You know what’s gonna surprise a lot of people, and surprised me?
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You know what’s gonna surprise a lot of people, and surprised me?
The biggest source of BOM cost isn’t sensors (excluding the SPS30 and kinda the SCD40)
The biggest source of BOM isn’t the compute module with the ESP32
No, the biggest source of BOM is… the power module.
Turns out, unless you’re handling tiny amounts of it, power ain’t cheap on a PCB.
eFuse, USB-PD, thick copper, etc.
I understand why GOOD USB-C power bricks are so expensive now.
It isn’t because manufacturers wanna gouge you (mostly). It’s because it just… costs a lot to get components rated for a lot of power, costs a lot to get PCBs rated for that power (thick copper, 4-6 layers, etc.). It costs a lot to make them small enough where they don’t eat your outlet like an old school wall wart.
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You know what’s gonna surprise a lot of people, and surprised me?
The biggest source of BOM cost isn’t sensors (excluding the SPS30 and kinda the SCD40)
The biggest source of BOM isn’t the compute module with the ESP32
No, the biggest source of BOM is… the power module.
Turns out, unless you’re handling tiny amounts of it, power ain’t cheap on a PCB.
eFuse, USB-PD, thick copper, etc.
I understand why GOOD USB-C power bricks are so expensive now.
It isn’t because manufacturers wanna gouge you (mostly). It’s because it just… costs a lot to get components rated for a lot of power, costs a lot to get PCBs rated for that power (thick copper, 4-6 layers, etc.). It costs a lot to make them small enough where they don’t eat your outlet like an old school wall wart.
I’ll never trust cheap power bricks again after seeing what goes into them.
Amazon doesn’t have your safety or interests in mind.
They’re counting on the fact when your house burns down, you won’t remember it was something they sold.
They’re counting on “this thing will break or go flaky before it gets to the point it burns down your house.” They’re counting on “it will PROBABLY fail open.”
They’re counting on “they’ll get a light zap and probably won’t die if the grounding clearance turns out to be aspirational.”
They’re counting on “well, a surge is VERY unlikely and they SHOULD use a surge protector.” (SURGE PROTECTORS ARE NOT ISOLATION BTW)
They’re probably right.
But “probably” doesn’t mean “always.” Just means you’re playing Russian Roulette with 9999 empty chambers and one loaded one.
And the times it does burn someone’s house down or torch their living room, it’s easy to blame the user.
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I’ll never trust cheap power bricks again after seeing what goes into them.
Amazon doesn’t have your safety or interests in mind.
They’re counting on the fact when your house burns down, you won’t remember it was something they sold.
They’re counting on “this thing will break or go flaky before it gets to the point it burns down your house.” They’re counting on “it will PROBABLY fail open.”
They’re counting on “they’ll get a light zap and probably won’t die if the grounding clearance turns out to be aspirational.”
They’re counting on “well, a surge is VERY unlikely and they SHOULD use a surge protector.” (SURGE PROTECTORS ARE NOT ISOLATION BTW)
They’re probably right.
But “probably” doesn’t mean “always.” Just means you’re playing Russian Roulette with 9999 empty chambers and one loaded one.
And the times it does burn someone’s house down or torch their living room, it’s easy to blame the user.
@Elizafox
AMAZON and other marketplaces are also counting on the FTC bureau of consumer protection to not maintain a database that any rudimentary AI program could use to link a list of fires with a list of products. Or make transparent any consumer complaints or fire stories submitted by fire investigators that could be linked with products or vendors. -
undefined oblomov@sociale.network shared this topic on
Gli ultimi otto messaggi ricevuti dalla Federazione
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Welcome to the new internet and goodbye to any privacy whatsoever.
https://thelocalstack.eu/posts/linkedin-identity-verification-privacy/
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You are here.
We've breached 430 ppm CO2.
#climatechange
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...spends tonnes of electricity and water to do something that you could probably do in five minutes?
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@Em0nM4stodon this technology makes you stupider.
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Sempre incanta, non smette mai.
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I dunno. The AI has made me much much more productive as my work involves me learning lots of new technical concepts and software all the time. It reduces a lot of barriers to understanding. I find it hugely helpful, but I do despise AI written content.
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@timbray -- another one, they claim to be billionaire-proof but don't offer anything to back that up. i don't think they are. they fully control their users. no different from any other silo. twitter had an api too.
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tim, i never was able to find the valuation confirmed. i think there was a techcrunch story.
for all we know elon musk owns it.
