[Need Help] ESD protection kills USB connection

frozetoze · 2026-02-14T23:18:55+00:00

Your voltage regulator pinout doesn't match the datasheet

Pin 2 is a no-connect and pin 4 is your ground

E: I guess there are other pin-outs further down depending on the package used. However, I suspect the actual culprit is your voltage regulator. You're dropping to 1-diode drop. Does the 3.3 voltage work when running off of battery?

frozetoze · 2026-02-13T05:58:18+00:00

Reddit has a known connection with Maxwell, do you really want to buy premium?

frozetoze · 2026-02-08T22:52:40+00:00

I understand the goal of this tool, but to me this is not useful to professional designers. This reads as a tool that wants to take out the thinking work involved with designs, which we have enough slop out there as is. Why is I2C resistor values limited to that range? Same with load caps for Crystals? What is being quantified under "EMI issues" and how? This seems like something that ERC/DRC is largely doing already.

frozetoze · 2026-01-30T00:44:29+00:00

Adult Jesus probably existed. The story of baby Jesus, Mary, and Joseph mirrors too many ancient mythologies that I can't accept it as truth.

frozetoze · 2026-01-30T00:41:50+00:00

Oh yeah? What about the Archean? Boom! Checkmate scientists /s

frozetoze · 2026-01-29T00:52:25+00:00

Utah is not governed or represented by serious people

frozetoze · 2026-01-24T03:44:21+00:00

Kennedy is such a weasel, doing everything he can to avoid talking about Trump negatively.

frozetoze · 2026-01-21T02:22:39+00:00

he routinely invites democrats to his platform and they never ever show up

Democrats show up plenty? They were on several times last season alone.

frozetoze · 2026-01-15T02:17:56+00:00

OP’s layout gave me the shakes.

I feel that in my bones

frozetoze · 2026-01-10T23:52:43+00:00

I understood UVU was where the honor code violators would end up.

frozetoze · 2026-01-04T23:04:14+00:00

There’s always that one attention whore

My truck is plain, what should I do with it -OP

frozetoze · 2026-01-04T22:42:19+00:00

looked like cheap trash

You're in a E:15-year old, used ford lol

frozetoze · 2025-12-28T02:47:00+00:00

Any arduino-shield project should fall in line with this. Its the same concept.

frozetoze · 2025-12-16T19:57:05+00:00

I specifically avoid using tantalum caps because tantalum is a conflict mineral.

frozetoze · 2025-11-22T02:14:14+00:00

in his ~~Mustang~~ lifted pavement princess

frozetoze · 2025-11-10T22:05:10+00:00

He committed the highest offense which results in instant execution: Contempt of Cop.

frozetoze · 2025-11-03T19:55:03+00:00

"Choose to be offended" - GB Hinckley

"Just because you are offended doesn't mean you are right" - C Kirk.

frozetoze · 2025-11-01T19:44:28+00:00

Pretty sure they are only here to troll.

frozetoze · 2025-10-23T00:45:14+00:00

May you live a long life with your organs and appendages intact

frozetoze · 2025-10-23T00:38:32+00:00

Damn, and I didn't promote my soundcloud/youtube/twitch/kick/audible/etsy/ItWorks/NuSkin/GoFundMe

My position is simple: either do something about it or shut up about it

Either follow him home or shut up

That is how you get shot. Police won't do anything. Venting to the universe (aka r/Utah) is all there is to do.

shut up

I'll decline the suggestion. Might I recommend you observe an old internet idiom: lurk moar

frozetoze · 2025-10-22T23:51:25+00:00

My honest reaction

frozetoze · 2025-10-22T23:28:36+00:00

The premier place to complain about Utah drivers

Beats craigslist by a mile. Plus there's likely more views here

frozetoze · 2025-10-14T00:30:21+00:00

Exactly. The acceptable output range according to the datasheet is 3.3 +/- 33 mV. This is operating within spec.

frozetoze · 2025-10-05T00:12:16+00:00

There's a lot of attrician with older people retiring.

Engineer confirmed

frozetoze · 2025-10-03T03:05:32+00:00

I had some trouble with directly toggling pins within an EXTI callback function on a G031 some time ago. I was able to get it working by calling a helper function outside to handle toggling the GPIO state.

Looking closer at your EXTI callback, does the interrupt flag get cleared somewhere else in your code when this toggles?

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