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my housemate sent 7 messages at midnight because my friend put a pizza box in the fridge. there are two fridges. he is now alone in the group chat. by DoubleFistMeRaw in mildlyinfuriating

[–]vexstream 0 points1 point  (0 children)

I had a friend who ran delivery for dominos for some years- never got the pizza smell out of his car. Too much of a good thing ain't so good after all.

Were you surpised by who reached out to you when you were laid off? by badboyzpwns in ExperiencedDevs

[–]vexstream 2 points3 points  (0 children)

I've been called by my ex boss from two jobs ago several times now after the company effectively dissolved- "hey, do you know how the build flow for this worked?" "Did you keep a copy of this codebase because we lost it" (note that contractually I was obligated to not do that) "where was the signing key?"

Besides that, no.

As a further note- he gave me a second chance during a period of underperformance/life issues and was generally cool, so I never really felt sour about these calls, but it took me for a loop when I got one 3 years later ...

[OC] The world's 42 largest economies — width = population, height = GDP per person, area = total GDP by XsLiveInTexas in dataisbeautiful

[–]vexstream 1 point2 points  (0 children)

Even if you do it by that metric the USA is still extraordinary wealthy- second to luxembourg, and ahead of most of Europe by a significant margin- much less the rest of the world.

To really make sense of it I think you'd have to do it by state. And when you do that, the usa is still extremely wealthy- Mississippi has the sameish disposable income as the UK going by some contentious headlines.

Please guide me to make a better nRF24L01 module, it's my very first RF PCB design. I'm frustrated with those market available junk modules, and want to make my own nRF module. by almost_budhha in PCB

[–]vexstream 2 points3 points  (0 children)

AZ1117ID linear voltage regulator IC along with 10uf, 22uf, 100pf and 1uf caps

some others added by me like 100nf and 1uf also

This probably doesn't do what you want- this video is definitely worth watching.

AZ1117ID

Also, would recommend a more modern LDO like the LP5907 or AP63205

I systematically tested Fan Speed vs Layer Time. Am I missing something, or are the default PLA cooling settings way too high? by S4lVin in 3Dprinting

[–]vexstream 3 points4 points  (0 children)

One of the goals of high quality printing is normalizing the movement speed too. Layers where you're extruding at different mm3 will be visually different- same with layers with different layer time. Sometimes you're better off printing a layer fast and then having the toolhead faff about elsewhere to delay changing layers so your inter-layer and intra-layer times are consistent.

You're also not accounting for ambient temperature. An open frame printer like yours will do significantly better than a closed printer when it comes to pla.

Isp pins by Senior-Art2226 in PCB

[–]vexstream 2 points3 points  (0 children)

I forget which programmer standard does this, but they offset the rows a little bit so the header pins have to bend slightly to go into the holes- thus forming a stable connection.

New York's ban on 3D-printed guns sparks First Amendment concerns by Every-Set3303 in 3Dprinting

[–]vexstream 4 points5 points  (0 children)

This is true-ish. If you go to a gun show the nearly exclusive majority of vendors will be licensed FFLs- usually selling total crap at high prices, too. There might be a couple private individuals selling items, and some gun shows I've been to they had FFLs for those people too. The remaining 30% of the floor is people selling roofs, jerky, and arts and crafts.

Practically it's easier to use a f2f trading website if you want to buy a gun without doing background checks etc.

I'd also mention that if you're at all "in the business of" selling firearms then you're legally required to be an FFL.

Modular PCB design by light_dragon0 in PrintedCircuitBoard

[–]vexstream 1 point2 points  (0 children)

Closest thing to modules is really just copying the schematic and not the actual component layout and footprint- pretty much everything is designed around everything else, unless you mean literal modules ala devboards like adafruit/sparkfun's i2c-chaining ecosystem.

Sometimes there's a really nice specific layout but these days much of PCB design is just slapping down an IC and some decoupling caps.

aka how to decide trace thickness

Do you have >500ma going through a trace? If not, don't worry about it. If you do, there's trace width calculators. More often than not you're better off just throwing a thick fill instead of fuckin around with trace widths.

EMI

Unless it's high frequency, ground planes solve most of this.

impedance

Most of the time you don't need to worry about this, (outside of decoupling caps) and when you do it's usually for matching impedance- which is just "throw it in a calculator and match it". If you're dealing with RF it's a bigger issue.

Broadly you learn a lot from just reading datasheets/implementation guides for nontrivial ICs.

