TechyMagThings

What hardware hacker doesn’t have a soft spot for transparent cases? While they may have fallen out of mainstream favor, they have an undeniable appeal to anyone with an interest in electronic or mechanical devices. Which is why the Orbigator built by [wyojustin] stands out among similar desktop orbital trackers we’ve seen.

Conceptually, it’s very similar to the International Space Station tracking lamp that [Will Dana] built in 2025. In fact, [wyojustin] cites it specifically as one of the inspirations for this project. But unlike that build, which saw a small model of the ISS moving across the surface of the globe, a transparent globe is rotated around the internal mechanism. This not only looks gorgeous, but solves a key problem in [Will]’s design — that is, there’s no trailing servo wiring that needs to be kept track of.

For anyone who wants an Orbigator of their own, [wyojustin] has done a fantastic job of documenting the hardware and software aspects of the build, and all the relevant files are available in the project’s GitHub repository.

The 3D printable components have been created with OpenSCAD, the firmware responsible for calculating the current position of the ISS on the Raspberry Pi Pico 2 is written in MicroPython, and the PCB was designed in KiCad. Incidentally, we noticed that Hackaday alum [Anool Mahidharia] appears to have been lending a hand with the board design.

As much as we love these polished orbital trackers, we’ve seen far more approachable builds if you don’t need something so elaborate. If you’re more interested in keeping an eye out for planes and can get your hands on a pan-and-tilt security camera, it’s even easier.

While it might not be comprehensive, [Bret.dk] recently posted a retrospective titled “Every Single Board Computer I Tested in 2025.” The post covers 15 boards from 8 different companies. The cheapest board was $42, but the high-end topped out at $590.

We like the structure of the post. The boards are grouped in an under $50 category, another group for $50-100, and a final group for everything north of $100. Then there’s some analysis of what RAM prices are doing to the market, and commentary about CIX P1, Qualcomm, RISC-V, and more.

You get the idea that the post is only summarizing experiences with each board, and, for the intended purpose, that’s probably a good thing. On the other hand, many of the boards have full reviews linked, so be sure to check them out if you want more details. The Arduino Q didn’t fare well in review, nor did the BeagleBoard Green Eco. But the surprise was newcomer CIX. Their SoC powers two entries, one from Radaxa and the other from Orange Pi. In both cases, the performance of these was surprisingly good. There are some concerns with tooling and a few hiccups with things like power consumption, but if those were fixed, the CIX chips could be showing up more often.

[Bret’s] post is very informative. We’d be interested to hear whether you disagree with any of his assessments or have a favorite SBC that didn’t make his list. Let us know in the comments. Of course, there are other boards out there, but you can see that development tools and support often differentiate products more than just raw computing power.

The rapidly-improving speed and versatility of digital computers has mostly driven analogue computers out of use in modern systems, as has the relative difficulty of programming an analogue computer. There is a kind of art, though, in weaving together a series of op-amps to perform mathematical calculations; between this, a historical interest in the machines, and their rarity value, it’s no wonder that new analogue computers are being designed even now, such as [Markus Bindhammer]’s system.

The computer is built around a combined circuit board and patch panel, based on the designs included in three papers in a online library of analogue computer references. The housing around the patch panel took design cues from the Polish AKAT-1 analogue computer, including the two dial voltage indicators and an oscilloscope display, in this case an inexpensive DSO-138. The patch panel uses banana connectors and the jumper wires use stackable connectors, so several wires can be connected to the same socket.

The computer itself has a summing amplifier circuit, a multiplier circuit, an integrator, and square, triangle, and sine wave generators. This simple set of tools is enough to simulate both simple and complex math; for example, [Markus] squared five volts with the multiplier, resulting in 2.5 volts (the multiplier divides the result by ten). A more advanced example is a leaky-integrator model of a neuron, which simulates a differential equation.

We’ve covered a few analogue computers before, as well as a neuron-simulating circuit similar to [Markus]’s demonstration.

