deskthority

Here's my resurrected 75-key 3278 beamspring. The inside of the top case is marked with the date 10-10-79.

All of the switches were disassembled for cleaning and derusting of the switch stems (vinegar bath). The switch plate and bottom switch-housing plate were also derusted. I was originally ...

Great! I'm glad you got it to work!

Here are the patch and hex files. The firmware with debounce threshold 11 will have higher input latency but lower probability of ghosting compared to the firmware with debounce threshold 6.
See the original version here for reference.

Interesting, here's another view:

https://www.flickr.com/photos/67165432@N00/26131488066

And another abandoned terminal:

https://www.flickr.com/photos/113962676@N07/22594925473
https://www.flickr.com/photos/93172893@N06/26560686734

Maybe Linus Torvalds?

I get error at line 138 (where matrix begins) when I put joc's config into scaswr.bat

What went wrong?

scaswr.bat doesn't need to be changed - if you don't have a backup of the original scaswr.bat, you can find it in this zip file (in the *win32.zip file under the tools directory).

To program a ...

Joc your layout can be done. I need to figure out tooling costs. Are you willing to get $500 to $1,000 together for extra tooling? That would be a one time amount - the keyboards would cost the same other than the tooling.

I'd prefer the proposed layout if there's enough interest to get the ...

Ellipse: If you're still considering alternative layouts, I'm interested in an ortholinear layout like this:

http://i.imgur.com/SWt1PY7.jpg
Source: https://geekhack.org/index.php?topic=62471.msg1721540#msg1721540

Backspace, Enter, and Right Shift: 2u (all optionally splittable)
Bottom row: 1.25u ...

The prototypes and foam have been completed! They will be on their way to me this week via expedited shipping! Please note that the foam prototypes in the photos were adjusted/made with hand tools so they still have some rough areas and markings, but these will not be on the production styrofoam ...

http://bits.blogs.nytimes.com/2015/06/0 ... collector/

There was also a Star Trek version:

Hey guys,
I'm trying to make a small keyboard but I'm stuck at making the firmware. For some reason I get this error when I run make -f makefile

I've duble-triple checked all the code in the H60 folder but I don't seem to see any problem with it (considering that I mostly copy/paste-ed everyting ...

If you use Firefox, you could install this Redirector Add-on and create the following rule:

firefox_redirector_add_on.png

Include pattern: https://www.massdrop.com([^?]*)
Redirect to: https://www.massdrop.com$1?mode=guest_open
This should ensure that "?mode=guest_open" is at the end of all ...

Hmm, now I think the APL Model M that just sold did have IBM original keycaps. The Unicomp APL font is slightly different (compare the size, shape, and position of the alpha symbol):

http://i.imgur.com/9xhhN8b.jpg
Source: https://geekhack.org/index.php?topic=61878.msg1741102#msg1741102

So I ...

I noticed that the older APL sets have a slightly different font or at least the alpha symbol is flatter. Also, the one on clickykeyboards.com doesn't have bumps on the f and j keys. Although this might be the set Unicomp set out to reproduce, including using the same font.

http://www ...

http://www.ebay.com/itm/231734858065

I'm not sure if these are original IBM APL keycaps or Unicomp reproductions. The font weight of the F8-key is thicker that the rest of the function keys so that might be a clue that they're Unicomps.

Edit: Here are the picture from the auction:

apl_model_m_1 ...

Hi Joc, I'm delighted to announce success with both of my Bigfoots. Thank you very much indeed :-)

Great! Thanks for the update.

I just noticed that debounce defaults to 5 if it's not explicitly set. Also, the minimum and maximum values of debounce are 1 and 7, respectively. The source code for ...

Awesome. Thanks joc! So now we finally know the pre beam spring IBM keyboard mechanism - probably also used on the 1130 and 2250. I would have thought the terminals used something different from the keypunch.

I've seen spacebars with "Space" written on them before, but never something so ...

It may not be. Note the "converted" text. IBM could be right confusing with this stuff!

Anyone ever seen an M122 with a metal connector on the cable? That's a classic sign. Metal bottom being the best one.

Hmm, I noticed the "converted" text. The "Product of CEL TECH" text is also interesting ...

model f 122 at 60 dollaridoos
http://www.ebay.com/itm/ONE-MINT-IBM-1389260-MODEL-H-KEYBOARD-2-AVAILABLE-H803/231736038600?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3Dbdd989742ded4453a5c0de01f1dcefe3%26pid%3D100005%26rk%3D2%26rkt ...

Scottex wrote: It worked great, thank you so much

Awesome! I'm glad it worked out for you.

Thanks for that info joc! I found this also:

http://ed-thelen.org/comp-hist/IBM-ProdAnn/2848.pdf

http://www.columbia.edu/cu/computinghistory/2260.html

http://www.textfiles.com/bitsavers/pdf/ibm/2260/C20-1688-1_2260_Operator_Manual_Jul68.pdf

Sure, no problem. It was a lucky find. When I Google ...

I'd love to find out what switch is in that thing. It came out in 1964, so it can't be beam spring.

The IBM 2260 keyboard was an electromechanical system similar to the IBM 029 keyboard . See chapter 2, page 17 (physical page 61) here .

Here's a screenshot of the alphanumeric and numeric ...

:o It seems like the second version of the IBM PCjr keyboard might have been the first IBM keyboard with bumps on the f and j keys. This announcement letter states that these keyboards were to start shipping by the end of November 1984 (pre Model M days). The PCjr was competing with the Apple IIc at ...

These look interesting: http://www.ebay.com/itm/381451691534 I couldn't find much information about them.

Soarer posted some snippets of his debounce implementation here and here that provide some insights into what the debounce setting actually does.

When debounce is set to 5, the controller looks at the last six scan readings and sends a key-down event if there were five highs followed by one low ...

I just did the the wiring with the arduino on win8.1 64 and most of the keys work great.
I am having trouble with all of the keys in the bottom row and n(the two arrows on the left,error reset,spacebar,n,enterrecadv,0 and ,). They register double :S.
I was thinking it might be a too damaged foam ...

Here's a video that shows the internals of the keyboard and how it works: https://www.youtube.com/watch?v=FkM_FRXNXqU

A minimalistic logo design could be an ellipse with a major and minor radius of 77 and 62, respectively, like this: http://www.wolframalpha.com/input/?i=%2 ... %B2%29%3D1

Here are some photos of an IBM 3290-1 keypad (possibly Model F?). The keyboard being used in the first photo looks like an F122 at first glance but when you look closer you'll see that it's actually an F104 (unsaver) and separate keypad. Here's the IBM announcement that mentions the keypad: http ...