Chris Petrilli

#BlackLivesMatter. Social Justice _________. Nerd. General trouble maker. Architectural astronaut with a leaky suit. Do something with security. NB Pronouns: he/she/him/her. PNW

blog: https://blog.amber.org
github: https://github.com/petrilli
signal: @petrilli.01
maker resources: https://lab.rebma.io

Public Key

npub175vhydax5etne4ewpzqzx5r29zkfjxatzcjerfr9ayuwrq0fpqyqkjt5n0

NIP-05 Address

petrillic_at_hachyderm.io@momostr.pink

Profile Code

nprofile1qqs02xtjx7n2v4eu6uhq3qpr2p4z3tyerw43vfv353j7jw8ps85sszqj9hk09

Author Public Key

npub175vhydax5etne4ewpzqzx5r29zkfjxatzcjerfr9ayuwrq0fpqyqkjt5n0

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Last Notes

2024-09-01 21:43:15

I feel like I should download every datasheet for every chip/passive I have in my workshop. Just in case? Is this really an issue, or am I just being stupidly paranoid?

2024-08-30 00:25:26

OK, who keeps stealing my Python venv for Zephyr?

2024-08-29 23:06:03

Some people’s obsession with AGI tells you more about their understanding and conceptualization of “intelligence” than anything else.

2024-08-29 22:39:05

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ampacity? That’s all I can think of.

2024-08-24 21:00:53

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one of the reasons I bought the Sony RX-10IV was for the glass. 24-600mm f/2.4-4. It’s my favorite travel camera.

2024-08-24 20:58:27

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I totally understand. I covet thy neighbor’s glass.

2024-08-24 20:56:08

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does it feel more affordable if you compare it with the Leica f/0.95? https://www.bhphotovideo.com/c/product/586190-REG

2024-08-24 03:07:54

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could be worse. Could be Le Crueset.

2024-08-19 04:13:20

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I've thought of seeing what I can design and then use SendCutSend to fabricate. Can strip a lot of the bits away from the commercial stuff potentially, but don't know if it'd be cheaper honestly.
Some parts like card guides aren't that expensive to just buy, but maybe they could be designed to be 3d printable.
It's just a lot of yak shaving.

2024-08-19 03:54:55

I really wish more places made Eurocard subrack enclosures. Schroff stuff is nice, but $$$. There's a few on Alibaba, but seem to have a minimum order of 10-100, which is more than a poor hobbyist like me needs.

2024-08-18 01:56:44

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“There must be in-groups whom the law protects but does not bind, alongside out-groups whom the law binds but does not protect” — Wilhoit
This is why people who think “something is legal” is equivalent to “something is moral/ethical” are so damned dangerous.

2024-08-18 01:52:26

Make Trump and Vance the anchor that permanently sinks the entire party to the bottom of the ocean.

2024-08-10 21:56:03

I need a cutesy name for a carrier board that you plug an off the shelf MCU board into and which has lots of extra peripherals on it.

2024-08-07 18:34:45

Cursed idea: Kubernetes on a cell phone

2024-08-06 02:32:52

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Also a reminder that someone’s skill in area A do not necessarily translate to area B. As always, physicists tend to be the worst at this.
Spherical cow and all that.

2024-08-06 02:26:39

I assume one of JFK Jr’s brain worms has been eating the brain of John F Clauser and his current batshit bonkers climate denial.

2024-08-05 21:41:41

Every time I read about some deeply toxic behavior in an open source community, I am reminded of the saying “culture isn’t what you encourage, but what you tolerate”.
If you tolerate toxic assholes? That’s your culture.

2024-08-04 05:59:09

[@mos_8502](https://studio8502.ca/@mos_8502 ) what's the reflow hotplate you got?

2024-08-03 23:23:37

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yeah I keep a syringe of ChipQuik gel around for rework and such.

2024-08-03 23:21:27

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will give it a try. Always looking for a new trick.

2024-08-03 23:18:59

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these.
https://media.hachyderm.io/media_attachments/files/112/900/645/481/966/320/original/6101539c1b7f1a84.jpeg

2024-08-03 23:12:53

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do you like those over the normal acid brushes?

