ChaoticNeutralCzech
@ChaoticNeutralCzech@feddit.org
- Comment on This is what happens when AI trains on Instagram shitposts 14 hours ago:
I saw someone with a “No matter what I’m wearing, it’s a no” sticker on their phone.
English people: 🫤
Czech people: 😏
Spanish people: 🍑👀 - Comment on This is what happens when AI trains on Instagram shitposts 1 week ago:
My answer? A no.
- Comment on This is what happens when AI trains on Instagram shitposts 1 week ago:
Wednesday does contain dnes, which is Czech for “today”. A nice mnemotechnic for the most difficult one.
- Comment on VR controls are the worst 1 week ago:
Alright but you still use 128 colors and the dithering looks like you only use 16
- Comment on VR controls are the worst 1 week ago:
Fun fact: GIFs have a redefinable 256-color palette, meaning greyscale images with visible banding or dithering are poorly optimized
- Comment on Easy Delivery Co. I'll just be a little car driving a kei truck around a mountain town. 2 weeks ago:
Witch living in a cozy hut in an enchanted forest
- Comment on Bring it back 2 weeks ago:
East Africa splitting from the continent and the resulting strip of lakes is a relatively recent phenomenon.
- Comment on Google Maps Reviews in Germany are utterly pointless 2 weeks ago:
rating:subjective:ChaoticNeutralCzech=1review:subjective:ChaoticNeutralCzech=“Nowhere near American Flag Blue as advertised” - Comment on Just Think About It 2 weeks ago:
a VW of course
- Comment on Love Wins 2 weeks ago:
Don’t forget a master switch between it and mains. Otherwise, line workers could get injured.
Bonus points if it auto-switches based on whether mains is available.
- Comment on A customized delivery experience 3 weeks ago:
encourage to wait
How much do you pay them to compensate for the wait when they’re not delivering other items?
- Comment on Golden shovel, only for 39.99 plus shipping 3 weeks ago:
Sorry, shovels are sold out and production capacity all booked until mid-2028! If you want to remove the pile of toxic mining waste our biggest shovel customers made in your backyard, better book a shovel you’ll maybe receive in 2 years! Also, there is the secondary market, looks like you can just about afford a rusty spoon!
- Comment on Why put data centers in space? 3 weeks ago:
Meanwhile China is putting them underwater for passive cooling.
- Comment on how can text from an image not show up in a thumbnail? 3 weeks ago:
Such files with the .jpg extension are known as Progressive JPEG (progressively higher resolution copies of the image). Not to be confused with progressive scan video, as opposed to interlaced like NTSC. In turn, that should not be confused with Adam7 interlaced PNGs (which, ironically, accomplish the same goal as Progressive JPEG).
- Comment on how to cut aluminum pipe with hardly any comments about flock cameras 3 weeks ago:
FYI, if you’re a Flock employee: You’ll need a bigger one for the 2⅞ poles on your job
- Comment on When they didn't read the manual 4 weeks ago:
Good computer mice are rat-sized and feel like a toy car when gripped. Not a puck.
- Comment on When they didn't read the manual 4 weeks ago:
Yes, scrolling moves the content. As if it’s being gripped by the bottom of the wheel I’m rotating with my finger from the top.
Imagine a toy monster truck on a sheet of paper. Push the wheels forward, page moves backward.
- Comment on Are you too young to remember these? 4 weeks ago:
Tjat (RCA component) was fucking stupid.
Why 3 connectors when no consumer ever mixes color channels? (mixing between sources requires external sync, which is only on pro gear and an extra cable anyway)
Why did they not decide between YPbPr and RGB before writing the standard?Should have just adopted SCART (European connector for bidirectional A/V, RGBA and kind of CEC), dammit
- Comment on Are you too young to remember these? 4 weeks ago:
Yes, SCART’s features are fucking clever but it got unwieldy thick because by the spec, each cable had to be separately shielded. Even the widescreen control signal that’s mostly DC. Why not and use differential pairs to reduce thickness and cost, or modulate the audio and control signals together, add a 5V rail to accomodate little demodulating converters if you want separate audio devices, and eventually power PVR/tuner dongles? Most people use TV speakers anyway, that’s the whole point of a single connector of an A/V standard. Not to mention how easily it fell out, almost every other connector holds better, and the ports are hard to feel and align on the back of the TV. If it’s a giant 32" one nearly flush against a wall, good luck connecting the VCR! I think it’s because of these problems, the biggest one emerged: SCART never became a worldwide standard. Nowadays, TVs are made for a world market, so even North America finally enjoys PAL-compatible sets (while most Europe-market ones and many VCRs were 3-standard since 1990), but unfortunately SCART is basically gone, not to mention very few capture cards were made with real RGB input because RCA component is stupid (why 3 connectors when no consumer ever mixes color channels? (mixing requires external sync, which is only on pro equipment and an extra cable anyway) why not decide between YPbPr and RGB before writing the standard?)
clever Frenchies
Don’t say that. SCART is awesome despite its flaws but the exacth also cursed half of Europe with fucking SECAM. Imagine needing a 64µs, 5MHz-bandwidth delay line just to decode color at all (unlike NTSC/PAL’s QAM, SECAM’s FM allows just a single chroma channel per line, alternatingly carrying U and V axes), and a frequency-modulation+pre-emphasis system in every console/camera/DVD player to encode it, plus no color killer option (disabling the colorburst) for sharp B/W like on the Apple II!
