@RubberElectrons@lemmy.world cover
@RubberElectrons@lemmy.world avatar

RubberElectrons

@RubberElectrons@lemmy.world

Just a shiny male toy…

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RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Sorry, fellow me/ee, disagree on complexity, having worked directly with both. Advantage of mechanical systems: theoretically predictable action, repeated endlessly so long as torque at the tires is req'd. Reality: tolerances in various parts open over time, resulting in a nonlinear decrease in efficiency and power. A symphony of hundreds of bolted joints, springs, tappets and valves, a sum of thousands of parts dancing while a complex ECU watches over the system. A single part or joint far enough out of tolerance will cause very, very expensive damage.

Battery powered vehicles: motor has full torque at close to zero RPM, all components in the control system are solid state, and software (always updateable) handles control decisions. Electric motor has 6 to 30 parts, based on whether liquid cooled or air cooled.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Hear hear.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Technical magic???

BMS systems are far from it. Lots of technical work going into simplifying measuring techniques, automatic switching between series parallel linking of cells based on system needs (at my company)... but the essentials of measuring current, thermal and voltage? Lmao. I'm making fun of your degree, as a holder and EIT myself.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Sorry, I have designed complex 4 and 6 layer high speed FPGA boards, this BMS board looks moderately dense but not crazy, nor does it look like it's dealing with high speed signaling.

Try dealing with RF or something, those PCBs are quite a bit crazier.

The models for the cells are implemented in software. You know what's easy to update in place? software. You know what's hard to update in place? Mechanical systems. That's my point.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Lmao go for it, I deal with systems shoving kiloamps at multi-tens of kv around quickly, I'll chalk it up to a small fry "power" electronics engineer not knowing better, as is customary for you so far.

GaN MOSFETs, because igbts are too slow, tech you,
@dragontamer, haven't even gotten to touch yet. TeChNiCaL MaGiC in your parlance.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

In the long run, yes.

How do you account for tribological degradation in tolerances over time? There are techniques to negate the problem entirely, my 40+ year old Japanese motorcycle uses high-ish pressure hydrodynamic bearings to allow oil to be the "wear" surface... But it isn't foolproof.

Newer techniques rely on better metallurgy, oil additives which precipitate on designated surfaces, etc etc etc. It's one of those things you and I have both observed where the more you look at it, the more complex it gets.

Now change gears (haha) and observe the complexity of analog/digital systems. You and I front-load the complexity, so that any configuration changes should (mostly) be possible in software. "Oh no, we didn't use this particular junction of p-n MOSFETs"... They added $3 to the BOM, but our flexibility/redundancy is increased.

Look, you should know as well as any EE that solid state systems, when run within parameters, have a tremendous unchanging mtbf. While there are currently issues with undersizing MOSFETs and igbts, I expect our engineering models (in our heads) of what to expect from these evolving electronic components to adapt to these new operating environs, the already reasonable reliability will only increase.

Failure of these packs and their bms' are low enough that we can point to specific failures, versus how often we see someone with serious ICE engine issues in the local mechanic's shop.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

My understanding is that this is related to whether it's American grown in fields previously used for cotton and other non-food crops due to pesticides.. foreign rice should be ok?

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Not a good thing either haha.. as an American, I don't think our farmers are purposely poisoning the rice, but may not understand the pesticides in the soil from decades ago can still fuck people up now.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Represent! (It's vscode with all telemetry and crap removed, all your vscode extensions still work fine)

RubberElectrons ,
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Well... At least all the ones related to platform IO and other embedded development. Can't say every extension, since I've not tried them all.

RubberElectrons ,
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It's truly the weak link in all this. Still going for EV, but it's gotta improve.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar
Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right.

George Orwell, 1984

Honestly frightening that you trumpet this as a good thing. All our governments fucking suck in their own ways, and much as I love living in the US, I'm not ashamed to acknowledge serious mistakes made in the past and present. Denial gets us nowhere.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

The fuck? I live in an extremely car dependant area, a combination of my bicycle, mass transit, and sometimes my motorcycle works fine. I get everywhere, on time.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

This guy is a known misinfo spreader.

Yep, they weigh more. Yep, they'll lose about 100 miles off their range after 100k miles.

So what? Diy replacements are doable, it's a 6-800v device (nominally), but you'd hire a professional to do an engine swap.. or do proper research to understand what you're dealing with.

What do you get after replacing a battery? A fully functional car. Still has its dings and dents, but still accelerates incredibly, has almost no maintenance items based on the simplicity of an electric motor, reliability of a solid state control system.. how's your ice doing after several hundred thousand miles? No co2 output at the pipe, right? No constant oil changes, right? No packing two complex automotive systems (electric and combustion) into one vehicle frame... Right?

Sheesh.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

I'd agree, but the mass transit is.. Half implemented, at best out here. How many miles/km are you talking about, is a better question.

RubberElectrons , (edited )
@RubberElectrons@lemmy.world avatar

Lmao I work on systems intimately related to this stuff, it must be fun being this consistently wrong, because you're hell bent on sticking with it.

What a low-quality mechanic: moving a pack requires a pallet jack, or in a pinch, several furniture dollies from harbor freight, at $30/ea. Lifting into place, several scissor jacks. I mean really, aren't you embarrassed by your lack of creativity? You poor man.

JuSt LoOk iT uP, how embarrassing. Durability of the packs is generally guaranteed for 10yrs of full cycle usage. What's a cycle count as? Full charge to full discharge. How many people do that? It's easy to do on a very small cellular phone battery, you're less likely to feel comfortable doing that on a large vehicle.