The various Raspberry Pi camera modules have become the default digital camera hacker’s tool, and have appeared in a huge number of designs over the past decade. They’re versatile and affordable, and while the software can sometimes be a little slow, they’re also of decent enough quality for the investment. Making a Pi camera can be annoying though, because different screens, lenses, and modules have their own mounting requirements. [Jacob David C Cunningham] has a solution here, with a modular Raspberry Pi camera, as an experimentation platform for different screens and lenses.

It takes the form of a central unit that holds the Pi and its support components, and front and rear modules for the screens or displays. Examples are given using the HQ and non-HQ modules, as well as with round or rectangular displays.

When designing a camera for 3D printing it’s a very difficult task, to replicate or exceed the industrial design of commercial cameras. Few succeed, and we’d include ourselves among that number. But this one comes close; it looks like a camera we’d like to use. We like it.

As pointed out by Tom’s Hardware, it’s been 26 years since the introduction of the gigahertz desktop CPU. AMD beat Intel to the punch by dropping the 1 GHz Athlon chip on March 6th of 2000, and partnered with Compaq and Gateway (remember them?) to deliver pre-built machines featuring the speedy silicon just a week later. The archived press release announcing the availability of the chip makes for some interesting reading: AMD compares the accomplishment with Chuck Yeager breaking the sound barrier, and mentions a retail price of $1,299 for the CPU when purchased in 1,000 unit quantities. In response Intel “launched” their 1 GHz Pentium III chip two days later for $990, but supply problems kept it out of customer’s hands for most of the year.

Speaking of breaking a barrier, Mobile World Congress took place this week in Barcelona, where TechCrunch reports there was considerable interest in developing a sub-$50 smartphone. The GSM Association’s Handset Affordability Coalition is working with major telecom carriers in Africa and as of yet unnamed hardware partners to develop the low-cost 4G device with the hopes of bringing an additional 20 million people online. While the goal is worthy enough, industry insiders have pointed out that the skyrocketing cost of memory will make it particularly challenging to meet the group’s aspirational price point.

While we’re big fans of affordable hardware at Hackaday, we’re less enthusiastic when it comes at the cost of repairability. It seems that won’t be a problem with Lenovo’s new T14 and T16 ThinkPads however, as earlier this week iFixit announced they were giving the laptops a provisional repairability score of 10 out of 10. As impressive as this sounds, there’s a bit of a caveat here: Lenovo apparently achieved this milestone by working closely with iFixit to identify pain points that could be improved.

Of course, this doesn’t invalidate the work both companies put into these new machines, but you do have to wonder if it didn’t put a thumb on the scale. To address this there’s an Editor’s Note at the top of the post denying that any preferential treatment was given while scoring.

Although we’re thrilled to see a manufacturer other than Framework actually put effort into making their laptops cheaper and easier to repair, it’s a shame that things have gotten to the point that repairability is now considered a special feature. We’re not just talking about computers either; modern cars are notoriously difficult to work on, and electrics doubly so. Which is what makes the Aria EV so appealing.

Developed by students at the Eindhoven University of Technology in the Netherlands, the electric car is designed to be as repairable as possible. Before you get too excited, the idea isn’t to try and get the car to market. In fact, the team cautions that the vehicle isn’t technically street legal. Rather it serves as an technical demonstrator and test bed for concepts that one day the major players might include in their own vehicles, such as using multiple smaller battery packs that are easier to service than one gargantuan array of cells.

Finally, we’re not quite sure how long it’s been around, but we’ve been having a blast browsing through Famelack recently. It allows you to watch free Internet TV streams from all over the world right in your browser. The About page mentions several open source projects being used under the hood, such as Three.js, which powers the slick 3D globe used to select which country you want to tune into. Perhaps most notably however, it’s using the collection of streams curated by the iptv-org project, a valuable resource to keep in mind for future projects. If you end up watching anything particularly noteworthy, let us know in the comments.

