Author Topic: How thin can hand-wired KB be ?  (Read 1718 times)

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Offline DonnyD

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How thin can hand-wired KB be ?
« on: Sat, 24 February 2018, 15:09:39 »
In this topic i want to see your hand-wired KB creations as i plan to build myself. I am going for as thin as possible, soshow me what you got !! ;)

Offline TalkingTree

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Re: How thin can hand-wired KB be ?
« Reply #1 on: Sat, 24 February 2018, 15:13:26 »
26AWG worked in my tests. Perhaps even thinner will do.
My opensource projects: GH80-3000, TOAD, XMMX.

Offline DonnyD

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Re: How thin can hand-wired KB be ?
« Reply #2 on: Sat, 24 February 2018, 15:15:19 »
What about chassis thikness ? Is it any thicker than with pcb ?

Offline TalkingTree

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Re: How thin can hand-wired KB be ?
« Reply #3 on: Sat, 24 February 2018, 15:23:31 »
What about chassis thikness ? Is it any thicker than with pcb ?
I wouldn't worry about the chassis unless you're making a bluetooth keyboard.
My opensource projects: GH80-3000, TOAD, XMMX.

Offline DonnyD

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Re: How thin can hand-wired KB be ?
« Reply #4 on: Sat, 24 February 2018, 15:28:41 »
Did you ran wires as close to plate, or just where PCB would go ? I think running wires close to plate will decrease thikness bu 1-3 mm (?). Gaps between switches would be great channels :D

Offline TalkingTree

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Re: How thin can hand-wired KB be ?
« Reply #5 on: Sat, 24 February 2018, 15:33:52 »
You need some clearance beneath the switches anyway since the contact pins are there.
My opensource projects: GH80-3000, TOAD, XMMX.

Offline Tactile

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Re: How thin can hand-wired KB be ?
« Reply #6 on: Sat, 24 February 2018, 15:34:12 »
If you're careful you can have nothing higher than the switch body, like this guy did.

Offline DonnyD

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Re: How thin can hand-wired KB be ?
« Reply #7 on: Sat, 24 February 2018, 15:42:49 »
Thats pretty much what i am aiming to build in terms of thikness. As switches are plate mounted, ican cut that big plastic pin in the center of switch( that goes into pcb), right ? And if i bend the pins i can potentialy get it about 1-2 mm thinner. I am glad i bought extra switches for that :D

Offline xondat

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Re: How thin can hand-wired KB be ?
« Reply #8 on: Sat, 24 February 2018, 17:26:36 »
The pins are 3.3mm out from the bottom of the switch case, so without bending, it's 8.3mm straight down. I think the plastic pins are 2.8mm? Haven't checked in a while.

Offline ErgoMacros

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Re: How thin can hand-wired KB be ?
« Reply #9 on: Sat, 24 February 2018, 20:32:14 »
The "Keytee" project is nice for this... especially if you're handwriting.
The PCB fits up in-between the key spacing. Adds nothing to the depth of the project. Quite elegant.

* Deskthority: https://deskthority.net/workshop-f7/keytee-controller-breakout-board-for-small-keyboards-t15586.html
* github: https://github.com/trebb/keytee

20 IO pins available so 10x10 = 100 keys, max.
Today's quote: '...“but then the customer successfully broke that.”

Offline ErgoMacros

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Re: How thin can hand-wired KB be ?
« Reply #10 on: Thu, 28 March 2019, 22:37:16 »
And another option, "Postage board" and "Postage board mini":
    Postage: https://geekhack.org/index.php?topic=96805.msg2643814#msg2643814
       25 pins, I think, so 12x13=156 keys, max.

    Mini (in process): https://geekhack.org/index.php?topic=99638.msg2730415#msg2730415
       25 pins, I think, so 12x13=156 keys, max.

Very nice design.
« Last Edit: Sat, 06 April 2019, 19:40:45 by ErgoMacros »
Today's quote: '...“but then the customer successfully broke that.”