2 layers123.9 × 94.4 mm
2 layers123.9 × 94.4 mm
Roba L
kumamuk-git/roBa363- Size
- 123.9 × 94.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 42
- Pads
- 370
- Tracks, vias
- 446, 37
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 14 Aug 2024
- Updated
- 6 Apr 2026
Overview
Roba L is an open-source printed circuit board by kumamuk-git, from the kumamuk-git/roBa repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 123.9 × 94.4 mm with 56 parts on 42 nets, routed with 446 tracks and 37 vias.
Its parts include 24 switches, 23 diodes, 7 connectors and 1 IC.
README
README.mdroBa
roBaはkeyballに影響を受けたワイヤレスキーボードです
特徴:
- ZMK firmwareによるbluetooth(BLE)対応
- 分割カラムスタッガード配列(キー数:42)
- トラックボール搭載
- 水平ロータリーエンコーダ搭載（v1: evqwgd001, v2以降: CKW12）
Where to Buy
BOOTHにて組み立てキットが購入可能
Build Guide
ビルドガイドはこちら
Firmware
ファームウェアのリポジトリはこちら
デフォルトでは以下のように設定されています
- オートマウスレイヤー：4
- スクロールレイヤー：5
- CPI：400
ファームウェア、キーマップの編集手順はこちら
（ZMK STUDIOでもキーマップ編集可能）
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | D | roBa:Diode_SMD | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +7 |
| 19 | SW_PUSH | roBa:SW_MX | SW1, SW2, SW3, SW4, SW5, SW6, SW10, SW11, SW12, SW13, SW14, SW15, SW17, SW18, SW19, SW22 +3 |
| 7 | Conn_01x01-Connector_Generic | MountingHole:MountingHole_4.3mm_M4 | J1, J2, J3, J4, J5, J6, J7 |
| 3 | SW_PUSH | roBa:SW_MX_Choc | SW16, SW20, SW23 |
| 1 | BATT | roBa:JST_PH_S2B-PH-K_custom | B1 |
| 1 | RotaryEncoder_Switch | roBa:SW_MX_EC12 | SW21 |
| 1 | SW_SPDT | roBa:TGSW_MSK-12D19 | SW24 |
| 1 | ~ | roBa:XIAO_nRF52840_wBAT_wNFC | U1 |
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Questions
How big is the Roba L PCB?
It measures 123.9 × 94.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Roba L use?
56 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 Roba L KiCad files?
From the kumamuk-git/roBa repository on GitHub, at the commit this page was made from: the board is pcb/v1/roBa_L/roba_L.kicad_pcb and its schematic pcb/EVQWGD001_extension/EVQWGD001_extension.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Roba L 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).