The point is, you wear out your pack, the rest of the vehicle keeps running for another decade after pack replacement. The worn out pack is recycled, and new fully capable packs are made using the recycled filtered lithium. Less energy is required overall, by reprocessing a pack, not an entire vehicle.

I don't care Cole. I'll always fight your lack of knowledge and understanding wherever I see you, forever. I enjoy it, and will wear you down with the technical truth, not what the media or your dim friends parrot to you.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

🤦 got it, moron. None of your points relate to why companies are scaling back, it's been repeated in many different articles at this point: "targeting the small population of wealthy with SUVs and luxury cars is a strategy guaranteed to quickly reach saturation".

Sheesh, try reading a little.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Lmao dude you are really good at being dumb. Hey, fuck you for dragging the gene pool down.

I'm against trickle down/bull and sparrow economics. I'm saying EVs should be aimed at the working class, not the wealthy class as has been the case.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Read the part in quotes more carefully. It's saying that targeting the wealthy with EVs is a bad long term strategy.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

PiKVM?

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

PiKVM for open source networked KVMs: https://pikvm.org/

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Maybe some enjoy the open-stack in terms of network security... I'd personally use this in front of a port multiplier, so you can have 8x machines going to a switch, the front of the switch toggled by one of the Pi's GPIO pins.

Part of it is that the prices for the Pi's themselves have dramatically increased lately.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Same. I love freaky women, who doesn't enjoy experimenting??

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Sheesh, what a boring mentality. Yawn.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Have you had sex with women who experiment with their bodies?? I mean really, the muscle control is incredible.

As a crude analog, why do humans dig being with yoga instructors of either sex?

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Excellent news. Small steps to hopefully thread the needle with. Don't be discouraging, people, we need success and vigor.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Sorry, that's false. Is it potentially being co-opted as a distraction by those industries? Yes, in fact probably because of how scummy fossil fuel industries are.

That doesn't mean anyone is under the illusion that this is a replacement for renewables now. Grow up.

This is still, long term, research ave development which needs to be done.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

It's gonna be both. Only a simpleton would be worried others think that way.

RubberElectrons , (edited )
@RubberElectrons@lemmy.world avatar

Why not state it the way you did? Succinctly, I'd have said "we need the current renewables effort to continue, along with this great longer-term research". Bam, done.

Not "we need renewables now, not fusion in 30yrs" with the accompanying clown sounds.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

There are several other topologies with promise. But even a tokamak can use its first wall latent heat to turn the archaic steam turbine.

While I also have low expectations for plasma density in tokamaks, they're able to keep plasma at fusion temperatures for minutes at a time.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Yes. That's already being worked on, in forms other than just the tokamak as well.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

First point is not relevant, fusion has been chronically underfunded for far too long. The money being spent on fusion r&d is far less than the money going to renewables deployment, and you advocate cannabilizing even that???

I won't go down the list of how many technical contributions are coming out of fusion, just know that there are a lot, that help make both renewables and non-renewable more efficient. How do you switch tremendous amounts of current at extreme voltages, very quickly? The answer directly impacts overall efficiency of everything from EVs to micro & macro-grids. Usually it's a pick-two-of-the-three, but switch systems are being used to solve these exact issues, successfully.

As for why I'm hostile? Read the previous two paragraphs again, maybe something will jump out at you.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Works fine for me. I gotta stop after round 6 though.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Naps, or just passion for what I'm looking at. Women in tight rubber clothing makes me crazy.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Man, it's gotta suck being this afraid of everyone.

RubberElectrons , (edited )
@RubberElectrons@lemmy.world avatar

You're entitled to your incorrect opinion. I like mass transit for reasons like removing my need to pay attention for every second of a trip, for much reduced cost per mile, and for meeting/looking at interesting people.

Most people seem to agree. You can't move a coffee table on it (though I have, my apologies from a now-wisened teenager), but that's what stuff like car share services can step in on.

Who's denying you service, and why? The driver is way at the front of the train, what are you on about?

RubberElectrons , (edited )
@RubberElectrons@lemmy.world avatar

Alright grumpy, calm down. I'll repeat the question: what happened? That's as much energy as I'm willing to give the weak crying.

Literally 1.7 billion rides on the NYC subway system in 2019, it seems to work great for us. I dress in weird shiny rubber clothes sometimes while going to a party or whatever, I get looks of curiosity or derision from other passengers sometimes, and I don't give a shit. Are you just that sensitive?

RubberElectrons , (edited )
@RubberElectrons@lemmy.world avatar

Bro I'm upvoting this because of how hilariously sad this is 😂

Anyway, no biggie. Can't answer what happened, a simple question.

Don't come to big cities, we're gonna charge you to drive your lifted dangling nutz grocery getter below 59th st, and laugh our asses off at your limp open carry chicken pistol. Real men and women live here, with and for each other.

Stay in Idaho or whatever, enjoy your "I'm scaewed" life 😂

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Still, from an acorn grows a massive tree.

Proposed Wage Theft Legislation Would Strip Violators of Their Ability to Do Business in New York (www.propublica.org)

“Each year, more than $1 billion is stolen from the pockets of hardworking New Yorkers by unscrupulous employers, often targeting the workers with the fewest resources to fight back,” Rosenthal said. “If businesses refuse to do the right thing and pay their workers what they are owed, New York State should hold them to...

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Realization might only last for about a millisecond or two.

At some point, doctors are gonna tell a guy, "your face is already irreparably damaged by these AR devices in your sniff.. just as an experiment, why not improve the enhancements surgically?" And that's how cyberpunk 2077 gets on the rails.

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

Eeesh I didn't mean to inspire anyone haha

RubberElectrons ,
@RubberElectrons@lemmy.world avatar

I was driving in the rain yesterday.. Not a big deal 🤷

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