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26 Jun, 14 tweets, 4 min read

another day, another trip to Excess Solutions in San Jose!

oooh a VESA bus multi IO card!

this multi IO card comes with "DATA SECURITY & VIRUS PROTECT" 😂

neat! a VESA bus graphics card!

@Foone

there are a bunch of other neat cards in here. clearly @Foone hasn't been here yet😂

I'm not buying all of them, don't worry lol

ooh look software

a pink floppy disk. where the heck are you Foone

MS-DOS 3.2 🤔

windows/386.

trans x95 clones? 🤔

windows 95 on floppy disk!

while chatting with the employee at the register, he told me that he designed a component of the Pivot display while he was at Radius. then I remembered the LGR video. small valley!

what I needed to buy there today / what I came home with 😂

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@TubeTimeUS

28 Jun

i've been thinking about the Surfside condo collapse. 🧵

i'm a bit hesitant to write about it, mostly because i keep thinking about the folks trapped in the rubble. it makes an engineering discussion seem a bit cold-hearted.

but engineering affects all of our lives -- which, on a daily basis, literally depend on engineers doing a good job. most people take this for granted. it's probably why a catastrophic failure like this can affect us so deeply.

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@TubeTimeUS

27 Jun

a while ago i picked up this old DAT drive for a very good price. let's see if i can get it working!

it is the Mitsumi DK4-SS4001, a SCSI DAT drive.

took out a bunch of screws and now we're in! DAT drives use a helical scanning system just like an old VCR, but in miniature. the round thing in the middle is the rotating head.

Read 17 tweets

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@TubeTimeUS

26 Jun

today I picked up some VESA Local Bus graphics cards. it's time to test them out and benchmark them!

first I'll start with a generic Trident 16-bit ISA cards for comparison.

oh almost forgot: how about the Graphics Gremlin? it's very very s l o w

Read 9 tweets

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@TubeTimeUS

19 Jun

let's try and get this paper tape reader working. I have no control board for it so this is going to be interesting

here's a 4-phase stepper motor driver from another project. I actually got this working a while back, so I can move the tape precisely in either direction.