cutting edge friends and family), calling out devices from Netgear, TP-Link, D-Link, and Zyxel:

Netgear DGN2200v4 and AC1900 R700
TP-Link Archer C20, TL-WR840N, TL-WR849N, and WR841N
D-Link DIR-818LW, 850L, and 860L
Zyxel EMG6726-B10A, VMG1312-B10D, VMG1312-T20B, VMG3925-B10A, VMG3925-B10C, VMG4825-B10A, VMG4927-B50A, VMG8825-T50K

While many of these devices are over ten years old, they still support modern networking – some of them even supporting 802.11ac (also called Wi-Fi 5). Unfortunately, since support has been ended by the manufacturers, publicly disclosed vulnerabilities have not been patched (and now never will be, officially) Continue reading “This Week In Security: Second Verse, Worse Than The First” →

FLOSS Weekly Episode 867: Pangolin: People Can Lie

March 25, 2026 by Jonathan Bennett No comments

This week Jonathan chats with Milo Schwartz about Pangolin, the Open Source tunneling solution. Why do we need something other than Wireguard, and how does Pangolin fix IoT and IT problems? And most importantly, how do you run your own self-hosted Pangolin install? Watch to find out!

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Retail Fail: The :CueCat Disaster

March 25, 2026 by Al Williams 66 Comments

Digital Convergence Corporation is hardly a household name, and there’s a good reason for that. However, it raised about $185 million in investments around the year 2000 from companies such as Coca-Cola, Radio Shack, GE, E. W. Scripps, and the media giant Belo Corporation. So what did all these companies want, and why didn’t it catch on? If you are old enough, you might remember the :CueCat, but you probably thought it was Radio Shack’s disaster. They were simply investors.

The Big Idea

The :CueCat was a barcode scanner that, usually, plugged into a PC’s keyboard port (in those days, that was normally a PS/2 port). A special cable, often called a wedge, was like a Y-cable, allowing you to use your keyboard and the scanner on the same port. The scanner looked like a cat, of course.

However, the :CueCat was not just a generic barcode scanner. It was made to only scan “cues” which were to appear in catalogs, newspapers, and other publications. The idea was that you’d see something in an ad or a catalog, rush to your computer to scan the barcode, and be transported to the retailer’s website to learn more and complete the purchase.

The software could also listen using your sound card for special audio codes that would play on radio or TV commercials and then automatically pop up the associated webpage. So, a piece of software that was reading your keyboard, listening to your room audio at all times, and could inject keystrokes into your computer. What could go wrong?

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