2024-08-02 01:01:52

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just give it a wash in brake cleaner. It’ll be fine.

2024-08-01 21:16:17

When companies do layoffs, all executives should immediately have to return 100% of all stock proceeds and bonuses for the preceding year. And all stock buybacks cancelled for 5 years.

2024-07-29 02:08:28

Oh yes a flower I saw today. I have absolutely no idea what it is. Pretty though.
https://media.hachyderm.io/media_attachments/files/112/867/338/108/487/009/original/4c33878d5bd81948.jpeg

2024-07-28 19:03:44

First real blackberries of the season. Not many but they’re just starting to ripen.
https://media.hachyderm.io/media_attachments/files/112/865/668/019/406/752/original/f64f78d083624bd6.jpeg

2024-07-28 02:10:50

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I’m not sure how it is in EU but I feel like the US houses have basically given up on commodity PCB and are focused on HDI, class 3 work, RF, and such. But a regular 1.6mm 4 layer FR4 board? Nah.

2024-07-28 02:01:44

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I would happily pay 2x for domestic production but outside OSHpark for tiny boards in limited situations, when I’ve talked to places it’s more like 5-10x. That’s a difficult pill to swallow.

2024-07-27 23:54:06

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and it amazes me how cheap 4+ layer boards have gotten and how easy to get aluminum core and such. All the “exotic” stuff is now just a click away. Want an 8 layer board with ENIG, edge plating, and heck make it 1.2mm? Push button.

2024-07-27 23:22:31

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I’m continually flabbergasted by how cheap even quality passives are.

2024-07-27 21:43:38

I would argue they’re creating most of those delimas. https://infosec.exchange/@patrickcmiller/112860628330444752

2024-07-27 20:48:10

Don’t judge. Just started reading a book on “modern C”, specifically C23, and it’s an interesting look at how much had changed. Sure it’s still a super problematic language, but when I do embedded work it’s really the least friction.

2024-07-26 19:58:58

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this slide triggers PTSD

2024-07-26 19:35:50

Just the thoughts of some white dude, but… Black Twitter is absolutely a thing. It’s a huge thing. If you’ve not seen and understood it, well that says something about your circles. My black friends who have stayed on Twitter have done so because of this. it comes with a lot of downsides in supporting Musk, but so does losing that community.
I can’t speak to toxicity, I’m not the recipient, but when someone says “here is my experience” it’s your job to listen to them. Fix it.

2024-07-25 01:16:07

Unless Twitter has completely rewritten every aspect of their identity and authentication system since I left, this is total bullshit.
Don’t get me wrong, I absolutely believe Space Karen protects fascists at all costs, but this ain’t it.
Twitter did (does?) use Okta for corporate stuff, but none of this is that. https://hostux.social/@defcon201/112843893371505671

2024-07-24 22:59:24

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boutique electron wrangler

2024-07-24 04:35:35

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I mostly do 0805, but 0402 sure is handy for decoupling in tight to the lead. But my success wait with hand soldering them is … well it’s good they’re cheap.

2024-07-24 04:32:29

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I’m no expert but I’ve had better luck taking everything out of the reels and putting them in Aidetek boxes. Especially passives.
With the tape I had a very high “fuck where did it go” ratio.

2024-07-22 02:32:04

Manchin might be even less likable than Joe Lieberman.

2024-07-21 05:46:18

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oh no. Medicare is a horror show. I’m so sorry.

2024-07-21 05:43:14

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oh no. That’s such a horror to have to deal with. The facility my partner is at has been very good, but there’s not a skilled nursing facility.
Let me ask around.

2024-07-20 00:10:35

Contemplating buying a hand grinder to go with my Aeropress for travel. I am dubious of the quality of coffee in Frisco, TX.

2024-07-19 22:51:38

I wish Windows would steal eBPF. It’s far from perfect but if at least provides a pretty well thought out environment to do kernel-level stuff. Fewer foot guns.

