this post was submitted on 23 Oct 2024
451 points (98.5% liked)

Ask Lemmy

26875 readers
1971 users here now

A Fediverse community for open-ended, thought provoking questions

Please don't post about US Politics. If you need to do this, try [email protected]


Rules: (interactive)


1) Be nice and; have funDoxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them


2) All posts must end with a '?'This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?


3) No spamPlease do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.


4) NSFW is okay, within reasonJust remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either [email protected] or [email protected]. NSFW comments should be restricted to posts tagged [NSFW].


5) This is not a support community.
It is not a place for 'how do I?', type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email [email protected]. For other questions check our partnered communities list, or use the search function.


Reminder: The terms of service apply here too.

Partnered Communities:

Tech Support

No Stupid Questions

You Should Know

Reddit

Jokes

Ask Ouija


Logo design credit goes to: tubbadu


founded 1 year ago
MODERATORS
 

I don't mean BETTER. That's a different conversation. I mean cooler.

An old CRT display was literally a small scale particle accelerator, firing angry electron beams at light speed towards the viewers, bent by an electromagnet that alternates at an ultra high frequency, stopped by a rounded rectangle of glowing phosphors.

If a CRT goes bad it can actually make people sick.

That's just. Conceptually a lot COOLER than a modern LED panel, which really is just a bajillion very tiny lightbulbs.

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 135 points 3 weeks ago* (last edited 3 weeks ago) (5 children)

I like the look of vacuum-fluorescent displays (VFDs) -- a high-contrast display with a black background, solid color areas. Enough brightness to cause some haloing spilling over into the blackness if you were looking at it. Led to a particular design style adapted to the technology, was very "high-tech" in maybe the 1980s.

OLEDs have high contrast, and I suppose you could probably replicate the look, but I doubt that the style will come back.

https://en.wikipedia.org/wiki/Vacuum_fluorescent_display

EDIT: A few more car dashboards using similar style:

https://s3.amazonaws.com/skillshare/uploads/session/tmp/50c99738

https://www.pinterest.com/hudsandguis/retro-car-dashboards/

And some concept cars with similar dash:

https://www.hudsandguis.com/home/2022/retro-digital-dashboards

Some other devices using VFDs:

https://i.ytimg.com/vi/PkPSDOjhxwM/maxresdefault.jpg

https://ae01.alicdn.com/kf/HTB1_TIdcGmWBuNkHFJHq6yatVXaZ/LINK1-VFD-Music-Audio-Spectrum-Indicator-Audio-VU-Meter-Amplifier-Board-Level-Precision-Clock-Adjustable-AGC.jpg

[–] [email protected] 25 points 3 weeks ago (1 children)

My kid's car is like this. I've been calling it retro-futuristic, which I think is a pretty apt description.

[–] [email protected] 13 points 3 weeks ago (1 children)

Oh what kind of car? I’d love for this style to come back for a bit.

[–] [email protected] 28 points 3 weeks ago

Suzuki Aerio SX. I can't find a picture that shows the whole dash, but here's part of it:

[–] [email protected] 14 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Many receivers and amplifiers still have VFDs to this day. I still wonder why, LCD has to be significantly cheaper.

They look cool as hell though, so I appreciate that they go the extra step.

[–] [email protected] 3 points 3 weeks ago

As someone who also likes VFDs, I've fully expected that they'd be extinct in new products by now thanks to cheap LCDs and OLED. But I find it awesome that they're still hanging in there.

[–] [email protected] 3 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Newer, but I quite like the gentle amber LCD (not LED) displays of my car. At night it’s bright enough and sharp enough without being visually loud. I wish more of these displays were still being made, I’d love to use them in car-centric Arduino projects and data displays that would be consulted at night or that sort of thing.

I always ask my friends “How the fuck do you live like this?” when I hop into a car and the music UI is a garish color searing itself into my retinas permanently.

Thankfully, advertising companies have identified this marginal comfort I find in the warm interior lighting of my car and have proceeded to mount insultingly blinding screens all over the city.

The city being the midrise urban sprawl north of Beirut. What do you mean regulations on brightness habibi? You think you live in Paris? Imagine this: half the street is unlit because the power is out, but the advertising company’s invasive bullshit budget™ has enough foreign cash to burn to keep generators running all night for these shitty ads. Gotta beam an extra few kilowatts of photons straight into this sleepy driver’s eyeballs while they operate a motor vehicle, on a highway that a lot of people cross by foot. There’s a special on fish at the fancy supermarket, how will I live without that knowledge?


~~Thankfully, the “state” of Israel has identified that the civilian structures of Lebanon mildly inconvenienced me, and has proceeded to~~

[–] [email protected] 2 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Newer, but I quite like the gentle amber LCD (not LED) displays of my car. At night it’s bright enough and sharp enough without being visually loud. I wish more of these displays were still being made, I’d love to use them in car-centric Arduino projects and data displays that would be consulted at night or that sort of thing.

Not sure if you mean VFDs or amber LCDs, but Matrix Orbital sells both sorts in small quantities that you'd use in a project and can interface to a microcontroller -- I was interested in them myself when looking for small VFDs, years back. They're going to be segmented alphanumeric or grid displays, though, not things with physical custom display elements like those car dash things, but that's kinda part and parcel of small-run stuff.

https://www.matrixorbital.com/

https://www.matrixorbital.com/blc2021

Just choose the "amber" option if it's an amber LCD you want.

Can also get their displays via Mouser or Digikey.

[–] [email protected] 3 points 3 weeks ago (1 children)

That’s exactly the kind of display I’m talking about. Nice to see they’re still around.

The ones I have are all just grids, higher resolution than these but still comfortingly blocky. I’ve actually replaced the dash display recently since the original one got deep fried under the sun and lost all contrast when the weather was above 20°C.

[–] [email protected] 1 points 3 weeks ago (1 children)

Ah, good to hear it. They do (or did, and I assume still do) also have higher res displays.

Going back to an earlier bit in the conversation, where you were concerned about light sources in the car, I think that auto-dimming might also help (not just with VFDs, but the brightness of any in-car display). My car dash has the option to automatically set brightness based on ambient light levels (something that I wish my desktop computer monitor could do...part of "dark mode"'s benefit is a mitigation for devices that don't do this). I don't know if that was a thing back in the 1980s or so, when these display designs were popular.

I also kind of wonder if eye-tracking, which has come a long way, could be made reliable-enough and responsive-enough to toggle off displays if the car can detect that a user is looking somewhere away from them. Maybe be conservative, not with some critical displays, but stuff like the radio or clock or something. Eye tracking systems normally use the near-infrared, as I understand it, not visible light, so I'd think that you could theoretically do it in a darkened car without problems.

[–] [email protected] 1 points 3 weeks ago

All of the car’s interior lighting (all in amber) does dim automatically when I drive under a bridge or into a tunnel, and automatically dims when I turn on the headlights. So some rudimentary dimming was implemented in 2000 when it was made. No clue where the sensor is though.

[–] [email protected] 2 points 3 weeks ago

As a kid, I had this tabletop video game called "Dracula" that featured a multicolor VFD display. I loved that game.

https://www.youtube.com/watch?v=HXXXoH-Wjvg

[–] [email protected] 2 points 3 weeks ago

VFDs are the shit!