Hacker Newsnew | past | comments | ask | show | jobs | submit | buildbot's commentslogin

If you are sensitive you can get really, really annoying blips of flicker even above 1khz - https://journals.sagepub.com/doi/10.1177/1477153512436367

They also flicker really badly if your power is not perfect, like you have a decent sized training rig on a different circut.

Incandescents are basically little light inductors and I would imagine the luminosity curve would be sinusoidal vs whatever hell a LED driver chip puts out.


I suppose that counts/was caused by a fracture but almost a half meter of gap in the track is nuts. Like describing a limb that’s totally removed as a bone fracture.

Though conceivably the break was very small and a train impacting the slightly lifted rail just caused a good chunk of it to explode.


The "fracture" being referred to is a weld that somehow failed. The gap you are seeing is because an enormous, heavy train travelling at 200km/h hit that fracture and the rear half of the train derailed, tearing up sleepers and kicking all manner of debris around including ballast and, in this case, parts of newly-fractured (and therefore weakened) track.

> Though conceivably the break was very small and a train impacting the slightly lifted rail just caused a good chunk of it to explode.

The crown (top) of the rail seems to be missing after the gap. The crown-less section then continues ~3 meters before it disappears behind the investigator on the left. IDK what that might indicate.

ref pic: https://ichef.bbci.co.uk/news/1024/cpsprodpb/ecb4/live/53924...


The rail is laying on its side in that picture, so what is visible is the foot not the web.

edit: other angles of the same location here: https://youtu.be/DIQ4SrGSua0?t=1174


> The rail is laying on its side in that picture

Ah, I see it now. The marks from contact with the ties should have clued me in earlier.


Yes, the “fracture” (the problem was actually at a joint) was there for a while. The missing segment of rail was still there when the train arrived - the derailment affected only the last cars.

Doesn’t anything under 250g basically slip under the radar (not literally radar). Seems like most drones they care about might end up not being trackable anyway.

Plus there’s actually less waste, I would imagine, by using a generic, very efficiently mass produced, but way overkill part. vs. a one off or very specific, rare but perfectly matched part.

Anyone using this in Washington is breaking the law, IMO - https://dol.wa.gov/vehicles-and-boats/vehicles/vehicle-regis...

I don’t see anything there that would suggest a comma unit breaks the law.

First off comma isn’t even autonomous, it’s a L2 driver assistance system.


FYI for others, if you are in Washington, you are breaking the law: https://dol.wa.gov/vehicles-and-boats/vehicles/vehicle-regis...

Yep, getting this too.

FYI if I get hit by someone and I find out they are using comma, everyone’s is getting a lawsuit.

Is there a hard safety check for an insane steering angle? Full brake or throttle? ECC error? What happens!? That’s what a safety standard checks and certifies for.

Incredibly dangerous, irresponsible, and illegal to be using this around other people. At least Tesla vaguely pretends to work with regulators. The cute download your own firmware so they aren’t shipping an illegal device? Encouraging hands off, inattentive driving? Let’s see how civil court sees that.


You aren't going to like answer but yes, there are firmware safety checks + CAN checksums. And driver facing camera tracking your attention so you aren't asleep behind the wheel. Something that your Tesla apparently failed to consider https://driving.ca/auto-news/crashes/sleeping-tesla-driver-r...

Your attitude reminds me of how Microsoft fans talked down Linux and GNU; blah blah open source can never be as good/secure/stable as our billion-dollar commercial product because money/certificate


Okay, is every change validated by a safety agency? No. I asked a lawyer this question and the answer was “on every level yes you could sue them”.

Edit - Further back and forth and depending on the circumstances, comma could be criminally liable.

I don’t have a tesla or a car.


You have an auto industry lawyer on retainer to ask hypotheticals on Sunday evening?

First answer your own question (and ask lawyer while you at it), is every changed pushed by Tesla reviewed by EU/CA/US regulators? And then explain to me how your Tesla still allowed driver to fall asleep. FYI that was not a singular accident.


Yes I texted a lawyer.

Again, I do not have a Tesla. I have never had a Tesla. I do not plan to own one.

Here’s a 240M dollar judgment against tesla- https://subscriber.politicopro.com/article/eenews/2025/08/04...

You think that’ll go better if you hit and maim me with your comma controlled car?


Your argument went from "cute GitHub project has no safety" to "I get money if tesla maims me".

I must ask you again, if Tesla, an example of your choosing, works with regulators and has every change certified and reviewed then how did they fail basic safety check?


Seattle public library is also an archive as well as a provider of many beautiful and free third spaces. The downtown library is very cool. I bet there’s stuff in the stacks there that is not digitized anywhere.

See! To people complaining about this being on the front page - https://xkcd.com/1053/

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: