Posts by jaseg@chaos.social
(DIR) Post #AzmInoirPB7FCRvDwO by jaseg@chaos.social
2025-10-21T09:55:15Z
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The big question here is how much entropy is within these per-specimen manufacturing variations, and what dimensionality of feature space you can extract out of it with a smarter classifier/extractor.
(DIR) Post #AzmInwj9dy6Y1g7ZVg by jaseg@chaos.social
2025-10-21T09:57:36Z
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A fun part of the project was some micro-soldering work I did to create multiple variants of the design using different driver ICs. I'm really happy with my 300 €-class aliexpress microscope and my fancy titanium tweezers lol.
(DIR) Post #AzmIo4XkaFjgGcqZqS by jaseg@chaos.social
2025-10-21T10:01:24Z
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A more obscure result that came out of the data was that in a single measurement, you can see both the temperature dependence of the specific resistivity of copper, and the termperature dependence of the dielectric permittivity of the PCB's FR-4 substrate. In a practical application you'd probably calculate these out. This plot shows the raw response in gray, and the difference in black for IIRC a ~40 celsius temperature delta.
(DIR) Post #AzmIoDkqKwYYpq2f0C by jaseg@chaos.social
2025-10-21T15:27:51Z
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The “environmental factors” measurement series of that paper was why I was finding literal bugs in my laptop keyboard.#science
(DIR) Post #Azw6p8p2u7bfxUHNzc by jaseg@chaos.social
2025-11-05T12:11:24Z
2 likes, 0 repeats
@cato that’s honestly not the worst idea. Easily supports ancient devices that don’t do svg properly yet, is natively scalable, and probably even saves some data over anything except svg where you put the entire code into one big chonky path data.
(DIR) Post #Azw6pq6vxUSuDPymLQ by jaseg@chaos.social
2025-11-05T12:47:12Z
1 likes, 0 repeats
@mart_w @cato exactly that upscaling is only properly supported on fairly recent browsers
(DIR) Post #B0CFDnkWeggVkpN4Ma by jaseg@chaos.social
2025-11-13T07:59:34Z
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@foone I had your exact problem and I wrote a tool called gerbonara specifically for that. Among other things it can render Gerber to svg and it preserves arcs exactly. I’ve also written a tool named gerbolyze that does the (much, much harder) reverse operation and turns svg into Gerber to arbitrary precision.
(DIR) Post #B0MqA4YE2hMapbHKHg by jaseg@chaos.social
2025-11-18T09:10:24Z
1 likes, 0 repeats
@gsuberland We had a similar problem a while ago, but with a conventional meter. We had to tidy up some billing fuckup caused by mis-labeled meters. The energy provider ended up fixing the billing issue by booking ~6 months of use all on one month in their internal bookkeeping. After that, for the next two years they would try to triple our payment every time they read the meter because apparently they did some very dumb average or something.
(DIR) Post #B0MqA5iXhpD6Rt750K by jaseg@chaos.social
2025-11-18T09:12:33Z
1 likes, 0 repeats
@gsuberland I ended up having to revoke their permission to directly credit my bank account and set up an automatic recurring SEPA transaction instead because they randomly cleared out the account one time after changing something in their computer infrastructure.
(DIR) Post #B0MqGScVT25HDYKKw4 by jaseg@chaos.social
2025-11-18T09:29:16Z
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@gsuberland fuck, what a mess
(DIR) Post #B0uJWpwHP07tp8TR8i by jaseg@chaos.social
2025-12-04T10:14:10Z
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@yaya "constantly re-inventing their perfectly working UI, irritating users and breaking workflows" is such an interesting failure mode of modern large software companies. I saw the *exact* same pattern when using spotify, for instance.
(DIR) Post #B0uJWxniAk1gCsWhtY by jaseg@chaos.social
2025-12-04T10:15:36Z
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@yaya I think this stems from the organization hiring a large number of UI desing / programming people, then eventually finishing their UI. Since these people need to do *something* not to be fired, intentionally or not the start inventing stuff to do. Since most orgs only have a very remote grasp on the actual wants and needs of their customers, the fact that this constant re-invention fucks up the UX more than it helps flies completely under their organizational radar.
(DIR) Post #B16YhmdRr805yKrXPM by jaseg@chaos.social
2025-12-10T11:55:02Z
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@gsuberland I agree with your point. I’m unhappy for the exact same reason.I think ideally we’d have some fully recyclable material for supports and prototypes that works with consumer 3d printers, but I don’t see that coming any time soon.
(DIR) Post #B16YhvX2mJE1Z4w3Au by jaseg@chaos.social
2025-12-10T11:58:08Z
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@gsuberland In Germany, there is https://recyclingfabrik.com/ who both sell filament and offer recycling of leftovers and empty spools. They have some pretty sweet and unusual recycled filament colors, usually they are darker and more muted.
(DIR) Post #B1Cz4fDNNIEDNIzvIe by jaseg@chaos.social
2025-12-13T12:31:00Z
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For the last month, the IT department of the ~5k staff strong university I'm working at until the end of the year has somehow managed to break the authentication service backing their email infrastructure at least once every two weeks. Kind of annoying considering how much of this place runs on email. You'd think they would put more care into a core service like that.
(DIR) Post #B1GZNg2ehfWhGZEEwy by jaseg@chaos.social
2025-12-15T07:43:57Z
1 likes, 0 repeats
@mhoye a while ago, I was counting CPUs inside an embedded SoC that was labeled a “dual core” device. It had 11 of them.
(DIR) Post #B1dzQwo6A2ka2kTNvU by jaseg@chaos.social
2025-12-26T14:53:19Z
1 likes, 0 repeats
on my way to Hamburg!#39c3
(DIR) Post #B2YGWbu3m1DfoKAa8G by jaseg@chaos.social
2026-01-22T16:50:24Z
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This January’s award for the eval board with the witchiest vibes goes out to the HMC7044 eval board. The chip is a 3GHz integer PLL with 14 phase-adjustable outputs.#electronics
(DIR) Post #B2ZUBG31QgXkSj2B2O by jaseg@chaos.social
2026-01-23T08:49:09Z
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Lol, fastmail is trying to fuck over their customers at the moment. They're sending out emails that "due to customer demand" they have decided to start billing EU customers in EUR instead of USD. If you look at the prices, they in fact converted a 5 USD a month plan to a 5 EUR per month plan, which at this moment is a price increase by about 15%. So basically they're trying to hide that they're increasing prices.
(DIR) Post #B2ZUBGvy8OUnD8k3gO by jaseg@chaos.social
2026-01-23T08:49:46Z
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I very politely told their support that they can fuck off and that my credit card works just fine for billing in USD, just like it used to for the past several years. Let's see what they do now.