@attie@chaos.social
@attie@chaos.social avatar

attie

@attie@chaos.social

computer booper / electronics wizard.
things are never as simple as they first appear.
ally 🌈🦕🦄

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attie, to random
@attie@chaos.social avatar

I'm intrigued... what score do you get, and what input device did you use?

Apparently ~10 BPS is typical.

https://neuralink.com/webgrid/

attie,
@attie@chaos.social avatar

... I scored 9.98 BPS with a cheap mouse

I'm delighted to hear that Noland has achieved 8.01 BPS... slowing myself down doesn't feel frustrating or slow, which is awesome!

0x47df, to random
@0x47df@duckpon.de avatar

im actually really scared of lots of people at emf because they know lots and i'm thinking i don't know much and i don't have a thing i just exist and vibe along to whatever looks cool but i don't actually know lots and even if i wanted to i can't

attie,
@attie@chaos.social avatar

@gsuberland @0x47df Much sadness that I'm not coming (again 😢), but if I were, I would likely be empty handed!

foone, to random
@foone@digipres.club avatar

I wonder if you can make jewelry-safe PCBs.

I was thinking you could make a flexible-pcb choker. My neck can run Doom!

attie,
@attie@chaos.social avatar

@gsuberland 👀

attie, to random
@attie@chaos.social avatar

HELP!!

Panda, Hedgehog(?), Cow, Dog, Dog, Dog...

These all have brains, right? clicks skip.

Ohhh, it's not a hedgehog, it's a SOFA...?! 🤦‍♀️

... oh, damn.

Another variant of the image... the thing that still kind of looks like a hedgehog, might now be considered more sofa-esque.
A final screenshot stating "It looks like something went wrong"...

attie,
@attie@chaos.social avatar

I clicked the "I am human" box with my mouse this time - it decided that was proof enough... apparently using tab and spacebar makes me sus.

gsuberland, (edited ) to random
@gsuberland@chaos.social avatar

[serious, no joke replies or guesses / autotranslation please]

do I know anyone native or otherwise very fluent in Chinese who can tell me the correct term for a plated edge connector, like you might find on a PCIe card? specifically the "gold fingers" style connector feature you would find on the PCB side, not the plastic connector it slots into.

I've had an absolute nightmare trying to communicate this feature to a Shenzhen-based PCB vendor and I would like it to be easier in future.

attie,
@attie@chaos.social avatar

@gsuberland Out of interest, have you got something back from them that indicates they're misunderstanding?... and what is the issue at play? Confidence in communication?

Is it around specifing the hard-gold plating? (not the chamfer, as mentioned in your post below?)

attie,
@attie@chaos.social avatar

@gsuberland No worries - please feel free to ignore if I'm another annoyance.

attie,
@attie@chaos.social avatar

@gsuberland Gah, very frustrating... 😢

azonenberg, to math
@azonenberg@ioc.exchange avatar

Ok, this one is for the discrete gurus out there.

Let N = CRC32(X)

Given N, is it possible to efficiently calculate CRC32(concat(X, Y)) where Y is a known sized, but very long, sequence of 0xFF bytes?

Obviously you can just seed the CRC with N and iterate, feeding 0xFF in each cycle, but is there any kind of shortcut you can take if you know the input is always a 1 bit?

attie,
@attie@chaos.social avatar

@azonenberg Would it not be far preferable to somehow capture and encode the length of X inside itself?

For example, place a uint32 right at the start, or at some predefined place close to the start (e.g: if you have startup code / interrupt vectors at the start)...

attie, to random
@attie@chaos.social avatar

Font size 710?... sounds reasonable.

Always makes me chuckle, even if it's incredibly frustrating that Ctrl+A doesn't work in so many places (i.e: it was originally "7", and I tried Ctrl+A, then typed "10")

attie,
@attie@chaos.social avatar

@deshipu I must admit, I've not used a Linux desktop environment for a long time (even though I'd consider Linux systems to be my comfortable place)... but I thought there were two "clipboards" - one for select + middle-click, and a separate one for Ctrl-C/Shift-Del and Ctrl-V/Shift-Ins ... am I misinformed? I'd have presumed that the "select all" action didn't affect either, but if it did, then only the former?

attie, to random
@attie@chaos.social avatar

For the longest time, I thought I was just fluffing my mouse movements... "aim better", etc...

Gmail keeps adding files to my Drive, and I do not want that... now I have to wait for it to finish, go and find it, move it to the trash, and then "delete forever".

But NO! I CLICKED ON THE DOWNLOAD BUTTON!

