Search found 627 matches

by PlacaFromHell
Yesterday, 19:46
Forum: Keyboards
Topic: IDENTIFY THE KEYSWITCH thread
Replies: 210
Views: 24040

Re: IDENTIFY THE KEYSWITCH thread

Linear switches in a keyboard that was found lying outside a textile factory. The keyboard appears to have been part of a computerised weaving machine, and I can't find anything about the switches that it uses. Has anyone seen them before? They've got a pretty short travel, are fairly smooth, and t...
by PlacaFromHell
02 Aug 2020, 01:47
Forum: Keyboards
Topic: Richard Hunter Harris' switch prototypes
Replies: 2
Views: 235

Richard Hunter Harris' switch prototypes

Hello guys. I developed an interest in obscure IBM switches a while ago and today I was able to find some wicked stuff from the same dude who designed both beamspring switches and buckling spring switches, behold: High profile buckling spring prototype: https://patents.google.com/patent/US3699296A/e...
by PlacaFromHell
02 Aug 2020, 01:04
Forum: Reviews
Topic: IBM 4978 "Beamship" keyboard review (Beamsprings)
Replies: 20
Views: 780

Re: IBM 4978 "Beamship" keyboard review (Beamsprings)

I wonder if models C through E were botched attempts at cheaper variants til they landed on the buckling spring. Maybe foam an foil? poor performing leaf spring? Who knows what else. Perhaps the switches from the PC Jr were derived from one of these failed attempts. Behold this thing patented a yea...
by PlacaFromHell
16 Jul 2020, 01:03
Forum: Keyboards
Topic: Need help with replacing cable in IMC XT/AT Keyboard
Replies: 10
Views: 527

Re: Need help with replacing cable in IMC XT/AT Keyboard

Just to confirm, take this: https://i.ebayimg.com/images/g/VT8AAOSw4xxbQuZU/s-l1600.jpg We're right about VCC and GND. is not so odd to read something between VCC and the rest of the pins if you have certain components in the middle, but not the most normal thing. If you want to check the integrity ...
by PlacaFromHell
15 Jul 2020, 23:06
Forum: Keyboards
Topic: Need help with replacing cable in IMC XT/AT Keyboard
Replies: 10
Views: 527

Re: Need help with replacing cable in IMC XT/AT Keyboard

Hello. If you can provide info about the keyboard model we might be able to find more information. Anyways, I will try to give you some help. At first, always the bigger and more robust trace in almost any circuit is GND, from what I see in your picture you should follow this trace: https://media.di...
by PlacaFromHell
15 Jul 2020, 08:39
Forum: Reviews
Topic: SGI "Granite" 9500900 review (Alps SKCM White Dampened)
Replies: 5
Views: 439

Re: SGI "Granite" 9500900 review (Alps SKCM White Dampened)

I was able to retrobrite them in 10% hydrogen peroxide and they look much, much better. No need to paint. Never paint. ;) Yeah, but how long does the Retrobrite last after leaching out the old colour? Wouldn't it return back in time because it is not painted or coloured, only removal of the stain t...
by PlacaFromHell
15 Jul 2020, 00:34
Forum: Keyboards
Topic: Model F Spring Buckling Issue
Replies: 8
Views: 357

Re: Model F Spring Buckling Issue

I'm happy it worked. The same happened with my model F XT. I guess the springs just get old or fatigued and start failing. Unfortunately I'm not even close of your city :( We'll see latter.
by PlacaFromHell
14 Jul 2020, 22:56
Forum: Keyboards
Topic: Model F Spring Buckling Issue
Replies: 8
Views: 357

Re: Model F Spring Buckling Issue

I've tried swapping keycaps, no change, same switch has the issue. I have taken it apart to try and resolve this issue, but I didn't think of changing the the location of the barrels. Being with how hard it was to get back together I don't know if I'm ready to do that just yet. Here's a video of th...
by PlacaFromHell
08 Jul 2020, 09:26
Forum: Workshop
Topic: Designing an injection machine for keyboard science
Replies: 5
Views: 583

