Gregory's Server
Introducing the 13W3 Video Snake Oil.
because lots of the 13W3->VGA adapters out there aren't wired correctly, i made one that is universal! check it out at https://github.com/schlae/13W3
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 @tubetime doggone it. I’m in Menlo Park this weekend but forgot that the FM was this morning. @tubetime We *almost* went today. Had plans and everything. But circumstances said no. Maybe next month. So glad its back.
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Wild guess...left is for a Kaypro PC-Clone ISA expansion bracket for a parallel port? :blobcatdunno: 
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  @tubetime Why does that CRT have an electrode in the centre? I've never seen one like that.  i've released the design files for this Sperry Panaplex clock. the firmware isn't done, but the hardware basically is. see https://github.com/schlae/SperryClock  @tubetime I love the animated test(?) pattern. Looks like a sine wave scrolling over the screen. here's a diagram of the pyrotechnic ignitor used to start the rocket motor of the Nazi V-2 ballistic missile.  @tubetime What is the source of this picture? Fig.174 and in English instead of German.
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   so i umm spent a bunch of money on this silly thing--a Pentium 90 CPU card for the PS/2 model 95. it was advertised as being working, but i have my doubts. 🧵 someone's been hacking on the card, adding this bodge wire. it bridges 5V over to two pins on the CPU socket (AN1 and AN3) presumably to support a faster Pentium Overdrive. 
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@tubetime Not sure how commonly it was used, but all versions of OS/2 support Ring 2 drivers. https://www.os2world.com/wiki/index.php/Databook_for_OS/2_%E2%80%93_Chapter_2_%E2%80%93_Inside_OS/2_Warp#Ring_Protection_mechanism @tubetime for some reason I thought 16 bit protected mode only existed on the 286 and wasnt preserved on the 386. Is that not the case? this is pretty close. after i took this photo i filed away some more and also sanded down the surface to get a smoother finish. @TechConnectify huh, the VCR's built in clock is displaying the same time that i use whenever i take a photo of a clock. 🤔 @tubetime @TechConnectify I've modified all my clocks to display only that time all the time.  running out of space in my gmail account, i learned a few interesting facts. 1. attachments are not reencoded, and the base64 versions are what counts against your storage limit. 2. threads with quoted attachments (like images) double count those images against your storage limit 3. the Google One storage manager can't order your messages by size 4. the storage manager won't let you delete messages, or even just attachments. it only deletes ENTIRE THREADS which i learned the hard way. 😭
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@tubetime @ReticentTurnip man its so hard to get into google cuz they only hire elite coders  @tubetime I recall reading some speculate about the damage to Google this Gmail thing could cause. The storage costs of free email vs the user expectations. Those are not easy keywords to search for a news story however. @tubetime #2 is worse than that. Each non-pruned reply is an additional copy that dings your storage. Top posting plus hiding below that MASSIVELY in outages each reply to include the full email thread from that message back to the original thread. Yep, base64 takes 4/3 times the attachments normal size. remember that very large logic analyzer i got at the Electronics Flea Market last year? well, it broke again :( (birdsite thread: https://twitter.com/TubeTimeUS/status/1523349805614788608
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@tubetime Does this do serial protocols as well? Ive been looking for a serial / parallel analyzer. The tla714/5 also look good but this has a very nice large screen @tubetime :ablobcatheartsqueeze: :ablobcatheartsqueeze: :ablobcatheartsqueeze: :ablobcatheartsqueeze: find this particular hole in the air vents on each side at the back. poke something through to unlatch it.  @tubetime The double height version of this is super-obvious to open, almost like they're making up for this. it's time for another early-morning electronics flea market! it's at a new location this year. I arrived at 6am but they hadn't let the sellers in yet, so everyone was just waiting around.
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 here's an interesting question. in the days before ubiquitous quartz clock movements, there were mechanical clocks that used a solenoid or a motor to automatically wind up the mainspring. i remember hearing some clocks make a "clunk" sound every few minutes, or a growling sound once or twice a day. anyone remember that?
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@tubetime That's actually a pretty old system. Way back Harrison already used an automatic rewind system to minimize the difference in rate due to different winding status. Of course, he used weights to drive that, but still. "Modern" electromechanical pendulum clocks all used a similar system, driven by electromotors. If you go to a clock museum, you will find plenty of those. Later models would use solenoids to directly drive the pendulum, in order to increase the Q factor. this is a Nuvistor! it's a super-advanced vacuum tube that could have beaten the transistor.
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  https://www.youtube.com/watch?v=uTHpJZ3qd-c check out this cool ancient vacuum tube photocopier. @tubetime Which he then promptly, specifically mentioned - complete with link. Hah. Anyhow, that link to the newly digitised version of a programme I first watched aged 13 or so, when first broadcast... |
@tubetime @Stormgren Neat!
I do remember that pretty much any 13W3-VGA adapter required that the monitor supported sync-on-green — does that rule apply to this?
(Granted, I had to offload my Sun hardware 12 years ago, and don't have any CRTs anymore anyway. 🥲)
@tubetime I wonder if it would also work with a NeXTstation.
@tubetime I always found it nuts how the industry came up with this fancy connector which preserved impedance matching to an almost obsessive degree then didn't standardize the pinout making it incompatible between vendors.
An insane degree of effort to then just do it wrong!