@jaseg@chaos.social
@jaseg@chaos.social avatar

jaseg

@jaseg@chaos.social

I am doing #electronics, #embedded programming, #python scripting, hardware security and recently some sewing. Pronouns: er/they

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mia, to random
@mia@void.rehab avatar

With the introduction of Dolby Surround 7.1 in 2010, Sony were eager to put out a full home theater system. One of their early models, the HT-A7.100, included a revolutionary evolution to the standard stereo jack: the 7.1 surround jack, allowing all 8 channels to be sent over one cable.

jaseg,
@jaseg@chaos.social avatar

@mia The 8 ring one could even support VGA

volcan01010, to Electronics
@volcan01010@fosstodon.org avatar

On Friday, I had pan-fried, left over, macaroni cheese for dinner. The START / STOP buttons on my microowave have stopped working, so I couldn't reheat it.

I'm trying to fix the buttons now. They are on a flat plastic panel and seem to have contacts that get better contact when pressed, and I think that they now longer "spring" open again.

Does anyone know how I could fix these?

cc: @ultrazool @ianturton

jaseg,
@jaseg@chaos.social avatar

@volcan01010 Keypads like this are terrible, you're likely to break it even trying to separate the layers. If it's the front foil that has become distorted maybe glueing on an extra piece of a similar material could help it spring back? The only proper fix I can imagine is replacing the whole thing with either a part from another device of the same model or a custom PCB. A custom PCB to replace that thing would probably end up costing around 20$.

scottjenson, to Figma
@scottjenson@social.coop avatar

I just tried a few AI plugins for and they were all bad. This domain might be a great test for . I predict these failings are unlikely to be fixed any time soon:

  • Layout was poor
  • They can't create components
  • Laughably complex object hierarchies (everything was enclosed in a frame)

Of course things will improve, but I expect fixing these deep structural problems are a function of many new constraints, likely beyond what today's LLMs are actually capable of. @simon ?

jaseg,
@jaseg@chaos.social avatar

@scottjenson This problem reminds me of AI-generated printed circuit board layouts. A bunch of companies have been trying to get that one right for years now, but the 2D nature and the topological constraints of the interconnections make it really hard to do with AI.

azonenberg, to random
@azonenberg@ioc.exchange avatar

I think this is next level cursed. But it actually worked.

jaseg,
@jaseg@chaos.social avatar

@azonenberg It does save a bunch of IOs compared to using the FMC. I don't even think it's that cursed.

cccpresser, to random
@cccpresser@chaos.social avatar

If in doubt, use more flux.

the plan is to bring those to future events.

jaseg,
@jaseg@chaos.social avatar

@cccpresser I want one of these, but for flux

jaseg,
@jaseg@chaos.social avatar

@cccpresser Maybe even one of these for especially urgent cases

jaseg, to random
@jaseg@chaos.social avatar

Lol, I decided after not using it for a while I should try FreeCad again. I tried to do a very simple model in it, which needed a thread. Turns out that in 2024 CE, FreeCad somehow still can't do (arbitrary pitch and diameter) threads. How?! I thought this is a CAD tool?! 😬

MattHatton, to random
@MattHatton@aus.social avatar

How to tell, in three words, that you're about to read something that is incredibly stupid.

jaseg,
@jaseg@chaos.social avatar

@MattHatton Does paying a ransomware ransom in bitcoin count? 🤣

ValerieSonh, to firefox
@ValerieSonh@masto.ai avatar

starts new data-gathering program https://blog.mozilla.org/en/products/firefox/firefox-search-update/ The article explains how to opt out. "Same" privacy indeed. 😐

jaseg,
@jaseg@chaos.social avatar

@ValerieSonh I think the data collection that they describe in the article is fine. They're clearly not out to build profiles, and the categorical information that they collect doesn't leak anything relevant.

jaseg, to random
@jaseg@chaos.social avatar

An actual product sold in a German supermarket

gsuberland, to random
@gsuberland@chaos.social avatar

no idea if it's actually causitive, but interestingly the grid frequency graphs for the UK last night show large measurement error bars around the times of the x-ray flux peaks measured by GOES.

jaseg,
@jaseg@chaos.social avatar

@gsuberland My guess is that the grid's wires picked up a bunch of noise, which threw off whatever made those frequency graphs. If those graphs come from a normal phasor measurement unit, those devices are very sensitive and do a lot of math to extract precise, low-latency synchrophasor estimates. I can totally see how noise on the input could throw that off.

arturo182, to random
@arturo182@mastodon.social avatar

I've never been much into robotics but seeing this #ifixit #teardown makes me want to build an open-source version of the Amazon Astro 😁

https://www.youtube.com/watch?v=g4z4i_XAV5w

jaseg,
@jaseg@chaos.social avatar

@arturo182 Modulo the amazon wants to watch you in your sleep issue this thing is awesome both in its hardware, and in the UX possibilities it brings.

jaseg,
@jaseg@chaos.social avatar

@arturo182 I imagine I could program it to read my Todos through CalDav, and physically follow me around the flat with any that are more than a month overdue.

