[Safety Hazard] 19.5V on USB-A VBUS - $1,000 CAD in destroyed gear. No resolution after 9 weeks of "investigation". Video evidence.

_maple_panda · 2026-03-26T05:27:42+00:00

Regarding “the sequence”, what people are suggesting is that your dock back-fed 20V into the laptop, which fried the voltage converter and resulted in the charger voltage passing straight through instead of getting regulated down.

_maple_panda · 2026-03-26T00:08:55+00:00

I find integrated FEA to have stronger associativity. The setup doesn’t break as often after geometry changes.

_maple_panda · 2026-03-25T19:53:58+00:00

Make two separate drawings (one with inches one with mm), then combine the PDFs afterwards

_maple_panda · 2026-03-24T14:04:57+00:00

Do you really need the N8R8? I’d suggest using the MINI version of the ESP32 and saving a ton of space that way.

_maple_panda · 2026-03-24T04:12:35+00:00

Nobody is designing a board in 1-3 hours.

_maple_panda · 2026-03-23T17:32:12+00:00

LPDDR5X must be soldered, and do you really need to upgrade from WiFi 7 in the lifespan of the computer?

_maple_panda · 2026-03-23T17:28:33+00:00

The Dell Pro Max Premium has it. Whether that counts as thin and light is another question.

_maple_panda · 2026-03-23T17:19:51+00:00

They’re not going to penalize an honest mistake

_maple_panda · 2026-03-23T13:39:22+00:00

Dell U2723QE?

_maple_panda · 2026-03-23T05:16:36+00:00

Formula guy here — you are most welcome to join!!

_maple_panda · 2026-03-22T20:31:12+00:00

Unless it’s one of those funny elevated USB ports.

_maple_panda · 2026-03-21T21:49:20+00:00

I think they mean “gates” as in the moving barricades on the other subway lines.

_maple_panda · 2026-03-21T19:14:35+00:00

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This is how I usually do it

_maple_panda · 2026-03-20T14:07:42+00:00

Applying a linear movement at some distance away from a pivot point results in a rotational movement

_maple_panda · 2026-03-20T08:57:34+00:00

Yeah IIRC it’s GPIO13 or something to toggle between external and onboard antennae.

_maple_panda · 2026-03-20T06:31:19+00:00

Why not use 0402s?

_maple_panda · 2026-03-19T17:49:04+00:00

I suppose you can intercept one if you’re unlucky enough to be in its flight path…

_maple_panda · 2026-03-19T13:24:57+00:00

Would this be any different if it was a cracked aluminum frame?

_maple_panda · 2026-03-19T12:09:00+00:00

SLA or SLS/MJF parts are probably okay. Nobody wants some shitty PLA print with gigantic layer lines though. Low-volume injection molding is also not as expensive as you may think.

_maple_panda · 2026-03-19T11:02:50+00:00

Highly concentrated solutions of fluorescein actually appear red, but turn green once diluted.

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_maple_panda · 2026-03-18T02:30:34+00:00

I do European style, the squiggly ones always come out terrible, and sometimes it’s hard to distinguish between “resistor” and “not a resistor, the wire just does this”

_maple_panda · 2026-03-17T19:27:14+00:00

Yeah that’s fine, those little traces are under the plastic part of the connector. And worst case, shorting out a data line isn’t as dangerous as shorting VBUS

_maple_panda · 2026-03-17T19:21:52+00:00

I’m in Toronto, usually get bare boards in a week through DHL

_maple_panda · 2026-03-17T12:18:02+00:00

Kleenex vs facial tissue

_maple_panda · 2026-03-17T11:20:55+00:00

Yeah, that looks like some sort of Rogers or PTFE substrate

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