Chris Petrilli

#BlackLivesMatter. Social Justice _________. Nerd. General trouble maker. Do something with security. Pronouns: he/him.

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

[email protected]

Profile Code

nprofile1qqs02xtjx7n2v4eu6uhq3qpr2p4z3tyerw43vfv353j7jw8ps85sszqpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dscsjkkc

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub175vhydax5etne4ewpzqzx5r29zkfjxatzcjerfr9ayuwrq0fpqyqkjt5n0

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Last Notes

2024-08-18 03:56:44

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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.

2024-08-05 23:41:41

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.

2024-07-25 03:16:07

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

2024-07-21 07:46:18

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

2024-07-20 02:10:35

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

2024-07-16 01:43:26

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

2024-07-08 18:10:35

The world has far too many useless metrics. So many metrics that exist because they are easy to collect, but fail to pass (to me at least) the basic test of:
1. How does this tell me whether things are good or bad, trending where?
2. How does this help me make a decision to drive #1?
Me = whoever your target consumer for the metric is.
Do people have any other simple rules for judging metric quality?
Oh, and I find absolute numbers are typically largely useless in security.

2024-07-05 21:22:19

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Like… I want a computer that’s in a beautifully crafted cherry cabinet with lovely nickel hardware.

2024-07-04 21:34:25

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I wonder who makes larger 4:3 LCD panels still? This is the correct ratio.

2024-07-04 21:31:31

I have a weird urge to design a VT320ish modern terminal with flatscreen and mechanical keyboard. Still just a terminal.
Maybe integrate some of the wacky features of a 3290.
Come to think of it.. more of a 3290 that’s VT320 compatible.

2024-07-03 05:01:33

Someone just told me they don’t have a set of favorite connectors, and I just don’t know how to deal with this information.

2024-07-02 22:42:02

There's nothing so ... exhausting ... as reading audio electronics forums.

2024-07-02 20:21:34

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

2024-07-01 19:02:20

Gone is the time of Pride; now is the time of Wrath.

2024-06-29 06:00:48

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

2024-06-25 06:39:48

At this point it’s been over a month since I’ve managed any focus to deal with any one of my innumerable in-flight projects. It’s a toxic mix of ADD, stress about certain challenges at work, annoyance at my partner’s mom, and general depression from all that as well.
This whole adult thing was seriously misrepresented.

2024-06-23 04:32:43

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no shortage of bonkers options.

2024-06-23 04:26:34

I swear I could probably talk about all the weird and wonderful connectors for a long time.

2024-06-22 01:35:55

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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.

2024-06-22 01:30:23

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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.

2024-06-22 01:20:45

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link?

2024-06-21 23:10:22

THIS TOOT INTENTIONALLY LEFT BLANK

2024-06-19 18:10:15

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 18:34:24

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 20:25:35

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

2024-06-15 05:14:57

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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 05:01:43

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

2024-06-14 18:15:59

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 03:10:42

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

2024-06-14 01:49:03

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maybe this will finally end asking people for salary history.

2024-06-12 04:34:57

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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 04:28:08

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

2024-06-12 02:53:02

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

2024-06-12 01:03:10

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

2024-06-12 00:56:51

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what are you using to do that? Neat.

2024-06-11 21:58:04

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 21:21:23

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

2024-06-05 04:47:50

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 04:42:04

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

2024-06-05 04:34:56

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

2024-06-01 06:13:14

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

2024-05-31 06:50:48

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

2024-05-30 23:33:57

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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 23:31:30

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

2024-05-30 23:14:58

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

2024-05-25 19:16:54

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

2024-05-24 23:59:54

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

2024-05-24 02:25:32

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

2024-05-21 00:52:38

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 02:31:12

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how much current do you need?

2024-05-19 20:08:47

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

2024-05-18 02:16:15

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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 22:21:25

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 18:54:03

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why does this remind me of X11 terminology?

2024-05-15 01:21:41

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 22:29:52

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 19:35:53

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

2024-05-13 23:58:16

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

2024-05-10 19:57:10

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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 19:54:48

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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 17:25:53

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

2024-05-09 23:50:31

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 03:53:33

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

2024-05-09 01:27:28

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

2024-05-09 00:36:10

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

2024-05-07 19:30:12

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

2024-05-07 02:43:08

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the thing is, it’s not just labor, the entire industry is critically dependent on immigrants as knowledge workers

2024-05-07 02:35:27

The starvation would be enormous. But I suspect they know that … cruelty is the mechanism. https://mastodon.social/@tusk81/112396720861868677

2024-05-06 23:05:16

Every freaking time I’m not super careful with package sizes. I’m not sure if I can even solder these TVS diodes.
https://media.hachyderm.io/media_attachments/files/112/396/174/104/518/759/original/0b287f7ecf7a0699.jpeg

2024-05-06 20:08:39

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what if... a VT100, but the enter key just says "Witness Me"

2024-05-06 20:08:17

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I read this as "nitrous oxide serial terminal" and I felt like that was a very Mad Max terminal.