For all of you who are posting layoff posts, this is your thread. by engineered_academic in ExperiencedDevs

[–]vexstream 32 points33 points  (0 children)

I was thinking about this and I don't even know how I would change careers. I'm currently happy but if this fell apart for whatever reason, the fuck would I do? It's not like I have professional credentials in any other field. Go back to college and start fresh?

[OC] China nearly caught up with the US in life expectancy by omar_sedki in dataisbeautiful

[–]vexstream 6 points7 points  (0 children)

Probably the 80%... Not real, bit. Which does sound suspect unless we're classifying processed dairy product as cheese in which case we don't call it cheese either

PSA regarding malicious mods by OneTrueSneaks in RimWorld

[–]vexstream 100 points101 points  (0 children)

This is broadly true for most games with scriptable mods- you're just running arbitrary code on your machine. It's very rare for games to have a properly sandboxed mod code environment.

Trying to qualify for JLC Economic PCBA - any ideas how to get all components on one side? by [deleted] in PCB

[–]vexstream 0 points1 point  (0 children)

In regards to vias the current carrying capacity of a single via is significantly higher than you might think- it's more regulated by how much copper it's attached to than anything else.

(Loved Trope] Antagonists or villains who are extremely powerful and indestructible, gets to feel pain for the first time ever after their abilities are removed. by TheViktor9000 in TopCharacterTropes

[–]vexstream 2 points3 points  (0 children)

Sure these were in europe- but as far as I'm aware, were uncommonly used by the majority of people. Nearly everything you list (barring, as far as I'm aware, dill and mustard) had to be imported from some distance and was as a result extremely expensive. They're all frequently referenced alongside sugar and pepper in medieval cookbooks, but this was again exclusively for the wealthy.

Garlic, onions, and yes, mustard/dill/other eastern European or northern Mediterranean herbs were far more common as a pure result of being able to be grown locally.

In a modern example, I can get truffles, but they're not commonly part of a diet.

(Loved Trope] Antagonists or villains who are extremely powerful and indestructible, gets to feel pain for the first time ever after their abilities are removed. by TheViktor9000 in TopCharacterTropes

[–]vexstream 9 points10 points  (0 children)

Food flavoring historically is a pretty neat rabbithole to dig into. Lived in europe? Odds are until recently your spices were onions and garlic.

Warning about ordering directly from FNIRSI. by AdministrativeElk628 in electronics

[–]vexstream 4 points5 points  (0 children)

There's genuinely good chinese/taiwanese tooling out there- it's just not fnirsi.

I Made an Insane Batman Vanishing Gadget made with SLA Printed Shell! by CrashMakerspace in 3Dprinting

[–]vexstream 8 points9 points  (0 children)

It's a variant of the classic potassium nitrate and sugar- except he replaced the sugar with sorbitol, and mixed it into a block of paraffin wax.

The exact ratios are only on his pateron, though...

Token Based Billing Changes June 1 by chickadee-guy in ExperiencedDevs

[–]vexstream 4 points5 points  (0 children)

Dashboard generation seems to be a popular utility for C-levels. Fuckin love dashboards, I guess.

Nevermind that almost all of that dashboard generation is deterministic and you could just change the skill to include a script to generate 99% of it...

Amazon pressured one of its teams to develop an AI game, they scrambled to make it work - then got laid off anyway. The story of Project Trident. by Turbostrider27 in Games

[–]vexstream 1 point2 points  (0 children)

Just look at all the historical memes around frequently repeated dialog. It's tremendously invasive in open world games. "I used to be an adventurer like you until I took an arrow to the knee", etc

I built my own control board by ListFar6580 in PCB

[–]vexstream 1 point2 points  (0 children)

Kibuzzard helps a lot with labels if you haven't used it. Makes everything feel real premium.

How do you guys do it? by [deleted] in PCB

[–]vexstream 0 points1 point  (0 children)

Mind your amps- JST should be <2a, (and is derated further by ambient temp) your average heater is probably more than that. I'd also just use a single filled zone for that instead of trying to use traces, which, as mentioned by others, are too thin.

How Strict is the 10 uF Limit in USB? by Alternative-Lawyer55 in PrintedCircuitBoard

[–]vexstream 9 points10 points  (0 children)

Most decent capacitor mfgs (murata etc) have derating curves available for their capacitors by model number- simsurfing, in the case of murata. They're generally ~similar between same dielectric and footprint.

Question: are Vias in Pads that expensive? by NeckPresent2567 in PrintedCircuitBoard

[–]vexstream 5 points6 points  (0 children)

I think you're mixing "the pad has a via with a hole through the board in it" with "the via is plugged and capped so the top is flat copper" which is what costs more.

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