I clicked on the download button, and it added it to Google Drive. The "Organise in Drive" tooltip is showing! 😡

I smell a tampermonkey script coming.

attie,
@attie@chaos.social avatar

While they're at it, they could also fix the Ctrl-Shift-5 and Ctrl-Shift-6 shortcuts which haven't worked properly for a long, long time...

attie, to random
@attie@chaos.social avatar

Today I learned that iOS browsers can't render HEIC files (at least from what I read).

I also learned that they'll magically convert HEIC files to JPEG, when selected from "photos", but apparently not when selected from "filesystem"... which is ew, but I can't decide if browser-can-render trumps the lossy conversion when it comes to "originals" being uploaded.

I ALSO learned that... PNGs (e.g: screenshots) are converted to JPEG automagically as well.

Lovely.

Please correct me if I'm wrong.

attie, to random
@attie@chaos.social avatar

I'm looking for some self-host / open source software to allow people to upload misc files, along with a description.

Description of what I'm after below... NextCloud (which I'm already using) is awkward because I'd need to produce one link per recipient.

attie, to random
@attie@chaos.social avatar

Schematics are a form of communication... So communicate!

There's nothing worse than a mystery box, with signals going in, and signals coming out... and no explanation.

Being forced to reach for the datasheet, when you're trying to understand a schematic is bad. Avoid it.

A screenshot showing the bridge IC itself, with the LVDS waveform and its slots. Each position is labelled with the associated output of the bridge IC.

attie,
@attie@chaos.social avatar

@jaseg Agreed! ... though I'm quite proud of my mounting holes! 😂

gsuberland, to random
@gsuberland@chaos.social avatar

PSA: many USB UART adapter boards and cables tend to fail because they're literally just an FT2232 (legit or clone) or CH340 chip under the hood with the pins broken out to a header. this is true of the cheap AliExpress ones and most branded options too.

they have almost no protection against ESD, overcurrent (e.g. TX short to GND), overvoltage, or ground loop issues. they're non-isolated so ground voltage deltas can mess them up too.

look for an isolated model for higher reliability:

attie,
@attie@chaos.social avatar

@gsuberland I've generally found that genuine FTDI parts fare much better in the longer term (and with less careful hands) than most of the other / cheaper options.

I worked with someone a while ago who had problem-after-problem, until I encouraged them not to just buy a random cheap widget and get a "real" FTDI one instead.

If I had the choice and budget, I'd pick an FTDI over others. Optos are a bonus.

attie, to random
@attie@chaos.social avatar

I have so much music in my life, but I also feel like I don't have nearly enough. 😢

I'm trying to figure out what's going on here... but can't. I definitely miss working as a sound engineer for live music events (bands and musical theatre), even DJ sets were very fulfilling for me.

... is this "out loud" vs headphones (almost exclusive for some years now), or about the atmosphere, purpose, team work, common goal of such events.

... is this because I can't sit down and play (e.g: piano)

attie,
@attie@chaos.social avatar

@gsuberland "enveloped in sound" is such a good way of putting it. Headphones so don't work for this, as it's all head, and no sub-bass in your body (for example). I very miss feeling my music.

One epic experience was being in a club in Bristol with the resident tech while it was closed. It sounded so incredibly pure and effortless... their system just did stuff. 😢

gsuberland, to random
@gsuberland@chaos.social avatar

the supermarket meal deal: saviour of the ADHD'd

attie,
@attie@chaos.social avatar

@gsuberland gah, now I want a curry-in-a-box 😭 (different kind of meal deal, but that's where my brain went after your first few words)

attie, to random
@attie@chaos.social avatar

An STM32 NUCLEO board, with an onboard ST-Link... connected to st-util... connected to arm-none-eabi-gdb.

load - fine
cont - fine
^C - program appears to reset...

Is something going wrong for me, or should I be able to debug this in a normal way?

All sorts of other things appear to be behaving weirdly too. 😢

I'd really like to figure out why this firmware appears to be hanging while mounting a filesystem over 4-bit SD/MMC, but is fine with 1-bit...

attie, to random
@attie@chaos.social avatar

So close! The internet points are real! 😀

attie,
@attie@chaos.social avatar

@gsuberland

> stackexchange gamification is one helluva drug

heh, it really is... and I've learnt a lot from the possibly familiar sequence:

I can answer this! ... wait... can I? ... woah, I didn't understand this nearly as well as I thought... ✨ANSWER+KNOWLEDGE!✨"

> in my prime I think I maxed the rep cap every day for several months

wow, good going!

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