deskthority

Due to me being an idiot I have misplaced some parts somewhere during a disassembly years ago, only realizing now that I am missing them.

1x o-ring
2x metal stem inserts
1x flyplate

Thought I'd put this out there in the unusual case that somebody has module bits and pieces that they don't know ...

This one is a bit bizarre, and the IBM provenance is... weird.

https://live.staticflickr.com/65535/49791320148_2a799484d8_b.jpg

The back label, which was unfortunately torn or cleaned off by the seller. Thankfully, there's still a photo:

https://live.staticflickr.com/65535/49791358713 ...

Yeah, HaaTa mentioned being surprised at the measurements and repeated another set with the same results. Each graph is a set of 4 measurements as well, so you can see the consistency (or lack thereof, for some switches).

Travel shouldn't be affected by the compression - there's no more room or ...

I suspect that the reduced force is due to them being rubber banded for a few decades, and the considerable smoothness due to lack of environmental and human debris. However, the reduced travel is pretty weird and not quite explainable without comparing the two with calipers and such.

Graphs courtesy of HaaTa:

Generic beam spring from a used 5251:



The aforementioned NIB switches:

Oh wow, someone's finally tracked some of these down. I knew they existed, but I had never seen them before. Do you know how ample this stock is?

There were about a keyboard's worth, and I got them all to serve as potential replacements in a refurbishment project. Definitely wasn't cheap.

I am ...

https://farm5.staticflickr.com/4728/24371661537_a4f582fcbe_k.jpg bs1

https://farm5.staticflickr.com/4685/24371661167_9f5ad22f97_k.jpg bs2

Got a few packaged exactly like this - rubber banded, individually in small plastic baggies, stapled closed. As per the person I got these from, these are ...

Monocoque

http://www.ebay.de/itm/sehr-alte-Tastatur-Dietz-Computer-Systeme-in-Schule-verwendet-1-/202020173940


This auction ends tomorrow. I bought the other one the seller had, but I did not receive it yet and won't receive it before the auction ends. The layout and captions on the PCB on the last ...

I'd be interested in the split mini pcb as well, might give me extra incentive to fix mine :p

You may or may not have seen these via the great finds thread, so here they are:

https://farm5.staticflickr.com/4316/35931199392_b11b1c79f7_k.jpg

Time has not been kind to the keycaps. Lots of cracks on most of them, especially the LED window.

https://farm5.staticflickr.com/4317/35931197912 ...

Pace soldering station, around 1/3 of what these cost new:

http://www.ebay.com/itm/292191300534

Tips use their own heaters, so there's not much that fails in used units.

(also far better than a similarly priced hakko, say)

I haven't done it myself, but it'd be something of this sort:

http://vintageapple.org/lisainfo/Lukes_LISA_keyboard_repair.pdf

Basically pick closed cell if you want more stiffness but more durability, and open cell for the opposite. I'd probably go with the softest closed cell epdm/neoprene blend ...

Obligatory

More importantly, what switches were on the echoflow?!

This is just reminding me about that derusting which I still need to finish on mine

Another neat thing about these (I grabbed one on ebay a while back) is that the spacebar stabilizer is normal top plate mounted wire, and not the crappy underplate one that is in Fs.

cough

If you have an air compressor, I'd say Metcal MX-5250/MX-5251. Otherwise, Pace ST-75, Weller WR2000X, JBC DIS, or if on a budget, Hakko FR-300 (beware of clones/fakes/scams).

Edit: Fixed up a model number.

I've had a few of these lying around for a while now - they also come in backlight flavor where those center pads hold an LED that shines directly through a hole in the switch stem.

Horrible to type on by the way, but key feel is not exactly the ultimate purpose of these boards.

Reinventing the cnc controller from scratch, with FPGAs no less, is some seriously hardcore work!

PICs are mostly unheard of around these parts, but it's always nice to see people using something different from the typical AVR. Yeah, bootloader and lack of sample firmware are typically the biggest ...

I haven't worked with that, but it seems way more expensive than epdm/neoprene while being potentially less durable. Unless you need temperature resistance.

Ok ... 0.062" it is. I've ordered the silicone sheet, but I'll still run by Michael's and purchase a sheet of EVA foam. I've got another old Model F coming in, so this won't be my last refurb project. Having both on hand will give me a chance to compare the two materials.

FWIW, I tried 40A ...

https://www.mcmaster.com/#8647k102/=xwf9gy is what I typically use..

y11971alex wrote: I'm going to review this keyboard alongside my Topre 87-key 55g arriving next week. There would be a scientific drop test — dropped on each other from a height of 3' to check durability

fohat wrote: They will stroke his ego and he will sign anything that they put in front of him.

I can't resist:

No idea where it's from (other than Japan), but mmmm, I wants its

I've sold to b***a before, as far as I can tell he's just a serious collector with deep pockets.

And a sleazy one at that - I mentioned this before, but there was a case a while back where he/she offered a seller a significantly higher amount via a PM after losing out on an item in an already ...

al.c wrote: however, i haven't yet figured out how to connect this thing to my teensy, it has a strange 8-pin din connector:

HaaTa made some conversion code for it:

https://github.com/kiibohd/controller/t ... EpsonQX-10