that's this one: https://twitter.com/Foone/status/1187185779484721152 … although obviously it's one in much worse shape. far cheaper, though.
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hey, remember how I tweeted that weird huge keyboard the other day? guess what just arrived in the mail today.pic.twitter.com/DcL2BhJFPM
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It's some kind of rubber dome keyboard. Sorry, mechanical keyboard nerds.pic.twitter.com/6pDDGBCq2B
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which hook into this white cylinder that slides into this black switch base.pic.twitter.com/Pg3qYNysSZ
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And yep, it's got a lock on it! hopefully they left it unlocked, or I'm gonna have to find my lockpickspic.twitter.com/w8UTc8FYfE
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Turning it over, it's in even worse shape. This is structural duct tape, mind you.pic.twitter.com/inVYnIBhgp
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Underneath that panel, it's... wow. Complicated! This isn't a dumb thing, this has Smarts.pic.twitter.com/hve35oOwbu
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And this here is probably the main CPU. It's a MC68HC11, an 8-bit microcontroller.pic.twitter.com/mMhGbNJvXq
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and some ram. 32 kilobytes. that's a lot for a fucking Keyboard, you know?pic.twitter.com/P3b8vFV7ST
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it has a lot of connectors. I think these are some sort of SDL connector?pic.twitter.com/Tm1GU4J6qQ
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huh. the PCB of the keyboard says it's from "Advanced Input Devices", not ABB.pic.twitter.com/HnenPXprbe
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Here's the bottom of the keyboard PCB. It had some annoying tape on it that I couldn't easily remove.pic.twitter.com/kGkvkh353O
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Interesting design on the pads. it's a space filling curve!pic.twitter.com/4C0QKrnI7Y
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Those of a nervous disposition may want to look away now.pic.twitter.com/16lRq9r7kH
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well, at least this half will be relatively easy to clean, since it's just some kind of rubber.pic.twitter.com/n5is0vi541
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So I had to pull off all the caps, and now there's the switch base that I gotta pull out. but good lord, this is messy.pic.twitter.com/xpp1uKmVnb
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and of course the plastic that goes between the keys IS ALSO DIRTY this thing was used in a DIRTY FACTORY I don't mean a factory that was dirty, I mean it like you might say "a car factory" it was used in factory that made one product, and that product was Dirties.pic.twitter.com/9DtkT14QHa
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Turns out it's an EPROM (it has a UV window), an ST M27C1001-15FIpic.twitter.com/xmlNIzBsSP
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only about 5k of the 128k is used, and there's no obvious strings in it.
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so I'm soaking and scrubbing the plastic bits. I'm going to see if I can figure out what kind of keyswitches these are so I can replace the missing ones
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