2 layers33.7 × 97.8 mm
HAN ESP TSS721
UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported
29 parts470
2 layers143.5 × 104.4 mm
My split keyboard
hida-yat/split_keyboardA custom 40-key low-profile split keyboard featuring an RJ45 interconnect
- Size
- 143.5 × 104.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 51
- Nets
- 34
- Pads
- 241
- Tracks, vias
- 251, 121
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 16 Jul 2026
- Updated
- 30 Jul 2026
Overview
My split keyboard is an open-source printed circuit board by hida-yat, from the hida-yat/split_keyboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 143.5 × 104.4 mm with 51 parts on 34 nets, routed with 251 tracks and 121 vias.
It is built around the RJ45. Its parts include 20 diodes, 20 switches, 1 IC and 1 connector. It belongs with the keyboards and input boards of this library.
Main components
1README
README.md40キー有線分割キーボード
LANケーブルで左右接続する40キーのロープロファイル分割キーボード
特徴
- 左右間接続にLANケーブルを使用．左右の通信はUART通信
- Kailh Choc V1/V2対応
- ホットスワップ対応
- ファームウェアとしてQMK Firmware，およびVialに対応．GUIから簡単にキーマップ変更が可能
- MCUにはSeeed XIAO RP2040を採用
- PCB，ケース，キーキャップを独自設計
必要部品
| 部品 | 数量 |
|---|---|
| Seeed Studio XIAO RP2040 | 2 |
| Kailh Choc V1/V2キースイッチ | 40 |
| ホットスワップソケット | 40 |
| ダイオード 1N4148W | 40 |
| RJ45コネクタ | 2 |
| LANケーブル | 1 |
| PCB | 左右各1枚 |
| M2✕3 インサートナット | 18 |
| M2✕5 | 10 |
| M2✕10 | 8 |
| 各3Dプリントパーツ | 左右各1 |
| キーキャップ | 40 |
Parts
51| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | D | Diode_SMD:D_SOD-123 | D1, D2, D3, D4, D5, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20 +4 |
| 20 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2_1.00u | SW1, SW2, SW3, SW4, SW5, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20 +4 |
| 1 | RJ45 | my_lib:78108P8C | J1 |
| 1 | ~ | my_lib:XIAO-RP2040-SMD | U1 |
The 42 most common of 51 parts.
Questions
How big is the My split keyboard PCB?
It measures 143.5 × 104.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the My split keyboard use?
51 parts, built around the RJ45. 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 My split keyboard KiCad files?
From the hida-yat/split_keyboard repository on GitHub, at the commit this page was made from: the board is kicad/left/my_split_keyboard.kicad_pcb and its schematic kicad/left/my_split_keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the My split keyboard design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 4 layers84 × 82 mm
Toad
travisgoodspeed/goodfet
An embedded bus adapter for various microcontrollers and radios.
241 parts333 - 2 layers100 × 100 mm
- 2 layers50 × 55.4 mm
- 2 layers67.9 × 47.8 mm
Platine
nv1t/standing-desk-interceptor
I wanted to intercept the communication between my Flexispot standing desk buttons. This is the progress on the project
11 parts52CC0-1.0 - 4 layers90 × 75 mm
- 4 layers73.9 × 84.5 mm
Aei
Severson-Group/AMDC-Hardware
Circuit board designs for controlling advanced motor systems
54 parts51 - 2 layers99 × 60 mm
Pwr
mfkiwl/KiwiSDR_PCB
KiCAD PCB files for KiwiSDR project including active antenna and bias tee
64 parts46