There’s a dedicated group of users out there that aren’t ready to let their beloved IBM PC110 go to that Great Big Data Center in the Sky. Unfortunately, between the limited available technical information and rarity of replacement parts, repairing the diminutive palmtops can be tricky.

Which is why [Ahmad Byagowi] has started a project that aims to not only collect all the available schematics and datasheets that pertain to the machine, but to reverse engineer all of the computer’s original circuit boards. Working from optical and x-ray scans, the project has already recreated the motherboard, power supply, modem, keyboard, and RAM module PCBs in KiCad.

Just last week the project released production-ready Gerbers for all the boards, but considering there have been 45+ commits to the repository since then, we’re going to assume they weren’t quite finalized. Of course, with a project of this magnitude, you’d expect it to take a few revisions to get everything right. (Hell, we’ve managed to screw up board layouts that had fewer than a dozen components on them.)

If you’d like to lend a hand, [Ahmad] says he could use the help. Beyond checking the boards for problems and reporting issues, he’s also on the hunt for any datasheets or other documentation that can be found for the PC110 or its components. It looks like there’s still schematic work that needs to be done as well, so if your idea of zen is figuring out how ~30 year old computers were wired up internally, this might be the perfect summer project for you.

Interestingly, our very own [Arya Voronova] has been working on creating a drop-in replacement motherboard for the Sony Vaio P using KiCad and imported board images. That hobbyists are now able to do this kind of work using free and open source tools is a reminder of just how far things have come in the last few years.

Thanks to [adistuder] for the tip.

hackaday.com/2025/04/06/revers…

If Clive Sinclair’s genius in consumer electronics was in using ingenious hacks to make cheaper parts do greater things, then his Amstrad competitor Alan Sugar’s was in selling decade-old technology to consumers as new and exciting. His PCW series of computers are a great example, 1970s CP/M machines smartly marketed for late 1980s home offices. They were a popular choice at the time, and [Retro Recipes] has one. In a video filmed in period standard definition he’s taking us through a repair to its Gotek drive, and then a RAM upgrade.

The repair and upgrade are fairly straightforward, the former being a failed OLED screen on the drive and the latter being the installation of a bank of DIP memory chips. The interest lies in how they cost-minimised a CP/M machine as a consumer product. The board relies heavily on custom chips as you might expect, and there’s a brief glimpse of one of those unusual 3″ floppy drives. The power supply is part of the monitor board as was often the case with Amstrad machines, and the whole thing is about as simple as it can be. The full video can be found below the break.

We’re guessing that particularly in the UK there will be plenty of PCWs still languishing in dusty attics, but surprisingly given their popularity at the time we see less of them that might be expected. There has been a significantly upgraded model on these pages though.

youtube.com/embed/itsLUl_Emco?…

hackaday.com/2025/04/06/an-ams…

[Georges Gagnerot] has been trying to emulate iOS and run iPhone software in a virtual environment. There were a few choices, and qemu-t8030 had a number of interesting features that you can check out in his post.

The project requires a patched QEMU, and [Georges] did some basic jailbreaking techniques. The real problem, of course, was not having the Apple Silicon GPU. Older versions of iOS let you select software rendering, but that option is gone on newer versions. However, it was possible to patch the phone to still use software rendering. There are still apps that directly use Metal or OpenGL that won’t run, but that’s another problem.

There is a plan to explore forwarding GPU calls to a real device. However, that seems difficult so it will have to wait for now.

That wasn’t the last problem, of course. But the post gives you a great view into the detective work. There is still work to go, but it looks like a lot of progress.

You can find the t8030 code on GitHub. Most of the iPhone hacking we see is hardware even if it means cutting the screen.

hackaday.com/2025/04/06/emulat…

It’s been 30 years since Windows 95 launched. [Ms-Dos5] and [Commodore Z] are celebrating with an epic exhibit at VCF East 2025. They had no fewer than nine computers — all period-correct machines running versions of Windows 95. The pictures don’t do it justice, so if you are near Wall, NJ, on Sunday, April 5, 2025, definitely go check out this and the rest of the exhibits at VCF.

An exhibit like this isn’t thrown together overnight. [Commodore Z] and [Ms-Dos5] worked for months to assemble the right mix of desktops, laptops, and prehiperals to showcase Windows 95. Many of the computers are networked as well – which was no easy task. One particular Thinkpad 760e required pliers and force to remove a stuck PCMCIA modem card. After a struggle that was ultimately destructive to the card, the pair determined it was stuck due to a sticker that had effectively glued the card into the laptop. As the sticker finally gave up, the card popped itself out of the laptop.

Hardware isn’t the only story of this Windows 95 exhibit. An operating system is software, after all. The team has plenty of software running. Some highlights are Kidpix, MS-paint, Lego Island, LucasArts Full Throttle, Duke Nukem 3D, Word 97, and Space Cadet Pinball, which came with the Plus! expansion pack. There is a huge array of original boxes for Windows 95 software. It’s a nostalgia trip to see software in boxes, especially in all those bright 90’s colors.

The various versions of Windows 95 are also represented. [Ms-Dos5] and [Commodore Z] are running all major versions from Chicago beta 73g to Windows 95 C / OSR2.5.