Re: Designing an injection machine for keyboard science

DiodeHead wrote:
08 Jul 2020, 08:50
I hope it helps or at least inspires.
That's so nice, but looks so expensive too. I would have to sell a kidney to pay a Nema 34 :D
by PlacaFromHell
08 Jul 2020, 09:02
Forum: Workshop
Topic: Designing an injection machine for keyboard science
Replies: 5
Views: 583

Re: Designing an injection machine for keyboard science

Hi, Rambling thoughts. For the press. Maybe there is some off the shelf cylinder part like, car brakes, general purpose hydraulic cylinder or something that is metal with good tolerances for the pressing part. Not sure if it sold and obviously expensive but I remember this device. https://www.techk...
by PlacaFromHell
07 Jul 2020, 10:15
Forum: Keyboards
Topic: Monterey K2AX - Matroshka of Surprises
Replies: 2
Views: 344

Re: Monterey K2AX - Matroshka of Surprises

I don't have any keyboard with that switches, but I always suspected that pre problem is the size itself, they are so tiny that when you press a key just a tiny bit off-center the slider may get stuck and can't mechanically convert the actual diagonal force into linear. Just imagine that you have a ...
by PlacaFromHell
07 Jul 2020, 04:32
Forum: Workshop
Topic: Designing an injection machine for keyboard science
Replies: 5
Views: 583

Designing an injection machine for keyboard science

Hello guys. As some of you know I'm working in a very complex keyboard project, where I'm forced to work with custom parts. For a finished product 3D printing or CNC is not even an option, so I'm trying to make my way into injection moulding, but as you may know, that's EXPENSIVE AS FUCK. So far I d...
by PlacaFromHell
03 Jul 2020, 21:48
Forum: Group buys
Topic: [IC] Funny Adapters! Alps to Cherry MX adapters 08/01/2020 Update
Replies: 6
Views: 510

Re: [IC] Funny Adapters! Alps to Cherry MX adapters

Welcome to DT! You did an awesome work with the adapters. I'm sure that at least you can do a GB. The AEK is not the best candidate as the keycaps are stepped by the stems and not by the body itself, so I think I'll stay out. The custom Alps market is still very promising for such a thing like this....
by PlacaFromHell
28 Jun 2020, 05:07
Forum: Reviews
Topic: Xiaomi Yuemi MK03C keyboard review (TTC MT hybrid clickbar switch)
Replies: 4
Views: 921

Re: Xiaomi Yuemi MK03C keyboard review (TTC MT hybrid clickbar switch)

It's appropriate! Earlier this year, spyware had been found in a web-browser pre-installed on Xiaomi's cell phones. I wonder what's the difference with Android, Google, Windows, etc, sending very convenient announces of something I was talking about. Yeah, it sucks, but is not that uncommon in the ...
by PlacaFromHell
27 Jun 2020, 00:30
Forum: Workshop
Topic: Low profile Beamspring project
Replies: 39
Views: 6993

Re: Low profile Beamspring project

Any update?
by PlacaFromHell
22 Jun 2020, 10:43
Forum: For sale
Topic: [UK] WTS IBM 4890 "F127" keyboard
Replies: 11
Views: 1535

Re: [UK] WTS IBM 4890 "F127" keyboard

Weird. Theoretically you could mod any 122 into a 127 no? It actually has a different barrel plate! I used to own one. Mine has the same barrel plate, I'm using a extended numpad right now. https://media.discordapp.net/attachments/555514970033618958/569234739496484914/IMG_20190420_150221.jpg?width=...
by PlacaFromHell
21 Jun 2020, 08:11
Forum: Keyboards
Topic: Do I need to screw mod my Model M?
Replies: 13
Views: 1041

Re: Do I need to screw mod my Model M?

Yeah, I've seen some people get rid of the mat entirely, which probably is just as good if not better than the thin latex mat. Though I have seen some concerns insofar as to whether or not it reduces the lifespan of the membrane. I'm not sure how valid those concerns are. As far as where you can ge...
by PlacaFromHell
21 Jun 2020, 05:44
Forum: Keyboards
Topic: Do I need to screw mod my Model M?
Replies: 13
Views: 1041

Re: Do I need to screw mod my Model M?