mntmn, to random
@mntmn@mastodon.social avatar

did you ever encounter some RP2040 GPIOs just not... working? i.e. you tell it to output a logic high level, but the actual pin is close to GND? we have some pocket keyboards that are like that. there is no short on the board. so i'm wondering how this can happen. damage during soldering, handling?

jaseg,
@jaseg@chaos.social avatar

@mntmn @timonsku @Laberpferd If it's a blown ESD diode, the chip's current consumption should also be significantly higher. You might even see a difference when looking with a thermal camera.

jaseg,
@jaseg@chaos.social avatar

@mntmn @funkylab @Laberpferd @timonsku I have damaged MOSFETs before with a poorly grounded soldering iron which had ~90V to earth at several hundred microamps right on its tip.

sad_electronics, to Electronics
@sad_electronics@fosstodon.org avatar

Asking the bubble. For your maker needs, what is your experience with M.2 cards without chamfered edge?

jaseg,
@jaseg@chaos.social avatar

@sad_electronics I've used a bunch of non-chamfered boards for edge connectors, and I think it's fine for a few insertions. The specs on these connectors are often rather loose anyway. I've once managed to stuff a 1.2mm PCB into a nominally 1.0mm SFP+ socket.

k, to random
@k@layer8.space avatar

a person yesterday asked me, as i put my coffee on top of my (lid closed) laptop "are you not afraid that it'll break?".

sure, i do value my stuff and hope that my stuff lasts for long - but at the same time my stuff = a tool for me. if this laptop (Lenovo "ThinkPad" x240) couldn't last my use (throwing into a laptop without padding, being hurdled around, you know - setting coffees on top of it) - i don't think i'd still have it.

and the same goes for my phone, it too, has to last.

opinions?

jaseg,
@jaseg@chaos.social avatar

@k also an x240 will just, objectively, not break from a cup of coffee.

jaseg,
@jaseg@chaos.social avatar

@k I feel like this about my stuff too. That's why I have a cheap phone with a thick plastic bumper case and a glass screen protector, that thing goes flying at least once a day.

I find that repairing stuff also makes it less scary to break. The first time I broke a phone display I was really upset about it, but now, after repairing phones ~10 times, it's way less scary to drop one.

bleeptrack, to random
@bleeptrack@vis.social avatar

Hey barkeepers, liebe Tresenwesen!
Is there a good method to cool down liquids without diluting them too much? Thinking of: tea as a base for iced tea drinks. I usually shake them through ice.
I guess preferred would be cold brew but I currently don't have space for a big jug in the fridge :/

jaseg,
@jaseg@chaos.social avatar

@bleeptrack You can put it in a (heat resistant) plastic bag, then hold that under running water. Alternatively, put a heavy glass or mug into the freezer and cool it down with that. There's also "ice cubes" made from stainless steel that you put into the freezer, then dump in the drink.

jaseg, to linux
@jaseg@chaos.social avatar

So my just catastrophically self-destructed. I was using arch with the yubikey full-disk encryption package, when the machine hung and crashed during a system update. The machine crashed exactly after the old initramfs files were cleaned up, and before the new ones were written to disk. Since the yubkikey fde thing stores the seed ("challenge") for the luks key in the initramfs, all copies of the seed are gone now, and the data on that disk is unrecoverable.

jaseg,
@jaseg@chaos.social avatar

Update: The backup has worked and I have restored the system to working order with minimal data loss.

jaseg,
@jaseg@chaos.social avatar

Update to the update: The creators of the #arch #linux yubikey full disk encryption thing have responded to my bug report with what is essentially a shrug emoji and the line "I hope you had [a backup]".

I don't think that's an appropriate reponse from the maintainers of a critical piece of software like this. I think if you choose to release software like this, you have a responsibility to either make it good or to at the very least warn users that it's bad.

jaseg,
@jaseg@chaos.social avatar

Here's the github link. Please don't brigade the thread.

https://github.com/agherzan/yubikey-full-disk-encryption/issues/106

jaseg,
@jaseg@chaos.social avatar

@EA8DHY If they can't figure out the path automatically, just prompt the user.
With the mkinitcpio thing, I don't have the time to take on that fight. For me it doesn't matter if it's their tool or their upstream, the end result is the same: Their tool can't be used safely.

I believe they have the best intentions, but unfortunately the result sucks despite those good intentions.

crmsnbleyd, to random
@crmsnbleyd@emacs.ch avatar

https://mander.xyz/post/12646384 with alt text

jaseg,
@jaseg@chaos.social avatar

@crmsnbleyd Easy! Just don't download them and instead leave them to rot as open browser tabs

cccpresser, to Watches
@cccpresser@chaos.social avatar

Go home , you are drunk.

jaseg,
@jaseg@chaos.social avatar

@julialuna @cccpresser That, or going to a shittier board house. Last year, I've had a good experience with elecrow. They seem to care very little and just send whatevery you hand them straight to production.

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