@tubetime It's nearly 40Y since I last used a pen plotter (possibly HP), and those did indeed seem not to be problems by then...

@tubetime as someone who has put a lot of hours into programmatically converting Inkscape-generated vector art into other formats, sometimes I can't tell whether Inkscape is underdeveloped or very opinionated. I love it. It's an amazing piece of software for $0. Unfortunately, that also means everyone uses it for everything, and it's not great at everything.

@tubetime For that sort of work you probably want to use something like QCAD (or maybe FreeCAD) and not Inkscape.

Inkscape is really a tool for vector art and not CAD. So no wonder those things don't work or work poorly - they are rarely an issue for typical Inkscape uses.

shork!

@slyka Super impressive (but slightly spooky images on the green screen).

@slyka Magic!

@__michaelg ah yes audio stuff

@__michaelg dont put that evil on me ricky-bobby

@__michaelg

This makes my brain hurt.

@tubetime 💯

@tubetime
The three-bit width aside, are the functional and electrical specifications comparable to industry-standard 256Kx4 DRAMs?

@tubetime ooo pretty!

@tubetime wow thats an expensive wet tantalum right? Can we see all the insides?

@tubetime
I do like a good exploded view.

@tubetime now it's caplescitor

@tubetime @foone Who is this „General Failure“ and why is he reading my disk?

@tubetime Who is General Failure and why is he reading your drive C:?

@tubetime
Might be the cable and it's connections have rusted, if the disk can't be read. Don't remember that exact message.

looks like it might be the power switch. I'm expecting less resistance than this.

managed to desolder it. the extra tape is to stabilize it, because...

@tubetime Wow, what could cause that massive crack? Shock? Extreme temperatures?

@tubetime 256k

I'm a software person so I might be entirely wrong, but how could this be a RAM chip with just 16 pins? If it's 256 kbit like others are saying, you'd need 15 address lines, 8 data lines, power, ground, chip select, and read/write signals. So at least 27 pins. Unless it uses some kind of serial protocol, but is that even a thing with RAM chips?

@tubetime well, it’s not a dirty word (or, indeed, a dirty bird).

Sorry, I always think of that song every time I see the word eagle. I’ll show myself out.

@kenshirriff crumbs @Isolectra

@kenshirriff When it doesn't work, in my plane 😜

https://youtu.be/c03inuI3_kc

@kenshirriff

f-4 was an interesting plane.

when i was in the air force, pilots used to joke that the f-4 was living proof of the rule of aerodynamics that given sufficient thrust, even a brick could fly. downside was that when the f-4 lost thrust, it reverted to brick.

but they had a long and pretty solid life span in service.

@tubetime that never happens!

@tubetime

You can't just replace it you need an exorcism.

@tubetime @daedalus

Well, good news is they/it left you most of the stripes...🤣

@bitsavers They look too narrow, too. I'm getting strong "soviet bloc" package vibes from these. CEMI and TESLA had those long divots. I reckon these are re-marked parts. '65 seems too early.

@bitsavers I have no relevant knowledge knowledge but I wonder if this could be from a time when prices where high and there was enough margin to pay the higher manufacturing cost. The 3D logo would flaunt the technical advances and make them harder to clone.

here's the original battery.

@tubetime wow!!!!

@tubetime had it emulate a 486?

@tubetime
Is this not the very definition of virtuoso?

Wow.

Using a 2.5MB yes MB Linux kernel. I didn't think you could config Linux down that small.

Wow.

@tubetime This is horrifying. 🤢 In eng school we once had a guest lecture from a crewed submersible design engineer. I forget the exact numbers, but by convention they would overdesign metal hulls by e.g. 10x; but for any transparent ports they would overdesign them by e.g. 20x because they knew that much less about the material behavior...

@tubetime
This thread has strong vibes of "let's build a submarine in our backyard" to it.
(I have only an AA in engineering, but I'm sitting here going "WTaF" at just about everything. And that AA did include properties of materials, a *lab class*.)

@tubetime
Check this out. You can clearly see the hatch just laying there like it popped right off the sub. Who could have guessed?

https://youtu.be/eEThkm0Dih8

i've unfolded the cells now so they lay flat. i have to weld the two positive terminals (on the red wire, somewhat out of focus). the other little thing hanging free is the thermistor.

first, i took it apart and documented the process here on iFixit: https://www.ifixit.com/Teardown/IBM+Thinkpad+700C+Battery+Pack+Teardown/176472

you can read through that if you want and come back. but basically that tells you how to remove the lid without making a huge mess.

@tubetime <scroll scroll scroll>

YOU DIDN'T SHOW US YOUR BATTERY WELDER!!!! 😭