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by snacksthecat
03 Aug 2018, 21:47
Forum: Workshop
Topic: NEC PC-8801 (Davey's first blue alps experience)
Replies: 47
Views: 5989

As promised, here are the details on how to build a converter for this keyboard. I'm a novice when it comes to arduino/teensy programming but everything seems to work. It even supports NKRO! I'll try to make the instructions as clear as possible but please do feel free to ask a question. The keymap ...
by snacksthecat
03 Aug 2018, 19:36
Forum: Workshop
Topic: Photogrammetry, 3D modeling, and design (building a custom case)
Replies: 5
Views: 773

Thanks for the info guys.

Here is the result of my experiments with photogrammetry https://skfb.ly/6AH6z
by snacksthecat
03 Aug 2018, 15:38
Forum: Gallery
Topic: Cherry B80-16AC
Replies: 13
Views: 1429

I have a very similar keyboard as well! I'll post some photos when I get home tonight. I am curious what switch is used on that keyboard you have. :D https://i.imgur.com/7GWacRD.jpg https://i.imgur.com/CYSQPdg.jpg https://i.imgur.com/i6r6Wku.jpg https://i.imgur.com/QzQspnz.jpg https://i.imgur.com/L...
by snacksthecat
03 Aug 2018, 01:46
Forum: Workshop
Topic: NEC PC-8801 (Davey's first blue alps experience)
Replies: 47
Views: 5989

Update: I was able to get it converted last night. If there's any interest, I can post the full details and source code here.
by snacksthecat
03 Aug 2018, 00:04
Forum: Gallery
Topic: Cherry B80-16AC
Replies: 13
Views: 1429

Laser wrote:
snacksthecat wrote: BTW this is the third time this week I've hears ADDS mentioned and I still have no idea what it is. Is it just a brand / type of terminal?
The link to the Wiki is right there at the beginning of the 1st post :)
My most sincere apologies
by snacksthecat
02 Aug 2018, 23:48
Forum: Gallery
Topic: Cherry B80-16AC
Replies: 13
Views: 1429

I have a very similar keyboard as well! I'll post some photos when I get home tonight. BTW this is the third time this week I've hears ADDS mentioned and I still have no idea what it is. Is it just a brand / type of terminal? I haven't checked to see what protocol (if any) my keyboard is. It has so ...
by snacksthecat
02 Aug 2018, 02:05
Forum: Workshop
Topic: NEC PC-8801 (Davey's first blue alps experience)
Replies: 47
Views: 5989

Here's what the patters are looking like. My keyboard doesn't have the bottom two rows of keys but you could probably figure them out easily through the process of elimination. Everything matched up to that memory map exactly with a couple of exceptions where a keypress didn't generate any output. I...
by snacksthecat
02 Aug 2018, 00:07
Forum: Workshop
Topic: NEC PC-8801 (Davey's first blue alps experience)
Replies: 47
Views: 5989

I confirmed with a quick and dirty arduino sketch that this is most likely how the keyboard reading works. My sketch pulls one of the signal pins low then reads each of the remaining 8 pins. If you press a key on the keyboard that's in the row corresponding to the signal pin that was pulled low, the...
by snacksthecat
31 Jul 2018, 23:32
Forum: Workshop
Topic: NEC PC-8801 (Davey's first blue alps experience)
Replies: 47
Views: 5989

I've been thinking about this a lot and I may finally have my head around it. I think it might help me cement that further if I write it down. Here's how I currently think the keyboard reading works: The computer (or microcontroller) activates some pattern of the first 4 pins to query a row. The IC ...
by snacksthecat
29 Jul 2018, 21:08
Forum: For sale
Topic: Rubber Domes...
Replies: 6
Views: 1010

Bump
by snacksthecat
29 Jul 2018, 04:10
Forum: Workshop
Topic: Photogrammetry, 3D modeling, and design (building a custom case)
Replies: 5
Views: 773

I thought this message was funny

Image

And this question form my girlfriend killed me :lol:
Why does it look like pudding and mold???
Image
by snacksthecat
29 Jul 2018, 01:56
Forum: Workshop
Topic: Photogrammetry, 3D modeling, and design (building a custom case)
Replies: 5
Views: 773

Photogrammetry, 3D modeling, and design (building a custom case)

