Slurrrrrrrrrrrrrrrrrrrrrrrrrrrrp
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Idk, if they’re plugging in one for each screen it sounds like a lot; there are libraries to do most of this.
X11 can easily handle multiple screens.
Not sure about the Pi's limitations but COTS SBCs can too.Can't read the text in the image but i'm informed it's a crash.
Which would mean that machine, or that virtual machine, is not on any of the other screens. Right?
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You'd think a damn sticker would be good enough
But what about yet another bright light in someone’s face? Do you not want another bright light in someone’s face? Everyone loves bright lights in someone’s face!
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I've seen a very similar print out when installing/loading Arch for the first time.
I meant the machine itself! The print out is your typical systemd boot, though they're usually covered by a distro splash but it can be disabled.
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You're forgetting the main driving factor behind being able to personalize a screen vs a plastic label: advertising.
What I describe goes well beyond things with screens.
For example computer mice have a microcontroller inside (and unless it serves a mechanical function, not much more than that) and cars have several, only one of which actual handles a proper screen (it's actually a microprocessor rather than a mere microcontroller).
The simplest microcontrollers have nowhere near enough memory to handle any half-way decent display (some nothing at all, some can just about handle a two-tone 320x200 display over I2C or SPI, some can handle 640x480 16-bit RGB but without animations as they don't have enough memory to actual have a buffer for image composition) and yet they keep getting sold in massive numbers.
Pretty much all digital electronics out there no matter how invisible to users has been replaced by embedded microcontrollers or, in a some use cases, single function controllers (which are basically microcontroller programs converted into integrated circuits).
Embedded computing was a massive revolution in digital electronics.
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You'd think a damn sticker would be good enough
Human replaceable printed paper labels, manual stick.
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Is it just me who feels that having one processing unit per display is a waste?
I mean, I get it why they did it (it's way easier to just have one SBC per-display, both on the hardware and the software sides), but if designing such a system I would still try to come up with a single board solution if only because waste gets on my nerves.
I'd argue that a custom board is more wasteful since they are single use. Using a cheapo COTS processor that drives a single display and runs Linux is reusable in the long run.
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Human replaceable printed paper labels, manual stick.
It could just be a backlit panel that you place a semi-transparent logo in front. Could be magnetic or slid into place. More resources than a sticker but probably far less than a system-on-a-chip running an OS and displaying the same picture on a monitor all day.
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This implies every drink and its display is handled by its own computer running linux. Potentially mtndew has a different IP than coca cola.
I wonder if there is a refill cartridge with the flavour in it that the OS reads from to always display the right logo. Or maybe a touchscreen that the workers use to change it manually.
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This person trying to blue themselves.
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Can't read the text in the image but i'm informed it's a crash.
Which would mean that machine, or that virtual machine, is not on any of the other screens. Right?
Yeah, it seems as though it's one controlling (virtual) machine per dispenser, so 1:1 to the screens.
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I'd argue that a custom board is more wasteful since they are single use. Using a cheapo COTS processor that drives a single display and runs Linux is reusable in the long run.
True, such a low number of production units design would really only make sense if you could find an off the shelf solution to drive multiple displays.
If these displays are not supposed to be animated and they're reasonably low resolution (say, 800x600 20bit RGB or less), they could be connected via SPI and pretty much every microcontroller out there has multiple SPI ports, so even a cheap SBC would work for that). However I expect that getting XWindows or Wayland in Linux to work with such displays would be a PITA.
I've only ever got software running under Linux to control a tiny 2-tone display via I2C - on an Orange Pi SBC - and it's totally its own thing which happens to be running under Linux sending low-level commands via the I2C dev and not at all integrated with X-Windows or Wayland. This would also work fine if the comms was via SPI (in fact the code barelly changes since I'm using a library that does most of the low-level work for me).
To just display a static image or a sequence of static images loaded from storage in a bunch of screens low-resolution enough to support SPI (so 800x600 or less) I expect something like that would be fine.
The more I think about it, there more I expect this thing could run on a single $50 SBC as long as the connector exposes at least an SPI device and 8 independent I/O lines (given how SPI works, shared SPI bus is fine with one separate Chip Select line for each screen as long as the SPI device under Linux can run on a mode that lets your code control the CS line itself, and the other 4 I/O lines are for touch detection) assuming touch position is irrelevant.
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Yeah, it seems as though it's one controlling (virtual) machine per dispenser, so 1:1 to the screens.
Im really not sure it's vm's though. Thats separate displays.
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Oh yeah baby crash my bootloader!
Pump me full of bloatware and make my integers overflow🥵
I want you to leave my USB port dysfunctional for days and my ram displaced come on baby do it make me BSOD!!!
🥵
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Im really not sure it's vm's though. Thats separate displays.
I'm not sure either and it's most likely not VMs, it's one CBS per box, but it could easily be one VM per display.
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Is it just me who feels that having one processing unit per display is a waste?
I mean, I get it why they did it (it's way easier to just have one SBC per-display, both on the hardware and the software sides), but if designing such a system I would still try to come up with a single board solution if only because waste gets on my nerves.
My local gas station now has screens on the pump. Not the big unit, but the part you put in your gastank. It shows shitty ads. Also in the Netherlands you can't lock the gas pump, so you have to manually press it to get more fuel, so you are almost forced to watch shitty ads.
It's exactly like this
https://www.team-bhp.com/news/ads-fuel-dispenser-nozzle-havent-seen-anything -
At least the cooling is sufficient.
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Oh yeah baby crash my bootloader!
Pump me full of bloatware and make my integers overflow🥵
I want you to leave my USB port dysfunctional for days and my ram displaced come on baby do it make me BSOD!!!🥵I hate to break ot to you, but this is a linux drink.
All that will you'll get is a kernel panic -
You'd think a damn sticker would be good enough
How do you charge for a service contract on a sticker?
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I'm not sure either and it's most likely not VMs, it's one CBS per box, but it could easily be one VM per display.
wrote last edited by [email protected]But then youd need hookups per display,
Serial? Usb? Can count lines/chars, get resolution from that.
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Until it displays porn
I mean it would take a dns hijacking to do that and if some has control of your network work like that then you have bigger problems then using FTP
