2 layers130.3 × 85.3 mm
Lapka ChocV1V2 Solder
braindefender/lapka
Wireless ergonomic split keyboard for those who have paws (:
21 parts131CC-BY-SA-4.0
2 layers130.3 × 85.3 mm
Lapka ChocV2 Solder
braindefender/lapka131Wireless ergonomic split keyboard for those who have paws (:
- Size
- 130.3 × 85.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 25
- Pads
- 106
- Tracks, vias
- 188, 47
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 15 Apr 2025
- Updated
- 14 Jul 2026
Overview
Lapka ChocV2 Solder is an open-source printed circuit board by braindefender, from the braindefender/lapka repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 130.3 × 85.3 mm with 21 parts on 25 nets, routed with 188 tracks and 47 vias.
Its parts include 18 switches and 1 IC. It belongs with the keyboards and input boards of this library.
README
README.md
Лапка
Беспроводная эргономичная сплит-клавиатура для тех, у кого лапки (:
Особенности:
- 36 клавиш, совместима с Choc v2 свитчами
- Direct-pin подключение — при сборке не требуются диоды
- Низкопрофильный корпус (свитчи практически касаются стола)
Структура репозитория:
| Директория | Описание |
|---|---|
| 3MF | Проект OrcaSlicer (для примера параметров печати) |
| Assets | Изображения и фото |
| Fusion | Проект Autodesk Fusion 360 |
| Gerbers | Gerber-файлы для производства плат |
| Guide | Описание процесса сборки |
| KiCad | Проект KiCad (схема, плата, компоненты) |
| STL | 3D-модели частей корпуса |
Ссылки на актуальные прошивки:
RMK
Следуйте инструкциям в README.md репозитория с RMK прошивкой.
ZMK
Используйте вариант подключения direct-pin, описанный в lapka_wellum36_left.overlay и lapka_wellum36_right.overlay.
Откройте GitHub Actions и найдите последний успешно собранный билд ветки lapka-36.
В нём будет артефакт сборки firmware.zip, который содержит все нужные для прошивки файлы.
Тестовая прошивка расположена в ветке lapka-36-test. В ней всего один слой и клавиши на тамб-кластере заменены на F1-F6. Это позволит увидеть нажатия клавиш на key-test.ru.
История изменений
v2.2
- Добавлена ссылка на репозиторий прошивки RMK
v2.1
- Изменена ссылка на репозиторий прошивки ZMK
v2
- Добавлена поддержка Choc v1
- Изменена разметка пинов
- Обновлена шелкография, логотип перенесён на Cu слой
- Добавлен проект Fusion 360
v1
- Первый релиз. Только для Choc v2
Lapka
Wireless ergonomic split keyboard for those who have paws (:
Peculiarities:
- 36 keys, Choc v2 compatible
- Direct-pin connection — no diodes needed required
- Low-profile case (switches almost touch the table)
Repository structure:
| Directory | Description |
|---|---|
| 3MF | OrcaSlicer project files (printing parameters example) |
| Assets | Images and photos |
| Fusion | Autodesk Fusion 360 project |
| Gerbers | Gerber-files for PCB production |
| Guide | Build guide |
| KiCad | KiCad project (schematics, PCB design, components) |
| STL | 3D-models of case parts |
Links to the current firmwares:
RMK
Follow the instructions in the README.md file of the RMK firmware repository.
ZMK
Use direct pin layout, described in lapka_wellum36_left.overlay and lapka_wellum36_right.overlay.
Open GitHub Actions and find latest successful build of branch lapka-36.
In that build you'll find artifact firmware.zip, which contain all the neccessary firmware files.
Test firmware is located in branch lapka-36-test. There are single layer with F1-F6 keys on the thumb-cluster. That will help to see keypresses on the key-test.ru.
Changelog
v2.2
- Added link to RMK Firmware repo
v2.1
- Changed link to ZMK Firmware repo
v2
- Added support for Choc v1
- Changed pin layout
- Updated silk-screen, moved logo to Cu layer
- Added Fusion 360 project
v1
- Initial release. Only for Choc v2
Фото / Photos
Original
From awesome people
by Иосиф Правец
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | ~ | PCM_Switch_Keyboard_Kailh:SW_KLPv2_DS | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18 +2 |
| 1 | ~ | Library:SuperMini NRF52840 | U2 |
The 19 most common of 21 parts.
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Questions
How big is the Lapka ChocV2 Solder PCB?
It measures 130.3 × 85.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Lapka ChocV2 Solder use?
21 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Lapka ChocV2 Solder KiCad files?
From the braindefender/lapka repository on GitHub, at the commit this page was made from: the board is KiCad/Archived/Lapka_ChocV2_Solder.kicad_pcb and its schematic KiCad/Archived/Lapka.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lapka ChocV2 Solder design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).