I was talking to green-squid about the possibilities of building a keyboard from the guts of an IBM Wheelwriter. It would be ideal if someone had already designed a case that could be 3d printed or cut from layers of acrylic. But alas, it seems no one had done such a(n) (obscure) thing (yet). My nex...
by snacksthecat
28 Jul 2018, 21:54
Forum: Keyboards
Topic: Do BOX switches stretch PBT and break ABS keycaps?
Replies: 135
Views: 13492

What about us lot who already bought this switch, what are we to do? A purpose-built MX-stem shaving tool would be an ideal solution: You would push your MX switch into this device and it would come out shaved to known, safe, keycap-friendly dimensions. There are similar devices for other purposes:...
by snacksthecat
28 Jul 2018, 19:08
Forum: Keyboards
Topic: Do BOX switches stretch PBT and break ABS keycaps?
Replies: 135
Views: 13492

A lot of science of good information. But leaves me wondering; where is the good old fashion outrage?
by snacksthecat
28 Jul 2018, 00:47
Forum: Workshop
Topic: NEC PC-8801 (Davey's first blue alps experience)
Replies: 47
Views: 5989

Please help! I want to be a dignified keyboard conductor and have a mini virtual ballerina like this guy

Image
by snacksthecat
27 Jul 2018, 04:06
Forum: Workshop
Topic: NEC PC-8801 (Davey's first blue alps experience)
Replies: 47
Views: 5989

Here's my lame attempt at mapping things out, in terms of what connects to what. https://i.imgur.com/rDQqL2y.jpg Certainly seems to match the explanation that I was reading on that one site What this means in practice is that the PC88 itself does the key reading. The keyboard connector has 13 pins (...
by snacksthecat
27 Jul 2018, 01:32
Forum: Off-topic
Topic: Retr0bright: is there such thing as *too* bright
Replies: 2
Views: 644

Retr0bright: is there such thing as *too* bright

I've been mostly happy with my experiences using peroxide to whiten keyboards. But I do see a lot of posts where people have used retr0bright and the keyboard turns out ghost white. Is this really restoring the original color? Wodan's excellent post about using peroxide and heat really highlighted t...
by snacksthecat
24 Jul 2018, 03:55
Forum: Workshop
Topic: TeleVideo Model TS-802
Replies: 13
Views: 1295

Edit: There doesn't seem to be a release code which is interesting. Yeah, I think I'm going to have to make a compromise somewhere. I got a quick and dirty arduino sketch working but came to the conclusion that I have to choose between either: a) Make the initial keypress return a make and break au...
by snacksthecat
23 Jul 2018, 14:10
Forum: Keyboards
Topic: Model F has lost its little mind (sending spurious keystrokes), why?
Replies: 15
Views: 824

Eeek, I may be spreading some misinformation. Edited post accordingly. In any case, I know my issue has to do (in some way) to this since it is working now. Curious about what the right way to hook this up is. So I guess what I've learned is that circuit ground is different from earth ground. This p...
by snacksthecat
22 Jul 2018, 18:17
Forum: Workshop
Topic: TeleVideo Model TS-802
Replies: 13
Views: 1295

I'm trying to write a simple arduino sketch but I'm not sure how to approach it. What I'd like to detect is when a key is pressed vs when a key is held. Here's the behavior of the keyboard: When you press a key on the keyboard, the keyboard sends 0x00 followed by the ascii value of the character. If...
by snacksthecat
22 Jul 2018, 03:44
Forum: Keyboards
Topic: Model F has lost its little mind (sending spurious keystrokes), why?
Replies: 15
Views: 824

