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Posted by driesdep 4 hours ago

Running Tesla Model 3's computer on my desk using parts from crashed cars(bugs.xdavidhu.me)
240 points | 69 commentspage 2
rconti 2 hours ago|
I _do_ find it weird that the LCDs from crashed cars are so expensive. I wonder if newer models have better screens, so people with older cars upgrade? Or if they're a common failure point?

I have a Model 3, but I can't say I follow the forums.. but I've never heard of screens failing -- I'm sure it happens but I think if it was common problem I'd have heard of it.

kube-system 2 hours ago||
I'd guess they fail not on their own, but because they are human interface devices and take the brunt of abuse... e.g. iPhone screens are a popular repair despite being reliable components.
denysvitali 2 hours ago|||
Some newer models have better (bigger) screens, and some are incompatible since they've slightly changed the connector. Old models (pre highland/ jupiter facelift) have used the same display shown in the article for a very long time across M3 and MY. What usually happens is that they physically break because people are not that careful, so the touch screen ends up breaking - although you really have to put a lot of force to break that display.
cbeach 2 hours ago||
My 2016 Model S LCD panel developed the well-known fault of delamination and leaking some kind of sticky fluid.

Turns out the early Model S vehicles used consumer grade LCD panels that weren’t designed for the prolonged high heat you get in a metal and glass box left outside in the sun all day.

Tesla since upgraded their vehicle screens to proper automotive-grade LCDs which are excellent.

My point is, automotive-grade hardware is higher spec than regular consumer computer hardware, hence the high prices.

As an aside, I upgraded my whole computer and screen from MCU1 to MCU2 and it was worth the upgrade.

Credit to Tesla for building a retrofit computer upgrade for old vehicles. Thats a non-trivial thing to engineer and I appreciate their effort. Other car manufacturers would prefer you were compelled to buy their latest vehicle instead.

mixdup 2 hours ago||
"tuner" almost certainly refers to a radio (think AM/FM/SiriusXM) tuner module
0xbadcafebee 2 hours ago||
> Unfortunately I had no other choice but to buy this entire loom for 80 USD.

Fwiw, mine costs $450 from Ford. Also in the US we call this a wiring harness, with the loom being the material that goes over the wires

denysvitali 1 hour ago|
That particular statement is also wrong. For this particular setup you can also buy the correct cable (making sure to not get the one that inverts some pins!!!) for cheaper. Mine was around 15$.

Violet HSD Code D 4+2 Pin Female to D Female Jack Connector 6 Pin HSD LVDS High Speed DataTransmission Harness Wire LVDS Cable https://a.aliexpress.com/_EuGOh9e

caycep 3 hours ago||
Granted, I think it would be valuable to look at all sorts of automotive ECUs. I always wonder how the tuning industry does their thing; I shudder to think they're just sitting there flipping hex codes directly in running software...
kotaKat 3 hours ago||
I'm amused reading the terms and requirements the author mentions in the bug bounty program for researchers gaining root access (under 'Vehicle Targets') - https://bugcrowd.com/engagements/tesla

"To promote further security research, Tesla offers security researchers the opportunity to retain root access on their infotainment system even after their reported vulnerability has been patched. In order to qualify, a researcher must send in a valid report describing a novel way to gain root access on a Tesla infotainment system. Upon confirmation, Tesla will instruct the researcher on how to use their existing root access to enable the researcher SSH feature, along with an SSH certificate for the researcher's public key (tailored to their specific hardware ID). The certificate restricts SSH access to the local diagnostic ethernet link. Tesla may renew the certificate as long as the researcher continues reporting vulnerabilities."

Very neat.

anigbrowl 3 hours ago||
I have no wheels and I must drift
dogman1050 3 hours ago||
I love that it has a standard RJ45 ethernet connector.
bombcar 3 hours ago||
I thought I saw an HDMI connector, but maybe I was wrong.
inventor7777 3 hours ago|||
Ha! Reading this comment made me curious, so I went back and looked at the article and there does seem to be a full sized HDMI connector. I wonder if it is enabled, or just for Tesla internal testing?
flutas 2 hours ago||
It's only a debug port and not actually HDMI signaling, unfortunately.
2postsperday 3 hours ago|||
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wds 3 hours ago||
How many PoE adapters would it take to charge a Tesla?
MBCook 2 hours ago||
Mostly depends on how fast you want to charge.
a-dub 2 hours ago||
i wish the ui on those things was more visually appealing. between the cheap looking gloss finish on the display itself and the unextraordinary ui, it's just kinda blah. one can have a debate about to screen or not to screen or whether to use vfd displays or whatever and i get the importance of cost control but it should look good and it really doesn't. the graphic of the car looks like a cartoon.
sneakymichael 2 hours ago||
Interesting take–– I feel the total opposite; I love the UI.
a-dub 1 hour ago||
i think a lot of people do. i don't know what it is, there's maybe just something about the car graphic that doesn't sit right with me. the front/side view when parked just seems cheesy for some reason. maybe because it's meant to show unclosed doors or something and when everything is set the car's status is car which is redundant.
Rohansi 8 minutes ago||
It does show open doors etc. but if not that then what would you show on the screen? You can already shrink it so the rightmost 3/4 of the screen is the map, leaving just 1/4 of the screen for the car visualization and indicators.
kcb 2 hours ago||
It's glass...
owenthejumper 4 hours ago||
Could 'lb' be load balancer?!
trsohmers 3 hours ago|
It actually stands for "lizard brain"... it is (or at least was) an Infineon Aurix control and monitoring microcontroller, they may have changed to a newer one.
MengerSponge 3 hours ago|
Fun linguistic quirk: Americans tend to call it a "wiring harness", whereas Brits prefer "loom"
nandomrumber 2 hours ago||
As a result of this and the child comments…

As an Australian. I often find myself saying things like “the wiring hardness, or loom, or cable, or whatever were calling it this week”.

Exasperated by living in a state other than the one I grew up in. South Australians are often easily spotted by their pronunciation of certain words.

Hackbraten 2 hours ago|||
And, of course, Germans have a dedicated composite noun for it: Kabelbaum (literal translation: cable tree).
thrownthatway 2 hours ago||
I always like to point out that Germans don’t, in fact, have a word for everything.

It’s just a phrase or sentence with spaces removed.

Knowhatimsayin.

shaftway 20 minutes ago||
In German that's called Wortbildungsfähigkeit, or in English, WordStructureCapability
Dan_- 3 hours ago||
So what do you call the tubing around the wire bundle? That’s what we call “loom”.
stackghost 2 hours ago||
In Canada we generally call it the sleeve, or the wrap.
MengerSponge 2 hours ago||
I'd understand either of those, but I'd go with "tubing"

https://www.3m.com/3M/en_US/p/c/electrical/wire-cable/tubing...