NeoBoomerang - A One Handed Chording Keyboard
- I2C connections STEMMA QT connnected
- Only one NeoKey jumper pad requires soldering
- Encoder for scrolling
- 10 NeoPixel LEDs
- USB-C
- Red Cherry MX (silent, low force)
- CircuitPython 9.x based
- Emulates a 60% keyboard with only 8 keys
- FreeCAD 0.21.2
- Minimal 3D printed plate for mounting
| Item | Source | Part Number |
|---|---|---|
| Controller | Adafruit | KB2040 |
| Keys | Adafruit | NeoKey 1x4 QT I2C |
| Encoder | Adafruit | I2C Stemma QT Rotary Encoder |
| Cables | Adafruit | STEMMA QT 50mm |
| Cables | Adafruit | STEMMA QT 200mm |
| Screws | Adafruit | M2.5 Machine Screws / Stand-off |
- 20 WPM is my best
- 16-18 WPM is typical
-
UV buttons are for fingers:
- Index finger
- Middle finger
- Ring finger
- Pinky finger
-
Thumb
- Blue: white space
- Green: letters
- Yellow: numbers
- Red: delete