2024-05-03 21:51:30

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I dunno, as a passable machinist, I'd say it's more like a manual machine with electro-shock therapy if you try to do the wrong thing.
I'm no Rust expert, and have only done some minor things, but it feels like a system that makes it wildly harder to do the wrong thing, but not significantly easier to do the right thing.

2024-05-03 19:11:28

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I think it's also marginally less terrible if you actually leverage modern* C/C++ capabilities
* C17 or C++20

2024-05-03 17:30:21

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posted the KiCad files and linked to them. https://github.com/rebma-io/hausrack/tree/main/hardware/pcb/backplane
super simple

2024-05-03 05:40:09

Quick write-up on the backplane design for the home automation project. https://hausrack.rebma.io/updates/2024/05/02/a-bus-is-a-bus-of-course-of-course/

2024-05-03 00:01:30

I'm not saying Boeing murdered the whistleblowers. I'm saying try not to run a company such that people think you MIGHT have.

2024-05-02 23:59:54

I want to live in a world where @npub1hp6…raya is designing computers for everyone.

2024-05-01 02:02:42

I don’t know how much clearer they can transmit fascism. It’s brutally clear and yes, your friends and family that support them at this point are fascists. https://press.coop/@NPR/112361945767154783

2024-04-30 01:09:02

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this is the madness ... those are 0603 and 0402.
For 6A!
https://media.hachyderm.io/media_attachments/files/112/357/023/474/320/033/original/7f84ad4cfbd4b06d.png

2024-04-30 00:26:47

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whew :) F-ing TI

2024-04-30 00:20:57

I wonder what the probabilities are of me soldering a 2mm QFN package properly?

2024-04-29 00:10:48

Have I thought of falling down a rabbit hole and designing a small hobbyist level wave soldering station?
Yes, yes I have.

2024-04-26 01:04:36

It's always fun running through electronics magazines from the 70s and 80s.

2024-04-25 02:48:02

Sometimes what the body wants is a big bowl of carbs.
https://media.hachyderm.io/media_attachments/files/112/329/102/309/770/851/original/9d11d54397faafd8.jpeg

2024-04-21 21:09:10

A friend just called Space Karen “Cyber Boer” and… whew.

2024-04-21 20:02:13

Weirdly reminded of that time I bought a “six pack” expansion card for my 5150 PC from Michael Dell personally. Not sure if he’d even started using PC’s Limited as a name yet.

2024-04-19 04:33:29

Anyone complaining about Python packaging has never dealt with embedded tooling.

2024-04-17 19:33:19

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I am, alas, sans pie hangouts nearby.

2024-04-17 19:30:16

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making me miss Dangerously Delicious Pies in the DC area. Mmmmmmmm

2024-04-16 01:12:18

No idea if this is interesting to anyone, but over the last day or so, I've pulled together a Cookiecutter template for setting up a hardware project. This is based on what I've been doing, and I've tried to generalize it.
I find thinking easier when there's some framework in place.
https://github.com/rebma-io/hw-project-cookiecutter

2024-04-15 18:56:28

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AWWWWWWWWW

2024-04-14 23:59:32

I am still agape that I can (online) order a somewhat complicated PCB from a decent manufacturer, have it manufactured in under 48h, and shipped to me for less than a meal at Wendy's.

2024-04-13 21:17:08

The “AAA gaming industry” is why I quit gaming.

2024-04-12 23:55:18

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cute as a button

2024-04-12 23:40:51

It’s not goodbye it’s just aufwiedersehen.
https://media.hachyderm.io/media_attachments/files/112/260/418/623/062/485/original/d6ca39617fc4e7ad.jpeg

2024-04-12 01:57:07

The only debate I wish to have about my trans friends is whether they're awesome, or super awesome.

2024-04-10 03:42:00

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this reminds me of something someone told me that really stuck… ideas are reusable, code rarely is.

2024-04-10 00:30:33

Once more unto the breach…
Care conference for my partner. Nursing, neurologist, social worker, others. Regrouping with where things are and where they are headed and how we make the best of an absolute shit situation.

2024-04-09 19:33:12

Super annoying... somewhere I have a container that has all my different little rubber feet for things. Like a dozen different kind... WHERE DID IT GO?

2024-04-09 04:47:47

RS-485 over IP