2 layers105.4 × 215.6 mm
MIDI Sax
hackclub/OnBoard
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75 parts915
2 layers212.3 × 103.6 mm
Koumori
dlip/koumori13Koumori 28 Key Keyboard
- Size
- 212.3 × 103.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 75
- Nets
- 51
- Pads
- 492
- Tracks, vias
- 778, 59
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Jan 2026
- Updated
- 16 Feb 2026
Overview
Koumori is an open-source printed circuit board by dlip, from the dlip/koumori repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 212.3 × 103.6 mm with 75 parts on 51 nets, routed with 778 tracks and 59 vias.
Its parts include 28 diodes and 28 switches.
README
README.mdKoumori Keyboard
- Designed to be minimalistic and portable
- 28 keys (Using Engram with my layout)
- Unibody design
- RP2040-Zero MCU
- Cirque 40mm trackpad with glass overlay
- Customizable layout with QMK Firmware
- Case with handle and magnetic lid
- PCB and case designed in Ergogen
- Simple build guide with no microscopic parts
- Name means the animal "bat" in Japanese
- Open source and free (GPL-3.0)
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 28 | ComboDiode | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +12 | |
| 28 | PG1350 | S1, S2, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20, S21, S22, S23 +12 | |
| 11 | MountingHole_2.2mm_M2_Pad_Via | _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11 | |
| 2 | LOGO | Koumori:logo-mori | , |
| 2 | LOGO | Koumori:logo-kou | , |
| 1 | Pointing-connector | Pointing1 | |
| 1 | RP2040-Zero | RP2040Zero1 |
The 73 most common of 75 parts.
Questions
How big is the Koumori PCB?
It measures 212.3 × 103.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Koumori use?
75 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 Koumori KiCad files?
From the dlip/koumori repository on GitHub, at the commit this page was made from: the board is kicad/koumori.kicad_pcb and its schematic kicad/koumori.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Koumori design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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