Category Archives: Anything

Unsorted stuff. Regular blog posts.

Windows ghosts devices

(AI translated) If you happen to be involved in USB device design and frequently connect unsuccessful experiments, Windows secretly accumulates unnecessary information. Later, when connecting a “Generic” printer, there’s an issue – it’s unclear which port works: Ghosts Only one … Continue reading

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2022 is here!

(AI translated) Well, it’s New Year again. Probably, 2022 in a row since some event. Or 5782. Or 1443. Or Reiwa 4. Or maybe 7530? Or maybe 4720. For me, it’s probably about the 50th number… So, the number doesn’t … Continue reading

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My Disk and Data

(AI translated) Yesterday, I wanted to open an old file and pfff…. A quick analysis showed that the disk is dying, although SMART says everything is fine. Shit. But it’s a good opportunity to talk about how my disk farm … Continue reading

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AVR103: Graphics module VFD GU140×16

(AI translated) Lithuanian airports disposed of some equipment, and there were devices with VFD screens (the devices themselves were specific, with very strange software). At least I got the VFD screens: Noritake Itron GU112x16G-7806A V3. I think the software is … Continue reading

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LM2596* modules from China

(AI translated) For my latest collection exhibit, I decided to upgrade the power supply – to create something like the LM2596 from an overclocked 7805… Before the postal service went crazy, I bought the cheapest PCBs with counterfeit LM2596ADJ from … Continue reading

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RIFA capacitor failure

(AI translated) Anyone somewhat involved with old electronics will eventually encounter RIFA capacitors and their tendency to catch fire. I finally experienced it myself – a peculiar device was working, and I had to walk the dog. When I got … Continue reading

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My 484 enemies

I have 484 enemies… Solder balls, 0.55mm diameter. Just testing my first 4 layer PCB with some second hand FPGA chips. I am using old solder paste to build new balls… but with bad result. Two pins are missing (from … Continue reading

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Forbidden NEMA repair

(AI translated) Somewhere, I mentioned that I have a photolithographic (UV-curing resin) printer. But I never mentioned that when I first bought that printer, my relatives decided to move it to another place without my knowledge because it smelled very … Continue reading

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HTTPS testinis pranešimas

Testuojam https://www.savel.org

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Power standard for my computer collection

I have small collection of vintage computers. Several computers do not have PSU, other one have very specific ones. The problem is with some that looks like “standard”, have same connector like others, but have reversed polarity. Like ZX Spectrum … Continue reading

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