Keyboard Builders' Digest / Inspiration
Lapa v25
The 2025 version of lya Leonov's Lapa, an ergo split keyboard-mouse.
Published December 23, 2025
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Ilya Leonov aka lemosbor posted his most recent Lapa, an interesting split keyboard-mouse with 36 keys and built-in mouse sensors. The original edition was featured here in 2023, in KBD#124. V25 this time means the 2025 version, not the 25th iteration.
Hello everyone! I've greatly improved my keyboard compared to last year's model. For the year of use, I have a lot ideas that I tested on the previous keyboard. I've implemented the best of these ideas in the new Lapa – lemosbor.
Lapa (Лапа) means paw in Russian, which refers to the fact that you use this keyboard "without moving the hands" – at least not raising, hovering and reaching for the mouse all the time.
This approach is pretty rare but not unique, the Mouseky and the Keymouse reflect similar concepts.
Features
- 36 keys (3x5+3)
- MX switches
- RP2040 MCU
- Built-in mouse sensor (ADNS9800)
- 5-way switch, solenoid.
- Custom oval keycaps.
- The wrist-rest is part of the keyboard and is located higher than the main row keys.
- The thumb keys are located on a separate part of the case, much higher than other keys.
- Keywell with per-column arcs.
Resources
- Lapa on Github (photos and description, no files)
Published on Tue 23rd Dec 2025. Featured in KBD #204 (source).
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