If you’re old enough to remember 1995, the Windows 95 launch event was a big deal. Windows 3.0 series was five years old at that point. Millions of people owned PC compatible computers and were ready for something new and flashy, and Windows 95 delivered. Thanks to [Commodore Z] and [Ms-Dos5] keeping this bit of internet history alive.

hackaday.com/2025/04/06/celebr…

The F-number of a photographic lens is a measure of its light-gathering ability, and is expressed as its aperture diameter divided by its focal length. Lenses with low F-numbers are prized by photographers for their properties, but are usually expensive because making a good one can be something of a challenge. Nevertheless [Rulof] is giving it a go, making an 80mm F0.5 lens with a Sony E-mount. The video below the break has all the details, and also serves as a fascinating primer on lens design if you are interested.

Rather than taking individual lenses, he’s starting with the second-hand lens from an old projector. It’s got the required huge aperture, but it’s by no means a photographic lens. An interesting component is his choice of diaphragm for the variable aperture, it’s a drafting aid for drawing circles which closely resembles a photographic part. This is coupled with the triplet from an old SLR lens in a 3D-printed enclosure, and the result is a lens that works even if it may not be the best. We know from experiences playing with lens systems that adjusting the various components of a compound lens like this one can be very difficult; we can see it has the much sought-after bokeh or blurred background, but it lacks sharpness.

Perhaps because a camera is an expensive purchase, we don’t see as much of this kind of hacking as we’d like. That’s not to say that lenses don’t sometimes make their way here.

youtube.com/embed/La-0-Mwj0HQ?…

hackaday.com/2025/04/06/a-low-…

Comincia a essere chiaro a tutti quanto sia importante in questo momento STACCARSI DAI GRANDI MONOPÒLI americani.

Comincio dal n.1 nel commercio online: AMAZON (ma anche eBay).
Oltre al sacrosanto 'andiamo nei negozi', ci sono "marketplace" alternativi?
Non solo: c'è DI MEGLIO.
Scopriamo insieme queste vere e proprie chicche!

1) commercioVirtuoso (tante categorie)
Italiani, sostenibili e di qualità: i prodotti di questa giovane impresa promettono di venire incontro al commercio locale (acquisti dai negozi sul territorio), all'ambiente (la merce non deve percorrere mezzo mondo) e al valore della lentezza (opposta al "fast" del consumo usa-e-getta).

2) Bookdealer (libri)
Comprare dalle librerie indipendenti con la comodità di ordinare online: è questo l'obiettivo di questa iniziativa, che permette di trovare un libro in una delle librerie aderenti sul territorio nazionale e farselo recapitare anche direttamente a domicilio.

3) Emarketworld (tante categorie - no libri)
Un'altra startup italiana relativamente giovane, che si presenta come un marketplace onesto e con ottime recensioni, un vasto assortimento e la possibilità di trovare anche occasioni e prodotti ricondizionati.

4) PagineGialle Shop (tante categorie - no libri)
Sorprendentemente poco conosciuto, il marketplace di Pagine Gialle è molto assortito. Come su Amazon, i prodotti possono essere venduti dai singoli venditori o direttamente dallo Shop. Vale la pena di esplorarlo bene.
Da segnalare anche PagineGialle, che permette di trovare i negozi più vicini senza passare per Google Maps, e PGCasa, dove si possono reperire facilmente artigiani per tutti i piccoli e grandi lavori domestici.

5) Libri da Asporto (libri)
Non è un vero marketplace, ma un sito che raccoglie molte librerie aderenti, permettendo di trovare facilmente le più vicine sul territorio e di mettersi in contatto direttamente con loro (via email o whatsapp) per ordinare e farsi recapitare i libri anche a domicilio.

6) Subito (tante categorie)
Sicuramente più conosciuto (grazie anche alle campagne pubblicitarie), oltre ad essere un marketplace molto assortito, permette di pubblicare annunci e si configura perciò come una delle alternative nostrane che possono competere anche con eBay (tuttavia senza possibilità di asta).

7) Il Fedimercatino
E per restare nel Fediverso, che dire di questa bella iniziativa no-profit federata, collegata alla comunità Lemmy @Il Mercatino del Fediverso 💵♻️? Il "Mercatino delle Pulci Online Eco-Sostenibile del fediverso" è un piccolo e giovanissimo spazio (in espansione!) nato per contrastare la cultura dello spreco, ridurre i rifiuti e promuovere la filosofia del "Regalo Consapevole" (ma è possibile vendere o acquistare prodotti con prezzi fino a 299€). Leggete bene la pagina about!

8) StrumentiMusicali / MercatinoMusicale (strumenti musicali, apparecchiature e accessori)
Tra i tanti siti specializzati in una sola categoria, presento questo (anche per... deformazione professionale), che ho sempre trovato affidabile, ben fornito e di riferimento nel mondo musicale.
Il Mercatino è inoltre un sito dove mettere e trovare annunci per ottime occasioni.

#Amazon #noamazon #degafam #eBay #NoEbay #buyeuropean #compraeuropeo #compraitaliano #monopolio #alternative #marketplace