this post was submitted on 18 May 2025
466 points (96.8% liked)
Technology
70248 readers
3990 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related news or articles.
- Be excellent to each other!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
- Check for duplicates before posting, duplicates may be removed
- Accounts 7 days and younger will have their posts automatically removed.
Approved Bots
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Clearly an extreme case of overengineering. A elevator has no business running more than a few microcontrollers.
But how else can it be safe to connect to the internet?
You need to be on-site to fix it anyway, just access the debug port.
In highrises with lots of stops and users, it uses some more advanced software to schedule the optimal stops, or distribute the load between multiple lifts. A similar concept exists for HDD controllers, where the read write arm must move to different positions to load data stored on different plates and sectors, and Repositioning the head is a slow and expensive process that cuts down the data transfer rate.
This requires little more than a 286. It's an elevator. Responding in times measured in seconds. What kind of computations do you think are required here? Imaginary quaternion matrixes? Squared?
Yes, but if you have it as a Windows program it's easier to configure on a screen with mouse and keyboard, change settings, display help files or give the source code to someone else to make changes or add features.
also it was probably not too expensive to grad a bog standard PC off the shelf and do it on that. I've see raspis in the wild doing tasks like that. and those will be outdated by the time they're replaced too
But how else can it book requests for priority access, and verify the credit card for whoever booked the elevator?
Ah, the blossoms of unimpeded, wild capitalism.
Qube cinema servers only got off XP in 2015. They're still on 7 though.
It's probably only the screen component that is running an old version of embedded windows.
That's what I think too. And then I see "Their systems are built into everything around us", which basically only applies to PCs and laptops. What is built into pretty much everything around us, is GnuLinux.
Many things, but far from that.
Yeah, it was a statement, not a question. But it's partly my fault for not using the comma appropriately. Fixed.
Not even GNU - just Linux.
Yeah yeah, something something GNU/Linux blah blah copypasta....
Screen? In a elevator?
How else are you gonna show ads?
I hate that you are right.
Yes? That is not that unusual and it is mentioned in the third sentence of the article.
Those screens can easily run on an integrated Raspberry Pi microcontroller, they dont exactly have complex graphics
RPi is not a microcontroller.
We are far away from the release of the Raspberry Pi if that screen is running an early version of Windows CE. Putting a PC in the elevator to drive the screen was probably the most cost effective solution.
Was but theres no reason to keep doing that
There's not particularly good reason to stop doing it in that scenario either.
You have an offline technology stack in that elevator that has been doing the job correctly for 20 years. Why take on the expense and risk of changing things that aren't currently broken?
It would be crazy if you are building new to resort to that stack, but for an established elevator, why bother?
Same for some old oscilloscopes at work. I'm not crazy about the choice but I can hardly suggest it would be practical to change it while the oscilloscopes still do their function.
I would say it's a problem if the stack is online, but if it is self contained, the age of the software doesn't make it a problem in and out itself.
New ones probably use something newer. The 20 year old elevator in a hospital will only be upgraded if something breaks.