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fins posted:POTS has 48V, no one really uses that anymore. instant country wide charging network! POTS is -48VDC. It's negative because 100+ years ago, wire insulation was poo poo and bonding + to earth meant you didn't slowly dissolve all your wire when it got wet. Same reason there are positive grounded cars.
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Mar 3, 2023 05:10
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I picked up an old 70s CB and it took me a good fuckin minute to figure out why it constantly blew fuses when i turned it on wired for positive ground. what the gently caress
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Mar 3, 2023 05:35
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FAUXTON posted:rum, comedy, and the fash
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Mar 3, 2023 06:43
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oh my god this loving boer is brining back the dop sisteem https://en.m.wikipedia.org/wiki/Tot_System
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Mar 3, 2023 11:10
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Jonny 290 posted:the big sticking point is that you won't be able to directly accessorize a 48v system with 12v things, but it's 2023, and i can go on the internet and get a DC-DC buck converter that will eat 48v at 5 amps and output 12v at 20 amps for my ham radio, and it's the size of a pack of smokes, costs $20 and has 95% efficiency. tbh it's not that hard to run everything off 48V. it's not like chips run direct from 12V anyways, most boxes in your car already have an internal buck converter or three to drop the 12 down to whatever's useful. those buck converters can easily be redesigned a bit to extend the input range to include 48V, only problem is who's paying to do the work on what schedule, and that comes down to whether 48V is compelling enough to make lots of the auto industry willing to pay for it to happen fast (it's not) military already runs lots of vehicles on higher-than-12V, but it's 28V rather than 48V. look up mil-std-1275. it's been around approximately forever, because it turns out you don't wanna have to use a 12V starter motor to crank the bigass diesel engine in a tank. 48V would be even better, but did i mention that 1275 is loving old (as a side note the fun part in automotive buck converter design is protecting the output side against the spikes, brownouts, etc on the input. automotive power is dirty nasty poo poo. that $20 buck converter box you mention probably would not deal well with that, or the environmental factors like temperature and vibration. everything has to be overbuilt to survive)
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Mar 3, 2023 13:16
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I love the animation of the hubcaps spinning on. Which reminds me that they can't because they have to align with and sink into the rubber indents on the custom tyres, which means the tyre alignment itself has to match perfectly with the wheel bolts radially.
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Mar 3, 2023 13:51
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i still can't believe they called it the loving Cybertruck. just absolute brain-of-a-seven-year-old energy. it does have a bunch of PID controllers in there so it's not wrong exactly.
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Mar 3, 2023 13:56
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*points to cabin thermostat* cyber.
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Mar 3, 2023 13:56
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Investors: *sobbing* elon you can't just point to random objects and say "cyber", please elon musk: *points at penis* Sapozhnik posted:cyber.
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Mar 3, 2023 13:59
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Sapozhnik posted:brain-of-a-seven-year-old coming 2024: the Tesla No Megans In My Bedroom, and the Cyber Nintendo Uncle
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Mar 3, 2023 14:04
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BobHoward posted:(as a side note the fun part in automotive buck converter design is protecting the output side against the spikes, brownouts, etc on the input. automotive power is dirty nasty poo poo. that $20 buck converter box you mention probably would not deal well with that, or the environmental factors like temperature and vibration. everything has to be overbuilt to survive) There's a reason the automotive variant of the PicoPSU is rated for something like 6-36 volts, and it's not just compatibility with 24v vehicles.
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Mar 3, 2023 15:32
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the nice thing about switching to 48 is that you could just have a buck converter with a wide input range. as is, if you want to put one in between your 12v rail and a 12v piece of gear, you need one o them fancy buck/boost converters cause sometimes its gotta convert up, and sometimes down
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Mar 3, 2023 15:37
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the cybertruck is going to be a huge flop, the kind of thing everyone wants to gawk at but nobody wants to buy. it's going to have major problems when it's taken out of the showroom environment, because it ignores lessons that automakers learned painfully years ago. I hope elon is getting an ulcer from knowing how poo poo it is.