2024-07-19 17:53:26

This isn’t far off.
https://media.hachyderm.io/media_attachments/files/112/814/430/721/335/901/original/4b15063efb01ddf6.jpeg

2024-07-18 15:30:25

This isn’t even a Kool-Aid cult. This is a generic off-flavor sugar drink cult.

2024-07-17 21:55:04

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Something has not set well with me on this. I asked the nurse if this was documented. It was not. I asked if she would document it, and she was very reticent, saying she'd have to get approval.
Spider senses don't like this.

2024-07-17 18:10:39

Whew. Call from the facility about my partner, who is becoming increasingly combative with staff. Sigh. He doesn’t exhibit that with me but I understand that’s different.

2024-07-15 23:43:26

A reminder that the boot you're licking is the boot that will eventually be on your neck as well.

2024-07-12 02:45:01

Amazing watching Democrats absolutely commit to throwing this election to the fascist.

2024-07-02 18:23:20

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if I am ungenerous, I would say because often people are more concerned with being "right" than being effective, and down deep, they believe their multitude of privileges will save them.

2024-07-02 18:21:34

At least the most passionate members of both political parties can agree on one thing: they both want the Democrats to lose.

2024-06-29 04:00:48

Martin Mull at his comedic best in a cast of comedic giants. https://youtu.be/K6Eo1K2abN0

2024-06-21 23:35:55

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yeah QFP are fine. 0.5mm a little more challenging but lots of flux and drag soldering with a small horseshoe tip makes it reasonable.

2024-06-21 23:30:23

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I am absolutely terrified of BGA devices at this point. I’ve done some wacky QFN but… BGA just seems daunting.

2024-06-21 23:20:45

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link?

2024-06-21 21:10:22

THIS TOOT INTENTIONALLY LEFT BLANK

2024-06-19 16:10:15

CW: language.
“Everyone is talking about Retrieval Augmented Generation, but most companies don't actually have any internal documentation worth retrieving.”
https://mastodon.sprawl.club/@ludicity/112641685611188242

2024-06-18 16:34:24

The number of Gen X peers I know who are all “yeah I’m probably non-binary/genderqueer/etc” is a reminder that visibility matters. I had minimal struggle with being gay because my mom had openly gay friends and it all seemed like “just another path”.

2024-06-17 18:25:35

Pretty pretty test points.
https://media.hachyderm.io/media_attachments/files/112/633/363/247/727/091/original/23b2d01b99826b5d.jpeg

2024-06-15 03:14:57

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it’s also that green/yellow is earth ground not neutral. I have a small bus under the desk for all the T&M equipment and soldering iron.

2024-06-15 03:01:43

Oh no. I think I just saw someone use green/yellow wire for live on mains.
:backs away slowly:

2024-06-14 16:15:59

Now wondering if it'd be worth trying to cobble together my memories of the long-term tsable archive system I worked on and the neat SCSI front-end that created time-travel WORM capabilities out of R/W and WORM devices.

2024-06-14 01:10:42

I forget who said it but .. Stanford University is just 7 intellectual property lawyers in a trench coat.

2024-06-13 23:49:03

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maybe this will finally end asking people for salary history.

2024-06-12 02:34:57

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they actually demo it on RISC-V. I’d be shocked if it’s more than those two. Maybe xtensa?

2024-06-12 02:28:08

Huh. Official embedded Swift. https://youtu.be/LqxbsADqDI4

2024-06-12 00:53:02

Go watch @npub13m2…z22q talk about her amazing KiCanvas tool for visualizing KiCad on the web. https://youtu.be/WAbutgTGjWg

2024-06-11 23:03:10

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cool. Definitely different than the 6502. Super neat trick.

2024-06-11 22:56:51

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what are you using to do that? Neat.

