Jenny’s Daily Drivers: Haiku R1/beta5

December 11, 2025 by Jenny List 17 Comments

Back in the mid 1990s, the release of Microsoft’s Windows 95 operating system cemented the Redmond software company’s dominance over most of the desktop operating system space. Apple were still in their period in the doldrums waiting for Steve Jobs to return with his NeXT, while other would-be challengers such as IBM’s OS/2 or Commodore’s Amiga were sinking into obscurity.

Into this unpromising marketplace came Be inc, with their BeBox computer and its very nice BeOS operating system. To try it out as we did at a trade show some time in the late ’90s was to step into a very polished multitasking multimedia OS, but sadly one which failed to gather sufficient traction to survive. The story ended in the early 2000s as Be were swallowed by Palm, and a dedicated band of BeOS enthusiasts set about implementing a free successor OS. This has become Haiku, and while it’s not BeOS it retains API compatibility with and certainly feels a lot like its inspiration. It’s been on my list for a Daily Drivers article for a while now, so it’s time to download the ISO and give it a go. I’m using the AMD64 version.

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The EFF Nails It: What’s Wrong With UK Digital ID

December 9, 2025 by Jenny List 69 Comments

It sometimes seems as though we are in a constant tussle over privacy between governments and the governed, with each year bringing fresh attempts to extend surveillance, and consequent battles. For Brits the big news at the moment comes in a new digital ID scheme, something that will be required for anyone wishing to work in the country, as well as for certain government services. It’s something that has attracted a lot of opposition, and now the EFF have produced an analysis of why they think it won’t work.

From the perspective of a British writer it would be easy to write screeds about the flaws in the scheme, the way it over-reaches, and about the historical distrust of Brits for their government’s bureaucracy. With the parliamentary petition opposing it approaching three million signatures, there’s no shortage of people who don’t support it. Perhaps the most obvious thing for most of us is how unnecessary it is for its stated aim of preventing illegal immigrants from seeking employment, it neglects that we already have to show proof of right to work before being hired, and that if crooked employers ignore that they will surely also ignore the digital ID.

If you’re reading this elsewhere in the world from where this is being written then it’s still of relevance, because governments like to point to other countries to justify these measures. Follow the EFF on this matter, and take note.

Art: British Passport SVG by Swapnil1101, Public Domain

Anatomy Of A Minimalist Home Computer

December 7, 2025 by Jenny List 22 Comments

There are plenty of well-known models among the 8-bit machines of the 1980s, and most readers could rattle them off without a thought. They were merely the stars among a plethora of others, and even for a seasoned follower of the retrocomputing world, there are fresh models from foreign markets that continue to surprise and delight. [Dave Collins] is treating us to an in-depth look at the VTech VZ-200, a budget machine that did particularly well in Asian markets. On the way, we learn a lot about a very cleverly designed machine.

The meat of the design centres not around the Z80 microprocessor or the 6847 video chip, but the three 74LS chips handling both address decoding and timing for video RAM access. That they managed this with only three devices is the exceptionally clever part. While there are some compromises similar to other minimalist machines in what memory ranges can be addressed, they are not sufficient to derail the experience.

Perhaps the most ingenuity comes in using not just the logic functions of the chips, but their timings. The designers of this circuit really knew the devices and used them to their full potential. Here in 2025, this is something novice designers using FPGAs have to learn; back then, it was learned the hard way on the breadboard.

All in all, it’s a fascinating read from a digital logic perspective as much as a retrocomputing one. If you want more, it seems this isn’t the only hacker-friendly VTech machine.

John Dalton, CC BY-SA 3.0.

Mac System 7 On A G4? Why Not!

December 5, 2025 by Jenny List 13 Comments

Over the many years Apple Computer have been in operation, they have made a success of nearly-seamlessly transitioning multiple times between both operating systems and their underlying architecture. There have been many overlapping versions, but there’s always a point at which a certain OS won’t run on newer hardware. Now [Jubadub] has pushed one of those a little further than Apple intended, by persuading classic Mac System 7 to run on a G4.

System 7 was the OS your Mac would have run some time in the mid ’90s, whether it was a later 68000 machine or a first-gen PowerMac. In its day it gave Windows 3.x and even 95 a run for their money, but it relied on an older Mac ROM architecture than the one found on a G4. The hack here lies in leaked ROMS, hidden backwards compatibility, and an unreleased but preserved System 7 version originally designed for the ’90s Mac clone programme axed by Steve Jobs. It’s not perfect, but they achieved the impossible.

