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242 posts total
Tube❄️Time

so apparently you can increase the capacitance of an electrolytic capacitor by putting it in a centrifuge? weird!

youtube.com/watch?v=Xa36SlyhSw

RealGene ☣️

@tubetime
It's pretty clear (and he acknowledges near the end) that any effect is probably due to mechanical deformation.

It would have been simpler just to measure continuously while crushing one in a vice.

Brian Danger Hicks

@tubetime Getting out of the ARM business once again. I wonder how long it will last this time.

Paula Maddox

@tubetime interesting, though I don’t get why you’d buy a company and then put it out on its own.

Anthony, of course

@tubetime spin off the FPGA unit? Spin off? Like in a Cyclone?

I'll get my coat 🧥

Tube❄️Time

this chip seems to have been sanded down -- you can see the marks

Tube❄️Time

one of the pins fell off so I carved away part of the encapsulation and soldered it back on

Mathaetaes

@tubetime That power supply definitely looks like stick of C-4 that some hero cop (recently recalled from retirement to save the day) is trying to disarm in a movie from ~the early 00s.

Just sayin'

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Sebastian

@tubetime @awlnx The captain also wrote a book about this flight that is a very interesting read: play.google.com/store/books/de

Jamie McCarthy

@tubetime Thanks for sharing this — I had to read it in two sessions (with a commercial jet flight between!) but this was a great read

Eric Carroll

@tubetime
Oooh. I sense a new episode of MayDay coming.

Great show, the audience gets to play Guess The Failure Mode from the comfort of home.

"I can Guess The Failure Mode in 5 minutes Alec! "

en.m.wikipedia.org/wiki/Mayday

Tube❄️Time

bookmark this: connectorbook.com/

it is not just a book--there is an online utility that can help you identify mystery connectors!

Tube❄️Time

how to design user friendly systems in No Time

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Dantali0n :arch: :i3:

@tubetime Am I the only one concerned with that it appears a GIF viewer is used as interface to a SCADA system?

Multi Purr Puss :verified:

@tubetime it's got thicc scroll bars though - very user friendly to be able to see the current position in the document.

Frottier

@tubetime to be fair it *does* look like someone spent exactly NO TIME on the design...
😅

Tube❄️Time

i've reverse engineered a printed circuit board using ARTWORK FROM AN ALBUM COVER. 😲 not on my list for 2023!!

Tube❄️Time

i'm trying to install OS/2 2.0 on my Thinkpad 700C (16 floppy disks, wow) but i'm running into this weird error message. anyone recognize it?

The system detected an internal processing
error at location 0f00:76a1
60000, 6000

048600b4
Internal revision 6.307, 92/03/01

The system is stopped. Record the location number
of the error and contact your service representative.
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Mark J Koch ✅

@tubetime Allegro (and Cadence? Schematic capture) was my first tool for making professional PCBs. It was what Sun used for hardware design. Eventually learned Eagle so that we could do more in our department "under the radar". Our Allegro "tape out" had to go through a PCB department and generally had long delays whenever hotter projects had priority.

rhempel

@tubetime I can still remember laying out boards at 2x or 4x scale with semi transparent red and blue tape. Yes, really.

I should get a colonoscopy - oh I forgot I already did.

Tube❄️Time

helping you gun down your competition 😬

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Simon Frankau

@tubetime Impressive that it can manage to be both wildly distasteful and anti-competitive.

MarkAtMicrochip

@tubetime I’m fascinated by some of the specifics in this ad. They had just moved to AZ (from NY). The logo (there’s an extra notch in the m) and the device they’re advertising doesn’t exist. To my knowledge, this is pre-PIC16.

UpLateGeek

@tubetime they may actually be serious, the logo does kind-of look like two pistols.

Tube❄️Time

hey, quick reminder that i'm also on Bluesky. @tubetime.bsky.social. should i migrate over? i don't use twitter anymore, and mastodon doesn't have many non-techy folks.

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scrottie (he/him/they)

@tubetime What non-techy things are you interested in? And no, a site run by a good friend of and supporter of Elon that Elon is invested in really isn't it. It might be ok now but how many corporate communities in the last couple of years have absolutely turned on their residents? Etsy, Bandcamp? The implosion of Tumblr? And also I would miss you.

myrmepropagandist

@tubetime

IDK I've found a lot of non tech people here. It's important to follow a lot of people here to get a real sense of what's going on.

But, yeah, what sort of things are you looking for?

GrafxGear

@tubetime only use this for the few who haven't set up shop on blue Sky. but I have abandoned mastodon for the most part.

Tube❄️Time

hmm what do we have here? stack failure?

Dave Spector

@tubetime I have one of those from the 6600 at NYU. It was a very cool machine.

PTEC3D

@tubetime Did you see how some memory modules were constructed? I would hate to have to deal with these rope memory modules in any way, shape, or form...
-- youtube.com/watch?v=hckwxq8rnr --

That said I had an old mini-mainframe things 30 years back that actually had a few cards of plane ferrite core memory and it used to dim the lights in my place when it turned on, and then again when loading/reading the memory. Quite surreal...

Tube❄️Time

took this hard drive out of my IBM PS/2 to measure the edge connector and noticed I hadn't cleaned up all the corrosion when I recapped it a while back. oops

Tube❄️Time

yeah looks like a broken trace. that might explain why the drive doesn't work half the time

vxo

@tubetime what was this oddball interface? I remember seeing a drive with it exactly once - most IBM PS/2's I've laid hands on had a scsi card and drives

Tube❄️Time

An historic hangar burns down 😥
I've been inside an identical one--they're made mostly of wood.

mastodon.nz/@labradorgirl/1113

(photo from Wikipedia)

Tube❄️Time

this is the same type of hangar at Moffett Field. the hard hat was required because pieces of wood randomly fall down from the roof (!)

Cvwarren

@tubetime I can see the two hangers from my neighborhood, regularly shop near them (as in, drive by about 100 meters away from the still-standing end) —and they are magnificent. I don’t believe either of them had been in use for a long time, and I’m not surprised it reached the stage of dereliction and incongruity where this was nearly inevitable. I’m sure it’s not just Southern California, but large historic structures that stand in the way of some other land use have a habit of burning…

Tube❄️Time

solving somebody else's problem, circa 1991

Sir John Falstaff

@tubetime
That capacitor seems like something that should just be included as a matter of course.

Simon Frankau

@tubetime Nice to see it clearly documented with the reason it's present!

Tube❄️Time

I'm doing a more thorough reverse engineering of the power PCB from the Thinkpad 700 series. lots of work so far and there are still more parts to remove on the other side of the board!

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Tube❄️Time

that's both sides. phew, lots of work! the next step is to photograph the top and bottom sides of the PCB. I really ought to get a scanner. 😅

DELETED

@tubetime i should do this for some Sony Handycams.

Sandbender

@tubetime
That feeling when the only tape you have around is kapton.

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