In PAL, information between subsequent lines was used too but only to correct recovered carrier phase between colorbursts, which was optional (cheaper sets kept NTSC-style hue controls) and could be handled by a locked oscillator rather than a whole-ass delay line (before shift registers (digital sequential-access-memory), every color set had fucking piezo transducers and physical waves travelling through precisely cut quartz, WTF?!).
- Comment on [deleted] 4 weeks ago:
Not me, I just theorized. I met people from C3PB (@thefeiter@chaos.social) with their giant Parklight24 display and wondered what it could be used for. Also, @mat3@chaos.social had a Geascript display ar 39c3, small but with proportional font.
- Comment on [deleted] 4 weeks ago:
The anode current for such a small screen area is pretty low. The flyback also provides a few hundred V to 1 kV for various grids like focus and brightness of the electron gun. Since they all use voltages adjustable in different ranges, a single series of resistors and potentiometers is employed as an adjustable potential divider, consuming usually less than 1 mA (1 W).
- Comment on [deleted] 4 weeks ago:
I’ve been to 39C3 and EH23. Here’s a photo of my badge, advertising something I shadily imported to Germany :)
witter.cz/@sebi@23.social/116374451432382202
There is a 12V-negotiating USB-C module (I had to mod it to support any of my powerbanks, and the only one is the size of the thing, twice as heavy and a fire risk (puffed-up 20Ah cell shoddily replaced with found 6x 18650), but on EH23 I was smart enough to get a long-enough cable to reach a pocket so my neck didn’t hurt.
The screwdriver, from a shitty Merkur-like construction toy set, is plus-shaped but not as sharp as Phillips and non-magnetic, making it easy to adjust the potentiometers (a Phillips would wear them out, and a flat one would be less convenient) without the display getting all wonky (even the magnetic field inside Hamburg S-Bahn trains from their power lines makes it wobble!)
The 3 kV is presumably only reachable via the thickly insulated wire between the flyback transformer and anode, however some high voltage does exist on the PCB between the CRT grids (for example, there’s about 48 volts between the brightness and contrast potentiometers). I used a piece of acrylic to cover the bare PCB but it fell off (shitty transparent tape) and I got shocked through my T-shirt. A little unpleasant but the current is low, especially after the small HV capacitor discharges, it felt like a normal static electricity fluffy clothing incident. I prepared the same piece of acrylic with holes for potentiometers for the front but it was matte, fell off even sooner, made it hard to adjust, and it was unlikely someone would reach inside so I abandoned it.
- Comment on [deleted] 4 weeks ago:
Yup. The metal anode is phosphor-coated. What’s more interesting: it’s using a standard “defection IC” to detect sync pulses and generate horizontal and vertical ramps but the focus and horizontal width change dynamically as the picture is scanned top-to-bottom to achieve keystone correction and maintain sharpness.
- Comment on [deleted] 4 weeks ago:
The power draw is 4 watts, not much more than a color LCD of this size and brightness, and most of it is the CRT heater. Very little ionizing radiation at 3 kV.
- Comment on [deleted] 4 weeks ago:
I use the screen module from one of these as a nametag at cons. It accepts regular composite video and can go up to 120 Hz, or presumably even more if I tweak some component values. Jan Šlehofer used a color wheel to make a Col’R’Tel and dared to call it “solid state” in his YouTube video (the nearest Czech word is tranzistorový, which means no vacuum tubes as switching devices and he does fill this criterion but “solid state” additionally means no moving parts (that would require a super rare liquid crystal color shutter - LCCS - even Daniel Kobrle aka Danyk/DiodeGoneWild was unable to source a replacement one for his luxury early digital Tektronix oscilloscope) and arguably no CRT, although even 1960s TV sets were marketed as “solid state”).
- Comment on How I, a bike rider, look when my coworkers complain about gas prices 4 weeks ago:
Petrol station technology limitations were why UK partially switched to liters in the early 80s: most pumps could only show/calculate up to £1.99 per volume unit.
- Comment on Please help to test my first game 4 weeks ago:
Use integer scaling when rendering limited-palette pixel art, especially as GIF.
- Comment on Boys will be boys 4 weeks ago:
It’s called whole foods
- Comment on modern classic 4 weeks ago:
It’s a 90s TV. It probably has S-Video so worth keeping. (Reminder that almost all European TVs from 1990-2010 have SCART, which is unwieldy thick but SD RGBA, and are PAL- and NTSC-compatible)
- Comment on Tried to login to the arch wiki but was given a 3 minute crypto challenge. 5 weeks ago:
My country’s public TV stopped offering subtitle downloads for shows that can’t be streamed online