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Mar 3, 2023 19:12
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if they actually released the cybertruck, it would have to compete with the lightning in the midmarket and the rivian at the top end, both of which will have had years to work out the kinks. no one except tesla stans or confused rich guys will pick one up. that demo will never punish tesla for not releasing the cybertruck, so there's no motivation for doing anything but riding a perpetual "coming soon" hypetrain
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Mar 3, 2023 19:30
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exe cummings posted:if they actually released the cybertruck, it would have to compete with the lightning in the midmarket and the rivian at the top end, both of which will have had years to work out the kinks. no one except tesla stans or confused rich guys will pick one up. that demo will never punish tesla for not releasing the cybertruck, so there's no motivation for doing anything but riding a perpetual "coming soon" hypetrain please, it's not a hypetrain it's a hypeloop
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Mar 3, 2023 19:35
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Shame Boy posted:please, it's not a hypetrain it's a hypeloop 
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Mar 3, 2023 19:53
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more like hyper poop
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Mar 3, 2023 19:59
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Fart Sandwiches posted:more like hyper poop
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Mar 3, 2023 20:02
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Fart Sandwiches posted:more like hyper poop
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Mar 3, 2023 20:46
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Fart Sandwiches posted:more like hyper poop lol
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Mar 3, 2023 20:50
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Fart Sandwiches posted:more like hyper poop
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Mar 3, 2023 20:54
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Magic Underwear posted:I hope elon is getting an ulcer from knowing how poo poo it is. i think he might actually believe that it is cool and good
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Mar 3, 2023 21:19
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yeah i dont think you really get Elon Musk if you think he's having a bad time at all. he's loving all the imc and dilbert handjobs
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Mar 3, 2023 23:49
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Jonny 290 posted:yeah i dont think you really get Elon Musk if you think he's having a bad time at all. he's loving all the imc and dilbert handjobs he loves engagement so much he got divorced 3 times
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Mar 4, 2023 00:25
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Jonny 290 posted:yeah i dont think you really get Elon Musk if you think he's having a bad time at all. he's loving all the imc and dilbert handjobs nah, it definitely drives him nuts that he's not universally beloved
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Mar 4, 2023 00:32
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Cat Face Joe posted:nah, it definitely drives him nuts that he's not universally beloved it's both imo he loves the greasy handies but also hates that he can't get them from everyone anymore
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Mar 4, 2023 00:44
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https://twitter.com/mikepqr/status/1631739144094507008 all is well! remain calm!
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Mar 4, 2023 00:52
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FMguru posted:https://twitter.com/mikepqr/status/1631739144094507008 https://twitter.com/elonmusk/status/1051381698682793985
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Mar 4, 2023 00:55
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rich people are the worst
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Mar 4, 2023 01:05
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FMguru posted:https://twitter.com/mikepqr/status/1631739144094507008 I hope he said it's resolv but IT pager people are goddamn weird about their jobs
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Mar 4, 2023 01:07
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FAUXTON posted:I hope he said it's resolv but IT pager people are goddamn weird about their jobs given he quit in october, i'm guessing they need a new responder and don't have one gently caress the rest of the details, that's already funny
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Mar 4, 2023 01:11
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they should just page 1,000 random phone numbers for every alert and i bet one of them will ack. hire that person and thats your new incident response coordinator
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Mar 4, 2023 01:12
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i have no idea what that means beyond the obvious (environment, alert level, service type, service action) but someone in the replies said something about that indicates it wasn't acknowledged for 3-4 levels and therefore escalated which, if true: lmao
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Mar 4, 2023 01:12
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if i ever do a startup thats going to be my hiring strat. "OK thanks for your application, you will be randomly paged some time in the next seven days. ack the page and click the zoom link and start working. if your response time and actions are good, you're hired
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Mar 4, 2023 01:13
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that's some serious grindset poo poo
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Mar 4, 2023 01:22
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FMguru posted:https://twitter.com/mikepqr/status/1631739144094507008 i would have definitely acknowledged it left it open and then simply went about my business lol
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Mar 4, 2023 01:27
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Jonny 290 posted:if i ever do a startup thats going to be my hiring strat. "OK thanks for your application, you will be randomly paged some time in the next seven days. ack the page and click the zoom link and start working. if your response time and actions are good, you're hired
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Mar 4, 2023 01:27
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anyhow came in here to post this https://twitter.com/Tweetermeyer/status/1631374877587562496
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Mar 4, 2023 01:29
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post hole digger posted:i would have definitely acknowledged it left it open and then simply went about my business lol
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Mar 4, 2023 01:30
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post hole digger posted:i would have definitely acknowledged it left it open and then simply went about my business lol whom amongst us
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Mar 4, 2023 01:37
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