Klein
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snsten
Klein keyboard is a 36 keys, columnar staggered, split ergo keyboard
Klein Keyboard
Klein keyboard is a 36 keys, columnar staggered, split keyboard named after Felix Klein
Features
- Column Staggered
- Bluetooth compatible with power switch
- Seeed Studio XIAO-BLE / Pro Micro / nice!nano* / KB2040 / RP2040(boards with Pro Micro pinout) compatible
- Hotswap MX and Choc switches support
- Trackpad support with FPC cable and direct wiring
- Reversible SMD and through hole diode footprint
* nice!nano firmware not available at the moment.
Versions
Supports multiple options of micro controller and sensors.
| Features Supported | Microcontroller | Firmware available | Wired | Wireless |
|---|---|---|---|---|
| Encoder or OLED | XIAO-BLE | Yes | Yes | |
| Encoder, OLED, TouchPad, Buzzer, Haptics | Pro Micro | Yes | Yes | |
| Encoder, OLED, TouchPad, Buzzer, Haptics | KB2040/RP2040 | Yes | Yes | |
| Encoder and OLED | nice!nano | No (Planned) | Yes |
Broadly divided in two types:
Wireless
- Can be made with Seeed Studio XIAO-BLE
- Supports either rotary encoder or OLED
- Battery connectors JST and THT
Wireless touchpad is currently not supported in ZMK.
Wired
- With any Pro Micro based boards
- Can support encoders, OLED, Touchpad, Buzzer and Haptics
Keyboard Images
PCB with both Choc and MX switches
Low Profile Choc version
MX version
Repo Layout and Files
.
├── BOM
│ ├── BOM-3235-SEEED.csv <- BOM
│ └── ibom.html
├── Case
│ └── *.stl <- Case stl Files
│ └── Prototype <- FreeCad project files (Not tested)
│ └── SwitchPlateFR4 <- SwitchPlate PCB files (Not tested)
├── docs
│ └── images
├── Logo
├── PCB
└── README.md
BOM
It is available in BOM directory as csv file and interactive HTML BOM
Build Guide
Todo
- Add Build Guide
- Add Touchpad related 3D Models
- Software support for Touchpad/OLED
Firmware
- ZMK shield for Klein with rotary encoder support.
- QMK Firmware for Pro Micro with touchpad support.
Refrences
These projects inspired and helped in making Klein:
snsten