W̶h̶a̶t̶ ̶t̶u̶r̶n̶e̶d̶ ̶o̶u̶t̶ ̶t̶o̶ ̶b̶e̶ ̶t̶h̶e̶ ̶i̶s̶s̶u̶e̶ ̶w̶i̶t̶h̶ ̶m̶y̶ ̶v̶o̶l̶t̶a̶g̶e̶ ̶p̶r̶o̶b̶l̶e̶m̶ ̶i̶s̶ ̶t̶h̶a̶t̶ ̶t̶h̶e̶ ̶d̶i̶n̶ ̶5̶ ̶c̶o̶n̶n̶e̶c̶t̶o̶r̶ ̶I̶ ̶w̶a̶s̶ ̶u̶s̶i̶n̶g̶ ̶d̶i̶d̶n̶'̶t̶ ̶h̶a̶v̶e̶ ̶t̶h̶e̶ ̶s̶l̶e̶e̶v̶e̶ ̶c̶o̶n̶n̶e̶c̶t̶e̶d̶ ̶t̶o̶ ̶G̶n̶d̶ ̶o̶n̶ ̶t̶h̶e̶ ̶m̶i̶c̶r̶o̶c̶o̶...
by snacksthecat
22 Jul 2018, 02:46
Forum: Workshop
Topic: Sony NEWS keyboard converter
Replies: 5
Views: 995

Got my Xerox Docutech keyboard working with this converter and a modified keymap. Thank you hasu!

workshop-f7/xerox-docutech-keyboard-cle ... ml#p419577
by snacksthecat
22 Jul 2018, 02:45
Forum: Workshop
Topic: Xerox Docutech Keyboard - cleanup and (hopefully) conversion
Replies: 32
Views: 4644

Okay boys, we did it! Ka8-mRySM7g Here's the keymap.c (again, this is for hasu's Sony NEWS keyboard converter) /* Copyright 2012 Jun Wako <wakojun@gmail.com> This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the ...
by snacksthecat
21 Jul 2018, 04:58
Forum: Workshop
Topic: TeleVideo Model TS-802
Replies: 13
Views: 1295

So I came into another TeleVideo keyboard and spent some timetoday trying to learn more about the signalling. I'll do my best to summarize what I've learned so far. ASCII So far it seems like the keyboard outputs ASCII codes for each exact character (e.g. 'a' vs 'A'). The signalling is 9600 baud, 8 ...
by snacksthecat
21 Jul 2018, 02:58
Forum: Workshop
Topic: IBM Model F XT acting strange
Replies: 10
Views: 986

Total noob mistake. I was using a Soarer's converter that didn't have the din sleeve wired to Gnd.
by snacksthecat
21 Jul 2018, 02:55
Forum: Workshop
Topic: Xerox Docutech Keyboard - cleanup and (hopefully) conversion
Replies: 32
Views: 4644

Working on cleaning up the rest of the board. I decided that I'd like to use it for a week or two then ultrasonic the switches (and fix up any keymap things). That way I can compare what cleaning the switches really did.
by snacksthecat
20 Jul 2018, 21:53
Forum: Workshop
Topic: XT/AT/PS2/Terminal to USB Converter with NKRO
Replies: 793
Views: 165234

I'm working on remapping a keyboard that is outputting some mixed up key presses. For the most part this is very straight forward! I'm just wondering how the syntax would be in my config file if I need to remap a key that outputs multiple keypresses. Is this possible to remap? For instance, when I p...
by snacksthecat
20 Jul 2018, 21:31
Forum: Keyboards
Topic: Model F has lost its little mind (sending spurious keystrokes), why?
Replies: 15
Views: 824

Something similar was happening to me and it turned out to be a voltage problem. Do you have a multimeter? If so, check the voltage on the board to make sure it's adequately high. Mine was around 4.2V when I experienced the problem. Sometimes it can be a simple fix like making sure ground is properl...
by snacksthecat
20 Jul 2018, 03:19
Forum: Workshop
Topic: Xerox Docutech Keyboard - cleanup and (hopefully) conversion
Replies: 32
Views: 4644

Here's all the scancodes: ,--------------------. ,-------------------. ,-----------. | 63| 64| 65| 66 | | 67| 68| 69| 6A| | 6B| 6C| `--------------------' `-------------------' `-----------' ,--------. ,----------------------------------------------------------. ,---------------. | 54| 55| | 04| 05|...
by snacksthecat
20 Jul 2018, 02:21
Forum: For sale
Topic: Rubber Domes...
Replies: 6
Views: 1010

Rubber Domes...

...or as my girlfriend thinks they're called; "airsoft" keyboards I'm happy to install an internal usb converter for any one of these for $6 Memorex 122 key keyboards (x3) - $10/each or $20 for all three LK8000M POS keyboard - $4 Apple M0487 / Keyboard II (missing top of case) - $0 https://i.imgur.c...

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