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  connectors. i need to reverse engineer the wiring and pinouts.

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  mini-repair monday: my EGA monitor has been slowly fading away over the past few years. at VCF West this year it was too dim to use and i had to borrow one. but let's go fix it now!

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  new book just landed on my bench: The Secret Life of Circuits, by @lcamtuf@infosec.exchange ! (soldering iron not included)

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  me: so i name all my cats after numbers! them: oh? me: cat3, cat5 them: you skipped four-- me (ignoring them): cat5e them: but 'e' is not a number me (continuing to ignore them): cat6, cat6a, cat7, cat8

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  i was recently reminded that this connector is real, and can hurt you.

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  guess how much this switch costs. (no cheating now)

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  Chip companies: you pick QFP or LCC NXP: this one is both!

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  ever had questions about how professional PCBs are designed? i'm answering questions LIVE! https://www.twitch.tv/tubetimeus

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  oops, i cloned another sound card! this is the Beavis Ultrasound, an open source clone of the Gravis Ultrasound PnP. yes, i know there are already clones of this card, but mine provides the full schematic and matches the original board layout. https://github.com/schlae/BeavisUltrasound

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  electronics flea market thread! 🧵 this is at West Valley College in Silicon Valley.

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  on the bench of healing: this gravis ultrasound PnP 1.0. it's in really rough shape!

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  be sure to have that disk in hand!

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  ahh, the HP 9133A - the largest and heaviest external 3 1/2" floppy drive ever built. let's get it working! 🧵

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  another early morning electronics flea market at West Valley College here in Silicon Valley!

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  new project drop: this is the design for my IBM Micro Channel DBA-ESDI drive emulator. super early alpha version! https://github.com/schlae/difnif

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  found a pushbutton switch bank with absolutely GNARLY tin whiskers!

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  here's an interesting TV, let's see who knows what it does.

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  this is what happens to every cable you throw away. think about that before you get rid of that box of computer cables you've been hoarding since 1997

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  found a DE-3 in the wild, folks

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  just wiring up a fuse plug, as you do.

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  SPACE BALLS!

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  this is a Nuvistor! it's a super-advanced vacuum tube that could have beaten the transistor.

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  RE: https://hachyderm.io/@sen/116358363703042877 another cursed D-sub connector, wow!

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  today at the Computer History Museum we adjusted the read timings on the 1401 computer's 1402 card reader. to do this, we load a deck of "555" timing cards, which have the number 5 punched in columns 1-3 and 78-80. seems that 555 really is a magic number for timers...

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  feast your ocular orbs on this cross section of a miniature Nuvistor vacuum tube.

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  RE: https://ioc.exchange/@azonenberg/116184704294419148 great failure analysis with some good photos

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  RE: https://social.treehouse.systems/@lillian/116077971040259901 i uhh was involved in designing a device that did this. not my decision and i pushed back pretty hard, but was overridden. it ended up blowing up someone's phone.

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  a bad Leisure Suit Larry game? no, it's Roy Lichtenstein in 1973.

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  RE: https://oldbytes.space/@bitsavers/116150878122688367 this is really good

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  did you know that you can find free Cortex M0 development boards at the side of the road? folks call them disposable vapes but they're hackable, and i've reverse engineered a bunch of them! see https://github.com/schlae/VapeRE/