Anything to do with this board?

hwood34

12 Jul 2014, 21:55

Is there anything I can do with this board, or is it forever destined to be looker? I have two, so I'm not afraid to mess up one (or sell it ;) ), also interested in getting those numbers to light up. Pics:
http://imgur.com/a/8Ns14

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Muirium
µ

12 Jul 2014, 22:04

Interesting keypad. I've no idea what it is, or the identity of those enormous switches. But should be pretty old and high quality.

Image

I have a Honeywell hall effect keyboard that's a challenge to convert. You might be in a similar position. But having two is good, you have some leeway to experiment!

hwood34

12 Jul 2014, 22:44

Well, the seller listed it under "Raymond PC keypad", but I couldn't find anything on that. I really love the feel of the switches

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Muirium
µ

12 Jul 2014, 22:57

Smooth linear, right? How many pins do they each have underneath?

hwood34

13 Jul 2014, 00:21

Yep, linear. It looks like PCB-mount mx's, except these seem to have four stabilizing pins in the corners, and one actual pin in the center

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Daniel Beardsmore

13 Jul 2014, 00:28

The nearest thing I've ever seen is a couple of magnetic reed types, both cube-shaped. Here's one:

[wiki]Unitra Polam magnetic reed[/wiki]

I saw something very similar in another keyboard, but I didn't fancy taking home the Borg cube–sized computer it came with just to get the switches. (I know those were magnetic reed of a very similar design as one of them was broken and I could see inside.) I forget what the keycap mount was, though.

hwood34

14 Jul 2014, 09:05

How would I go about direct wiring this board? Could someone explain the process like they were talking to a five year old with a shitty soldering iron? Also, it looks like each switch only has one contact instead of two. The switches look like they are in housings in sets of four, and at the end there are two contacts.
http://imgur.com/vm6Hhe7
also illustrated how the columns were aligned

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Nuum

14 Jul 2014, 09:46

Haven't you said over at geekhack that these are Hall effect switches? In that case I don't think you can simply handwire them. I think you would need a different controller than the common ones for contact switches.

hwood34

14 Jul 2014, 15:44

Maybe someone thought that a while ago, but more likely some kind of reed

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