It's a very simple process, even someone as clumsy as me was able to do one with the encouragement of the users here. I think the best part of doing a bolt mod -- aside from making the board more serviceable -- is the opportunity to replace the thick rubber mat with a thin latex mat from Unicomp, a...
by PlacaFromHell
16 Jun 2020, 06:13
Forum: Gallery
Topic: NMB RT101+
Replies: 9
Views: 1007

Re: NMB RT101+

jessesevorg wrote:
16 Jun 2020, 05:57
Image
Ohhh boy, that's THICC.
by PlacaFromHell
16 Jun 2020, 00:44
Forum: Keyboards
Topic: OG M0110 + White Alps?
Replies: 17
Views: 1104

Re: OG M0110 + White Alps?

You can just cut the borders of the plate (where is meant to be mounted originally) and and some nuts and bolts in between, looking for an specific place where your PCB has no traces. Try to avoid buying an entire custom plate, is the most expensive thing in most keyboard builds and prone to errors...
by PlacaFromHell
15 Jun 2020, 07:31
Forum: Keyboards
Topic: OG M0110 + White Alps?
Replies: 17
Views: 1104

Re: OG M0110 + White Alps?

You can just cut the borders of the plate (where is meant to be mounted originally) and and some nuts and bolts in between, looking for an specific place where your PCB has no traces. Try to avoid buying an entire custom plate, is the most expensive thing in most keyboard builds and prone to errors.
by PlacaFromHell
14 Jun 2020, 23:10
Forum: Keyboards
Topic: OG M0110 + White Alps?
Replies: 17
Views: 1104

Re: OG M0110 + White Alps?

Why not just remove the borders? What do you plan to do with the keycaps? What borders do you mean? Yes one way I can make this project work is to make the opening of the top case larger so it fits a regular 60% pcb. Should I just sand it down? Not sure how to work with plastic. What's exactly the ...
by PlacaFromHell
14 Jun 2020, 08:01
Forum: Keyboards
Topic: Fact checking: Are Alps SKCC and SKCM/SKCL springs interchangeable?
Replies: 3
Views: 353

Re: Fact checking: Are Alps SKCC and SKCM/SKCL springs interchangeable?

Thanks. I just remembered a friend has this thing:

Image

Will be funny to play around with some springs.
by PlacaFromHell
14 Jun 2020, 08:01
Forum: Keyboards
Topic: OG M0110 + White Alps?
Replies: 17
Views: 1104

Re: OG M0110 + White Alps?

Why not just remove the borders? What do you plan to do with the keycaps?
by PlacaFromHell
13 Jun 2020, 09:00
Forum: Keyboards
Topic: Fact checking: Are Alps SKCC and SKCM/SKCL springs interchangeable?
Replies: 3
Views: 353

Fact checking: Are Alps SKCC and SKCM/SKCL springs interchangeable?

So, are both interchangeable? Is there any source of Alps springs? My M110A is a great keyboard but the switches are heavy, I mean, HEAVY. They're in fact Mitsumi made, but should work too.
by PlacaFromHell
13 Jun 2020, 07:46
Forum: Keyboards
Topic: OG M0110 + White Alps?
Replies: 17
Views: 1104

Re: OG M0110 + White Alps?

I think (can't confirm) the footprint may not be exactly the same. You can for sure use the same PCB as the pin management is the same. Did you considered swapping the springs instead? I know they are heavy, but they feel quite nice.
by PlacaFromHell
10 Jun 2020, 06:39
Forum: Keyboards
Topic: IDENTIFY THE KEYBOARD thread
Replies: 4277
Views: 344125

Re: IDENTIFY THE KEYBOARD thread

This keyboard was found in an industrial setting (as evidenced by its cleanliness). My girlfriend saw it and instantly knew I'd be interested in it, but she wasn't allowed to touch or pull caps. I thought Unikey/Chicony initially, but the AEKII-like profile, relegendable caps, and the position of t...
by PlacaFromHell
05 Jun 2020, 23:40
Forum: Keyboards
Topic: Need help with converting Philips P2812
Replies: 9
Views: 640

Re: Need help with converting Philips P2812

I have the exact same keyboard except is rebranded by an unknown company. It worked well with a Soarer for almost a year and then died. Quite sad, the switches are great but the quality of the case is awful.

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