As to why, it seems there’s a significant amount of software that needs 7 to run, something mirrored in the non-Mac retrocomputing world. Even this hack isn’t the most surprising System 7 one we’ve seen recently, as an example someone even made a version for x86 machines.

Thumbnail Image Art: Apple PowerMac G4 by baku13, CC BY-SA 3.0

Biogas Production For Surprisingly Little Effort

December 4, 2025 by Jenny List 31 Comments

Probably most people know that when organic matter such as kitchen waste rots, it can produce flammable methane. As a source of free energy it’s attractive, but making a biogas plant sounds difficult, doesn’t it? Along comes [My engines] with a well-thought-out biogas plant that seems within the reach of most of us.

It’s based around a set of plastic barrels and plastic waste pipe, and he shows us the arrangement of feed pipe and residue pipe to ensure a flow through the system. The gas produced has CO2 and H2s as undesirable by-products, both of which can be removed with some surprisingly straightforward chemistry. The home-made gas holder meanwhile comes courtesy of a pair of plastic drums one inside the other.

Perhaps the greatest surprise is that the whole thing can produce a reasonable supply of gas from as little as 2 KG of organic kitchen waste daily. We can see that this is a set-up for someone with the space and also the ability to handle methane safely, but you have to admit from watching the video below, that it’s an attractive idea. Who knows, if the world faces environmental collapse, you might just need it.

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Raising A GM EV1 From The Dead

December 4, 2025 by Jenny List 19 Comments

Probably the biggest story in the world of old cars over the past couple of weeks has been the surfacing of a GM EV1 electric car for sale from an auto salvage yard. This was the famous electric car produced in small numbers by the automaker in the 1990s, then only made available for lease before being recalled. The vast majority were controversially crushed with a few units being donated to museums and universities in a non-functional state.

Finding an old car isn’t really a Hackaday story in itself, but now it’s landed in [The Questionable Garage]. It’s being subjected to a teardown as a prelude to its restoration, offering a unique opportunity to look at the state of the art in 1990s electric automotive technology.

The special thing about this car is that by a murky chain of events it ended up as an abandoned vehicle. GM’s legal net covers the rest of the surviving cars, but buying this car as an abandoned vehicle gives the owner legal title over it and frees him from their restrictions. The video is long, but well worth a watch as we see pieces of automotive tech never before shown in public. As we understand it the intention is to bring it to life using parts from GM’s contemporary S10 electric pickup truck — itself a rare vehicle — so we learn quite a bit about those machines too.

Along the way they find an EV1 charger hiding among a stock of pickup chargers, take us through the vehicle electronics, and find some galvanic corrosion in the car’s structure due to water ingress. The windscreen has a huge hole, which they cover with a plastic wrap in order to 3D scan so they can create a replacement.

This car will undoubtedly become a star of the automotive show circuit due to its unique status, so there will be plenty of chances to look at it from the outside in future. Seeing it this close up in parts though is as unique an opportunity as the car itself. We’ve certainly seen far more crusty conventional cars restored to the road, but without the challenge of zero parts availability and no donor cars. Keep an eye out as they bring it closer to the road.

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That Power Bank Isn’t Quite So Sweet

December 3, 2025 by Jenny List 9 Comments

An unlikely hit of the last few months’ consumer hardware has been a power bank branded by the German confectionery company Haribo. It first gained attention in backpacking circles because of its high capacity for a reasonable weight, and since then has been selling like the proverbial hot cakes. Now Amazon have withdrawn it from their store over “A potential safety or quality issue”. The industrial imaging company Lumafield have taken a look at the power bank with a CT scanner, to find out why.

As you might imagine, the power bank is all battery inside, with pouch type lithium ion cells taking up all of the space. Immediately a clue appears as to why Amazon withdrew them, as the individual layers of the cells are misaligned, laying open a risk of failure. They also take a look at a set of earbuds from the same source and find something even more concerning — torn electrodes. Thus neither device can be regarded as safe, and the backpackers will have to haul around a little bit more in the future.

You’ll not find the Wrencher on a power bank, but you can be sure if you did, we’d make sure there was an element of quality control at play. Meanwhile we feel slightly sorry for the branding executive responsible at Haribo, who we are guessing has had a bad day. We’ve featured Lumafield’s work here before quite a few times, most recently looking at similar defects in 18650 cells.