See something interesting that you think would be a good fit for our weekly Links column? Drop us a line, we’d love to hear about it.

With the RAM and storage crisis hitting personal computing very hard – along with new software increasingly suffering the effects of metastasizing ‘AI’ – more people than ever are pining for the ‘good old days’. For example, using that early 2000s desktop PC with Windows 98 SE might now seem to be a viable alternative in 2026, because it couldn’t possibly make things worse. Or could it? As a reality check, [SteelsOfLiquid] over on YouTube gave this setup a whirl.

The computer of choice is a very common Dell Dimension 2100, featuring a zippy 1.1 GHz Intel Celeron, 256 MB  of DDR1, and a spacious 38 GB HDD. Graphics are provided by the iGPU in the Intel i810 chipset, all in a compact, 6.9 kg light package. As an early Windows XP PC, this gives Windows 98 SE probably a pretty solid shot at keeping up with the times. At least the early 2000s, natch.

Of course, there is a lot of period-correct software you can install, such as Adobe Photoshop 5, MS Office 97 (featuring everyone’s beloved Clippy), but a lot of modern software also runs, with the Retro Systems Revival blog documenting many that still run on Win98SE in some manner, including Audacity 2.0. This makes it totally suitable for basic productivity things.

Gaming on Win98 is naturally limited to games from around that early 2000s time period or before, but the gaming library even for just Win98 and MS-DOS is pretty massive, so as long as you’re fine not playing the latest and greatest games, this is also pretty easy.

Where things get dicey is of course with using the modern Internet, as you need a modern browser and support for the latest TLS encryption features to not have many websites throw a hissy fit. Using Frog Find and similar proxies that target retro computing help here, fortunately.

Previously we covered ways that you can use Discord even on Windows 95 and Windows NT 3.1, others have ported .NET applications to Windows 9x, got Win98 up and running on a 2020-era system, and you can totally use modern YouTube in even the Netscape 2.x browser using an NPAPI plugin.

Although there are many arguments to be made for using at least a Windows version with an NT kernel over the 9x one, it’s hard to deny that software Back Then was less complex, less resource-hungry and still got all the things done. Maybe it is worth another look, before the AI Crisis forces us all back on Windows XP systems like the one featured in this video.

You are at war. Trains are key to keeping your army supplied with fuel, ammunition, food, and medical supplies. But, inexplicably, your trains keep blowing up. Sabotage? Enemy attack? There’s no evidence of a bomb or overt enemy attack. This is the situation the German military found itself in during World War II. As you can see in the video below, the hidden bomb was the brainchild of a member of Britain’s SOE.

The idea was to put plastic explosive inside a fake plastic lump of coal.  They hand-painted each one, and the color had to match the exact appearance of local coal. Paint and coal dust helped with that. The bomb had to weigh the correct amount as well.

The coal was safe until it got quite hot, so resistance fighters could easily carry the coal and surreptitiously drop the bomb anywhere coal is stored. Eventually, it will be put in a boiler, and at the right temperature, it will do its job. There’s some actual footage of a test in the second video below.

As the CIA notes, the idea actually dates back to the US Civil War. [Thomas Edgeworth Courtenay] built coal “torpedos” in the 1860s. (In those days, a torpedo could refer to any kind of bomb.) Probably the biggest impact was to tie up soldiers to guard coal stocks. However, in 1864, the USS Chenango’s boiler exploded in New York, and although the Union denied it, [Courtenay] was convinced it was one of his coal torpedoes that had done the trick. Later that year, Greyhound, the personal steamer of Major General Benjamin Butler, exploded right after taking in fresh coal. The CIA also mentions how coal bombs were also produced by the OSS, and even the Axis powers had their own version.

While we are no fans of war, we have to admit we are always fascinated with war technology. Even if that means microwave death rays. Certainly, hiding explosives in coal qualifies as a wartime hack.