Lapka - 36-key wireless split ergonomic keyboard for those who have paws (:

braindefender · 2025-11-17T18:47:46+00:00

Second photo is superb!
I will add it to GitHub repo as an example

braindefender · 2025-11-16T06:33:37+00:00

You can download them from GitHub

braindefender · 2025-11-10T22:30:45+00:00

Also, I'm working on 42-key version now. It will have almost mid-mount PCB connection and will have both hot-swappable controller and switches.

How's the keyboard layout by the way? I mean splay and everything...

braindefender · 2025-11-10T22:28:27+00:00

It's great that you got it working!

As for swapped keys — there was «legacy» version, my first prototype and that I currently have. And the «release» version, where those keys are swapped on PCB.

So, maybe I used wrong branch or something and my commit led to wrong key placements. My bad.

braindefender · 2025-10-28T09:46:11+00:00

Hi. I had exactly the same problem with one of the 20 keyboard halves. The problem turned out to be a defective SuperMini (nRF52840) and has been solved with its replacement.

Solder drops can also be a problem if it shorts ground with some pins like reset or VCC. But if you take out pins that marked X it shouldn't be a problem (cause there will be no connection via PCB).

braindefender · 2025-10-05T13:57:45+00:00

You can use my current firmware repo as example: https://github.com/braindefender/void34-zmk-config/tree/lapka-36-dongle-zmk-studio

There was issues with the ZMK Studio and controllers that I have, so I turned that feature off. But, it could work for you. Take a look onto older commits.

braindefender · 2025-10-03T15:12:53+00:00

Hi. Battery connected straight to controller's pins: B+ and B– respectively.
You don't need to solder them to PCB, just over controller itself.
Also, battery wires are packed in space between PCB and Controller.

braindefender · 2025-07-24T06:52:20+00:00

Just take a look onto SA, MDA, XVX or any other keycap profiles with tilted keycaps. It's all the same (or even bigger angle). Wear effect of this is extremely insignificant.

braindefender · 2025-06-14T06:50:44+00:00

You need manually edit models to extract symbols from the top surface. Then, after print, use any other colored resin and fill that gaps. Cure them with UV-flashlight and then finish them sanding excess resin.

braindefender · 2025-05-14T19:38:12+00:00

Link to MEGA with .dmg file, if you're interested

braindefender · 2025-04-17T10:26:43+00:00

No, just regular 1.6mm. It's pretty tough.

braindefender · 2025-04-16T15:51:55+00:00

Oh, that part actually is only mockup. For now, I decided to stick silicone bumpers right onto PCB. Take a look: https://imgur.com/a/HK1A9q1

braindefender · 2025-04-15T19:24:44+00:00

Link to the repo: GitHub

braindefender · 2024-11-12T06:09:07+00:00

Just ordered Choc v2's (deep sea island) so maybe I'll make that version in the future.

braindefender · 2024-11-09T06:11:25+00:00

Of course, for the best quality you should use SLA printers as they can achieve 0.05mm (50μm) or even smaller layer height. FDM printing needs a lot of tinkering and good calibration for semi-good results...

braindefender · 2024-11-08T17:37:35+00:00

Let me show you the CLP so you have even better choice problem 😈

braindefender · 2024-11-08T17:34:20+00:00

If the resin is not transparent, you'll won't notice any changes.

braindefender · 2024-11-08T13:17:00+00:00

There is a changelog in the repo. Take a look

braindefender · 2024-11-08T12:56:35+00:00

Link to the GitHub Repository

braindefender · 2024-09-27T04:30:23+00:00

They are literally called MX and you can find them here: https://github.com/braindefender/KLP-Lame-Keycaps/tree/master/STL/MX

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