2024-06-11 19:58:04

As a child of the 1980s I feel this. But shouldn’t they be Ocean Pacific corduroy shorts? Just me then?
https://media.hachyderm.io/media_attachments/files/112/599/753/072/915/380/original/6b8e5fe1d0aac40d.png

2024-06-07 19:21:23

Pride
https://media.hachyderm.io/media_attachments/files/112/576/959/533/138/641/original/94333971488d7f5e.png

2024-06-05 02:47:50

This is likely the most horrifying … I hesitate to call this word salad a thought … shit I’ve read today. And maybe this week.
https://media.hachyderm.io/media_attachments/files/112/561/728/192/864/607/original/81d2a3dd99ae2264.png

2024-06-05 02:42:04

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I think I need to add some JST connectors. Hmmmm I am running low.

2024-06-05 02:34:56

Do I press the button to buy everything in my LCSC cart?

2024-06-01 04:13:14

Your annual reminder that Pride didn’t start as a parade. It was a riot.

2024-05-31 04:50:48

Fascists being fascists. https://mastodon.social/@SteveThompson/112533566598580404

2024-05-30 21:33:57

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The quote.
https://media.hachyderm.io/media_attachments/files/112/532/182/355/948/792/original/b5797f666be6b664.jpeg

2024-05-30 21:31:30

There is a quote from Professor Plum in Clue that comes to mind in just such a moment.

2024-05-30 21:14:58

I am actually surprised. Not sure it changes much sadly.

2024-05-25 17:16:54

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how do you get that black line to show in 3d?

2024-05-24 21:59:54

One of my favorite interview questions is “walk me through the threat model that full disk encryption solves”.
Whew.

2024-05-24 00:25:32

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how is pricing? I often look at them, and the pricing is ... a bit absurd.

2024-05-20 22:52:38

Given their behavior, it's hard to believe any of the major "AI" players have a single moral fiber between them all.

2024-05-20 00:31:12

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how much current do you need?

2024-05-19 18:08:47

https://media.hachyderm.io/media_attachments/files/112/469/090/201/110/474/original/99d8609db64748c2.jpeg

2024-05-18 00:16:15

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wait, this might actually be a use for the "Eagle" side of Fusion... just do the design in the 3D model side, and then pull it in and ta'da.

2024-05-17 20:21:25

Designing PCBs to be used purely as front panels... I wonder if it'd be possible to go directly (somehow) from Fusion to Gerbers.

2024-05-16 16:54:03

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why does this remind me of X11 terminology?

2024-05-14 23:21:41

Little bit of a write-up of my first switch-mode power supply. It didn't explode! It also doesn't generate the best quality of power, so there's work to be done.
https://hausrack.rebma.io/updates/2024/05/14/first-oscillation/

2024-05-14 20:29:52

Something I would love to exist, and it makes sense to be in video format, is walkthrus of laying out PCBs of various types by people with many years of experience professionally. The amount I learn by just seeing how other people do things...

2024-05-14 17:35:53

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it's like living next to a meth addict and with a cocaine addict

2024-05-13 21:58:16

New pokey springy thingy arrived.
https://media.hachyderm.io/media_attachments/files/112/436/018/700/379/931/original/5da414ffea14ba37.jpeg

2024-05-10 17:57:10

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I mean that’s probably not that bad a thing. I’ll often sit in the dining room that looks out through a big window at the front porch. Just in case.

2024-05-10 17:54:48

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one reason I have cameras. Whew. Fortunately lately the drivers aren’t the “ring the bell and run like hell” kind.
That reminds me. My Sencore adjustable isolation transformer is due today!

2024-05-10 15:25:53

If we weighed the heart of your product against that of a feather, would it be found wanting?

2024-05-09 21:50:31

The violence inherent in the package.
https://media.hachyderm.io/media_attachments/files/112/413/338/946/283/036/original/ab222df634274c51.jpeg

2024-05-09 01:53:33

Whew. Someone asked on an open forum for advice on solder. Behold the opinions!

2024-05-08 23:27:28

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Corrolary: Hire mostly PhD, get mostly PhD research problems.

2024-05-08 22:36:10

If Google does it, that’s probably a strong indication that it’s a bad idea for your situation.

2024-05-07 17:30:12

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meant to suggest, I have a Focusrite Scarlett setup and it's great.