mini42
A pre-built, low profile, split mechanical keyboard based on the RP2040 processor
- Keyboard Maintainer: Kevin Gee
- Hardware Supported: mini42 split ergonomic keyboard
- Hardware Availability: https://controller.works/products/mini42-low-profile-ergonomic-keyboard Hardware is available as pre-built units only.
Make example for this keyboard (after setting up your build environment):
make controllerworks/mini42:default
Flashing example for this keyboard:
make controllerworks/mini42:default:flash
See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.
Features
- Highly integrated design with microcontroller, USB and TRRS connectors, and OLED all integrated on the main board with no secondary modules
- RP2040 processor by Raspberry Pi Foundation running at 130 MHz with 16MB flash memory
- CNC milled aluminum case with only 8mm thickness
- "PCB art" shine through back plate with gold surface finish
- 128x32 OLED on each keyboard half
- 42 per-key RGB LEDs and 12 backlight RGB LEDS are individually addressable
- ESD and over-current protection on USB and TRRS connectors
- Reset and boot tactile switches
- USB C host connection
- Hot swap connectors for Kailh Chocolate PG1350 switches
- Chocolate key spacing (18mm horizontal x 17mm vertical)
Bootloader
Enter the bootloader in 3 ways:
- Bootmagic reset: Hold down the upper left key on the left hand keyboard half or the upper right key on the right hand keyboard half while plugging in USB
- Physical reset button: Press the RST button twice, rapidly
- Keycode in layout: Press the key mapped to
QK_BOOTif it is available
Pin Assignment
| Name | Pin | Left Row | Left Column | Right Row | **Right Column |
|---|---|---|---|---|---|
| LED | GP0 | ||||
| DATA | GP1 | ||||
| DATA2* | GP28 | ||||
| KEY0 | GP2 | 0 | 0 | 4 | 0 |
| KEY1 | GP3 | 0 | 1 | 4 | 1 |
| KEY2 | GP4 | 0 | 2 | 4 | 2 |
| KEY3 | GP5 | 0 | 3 | 4 | 3 |
| KEY4 | GP6 | 0 | 4 | 4 | 4 |
| KEY5 | GP7 | 0 | 5 | 4 | 5 |
| KEY6 | GP8 | 1 | 0 | 5 | 0 |
| KEY7 | GP9 | 1 | 1 | 5 | 1 |
| KEY8 | GP10 | 1 | 2 | 5 | 2 |
| KEY9 | GP11 | 1 | 3 | 5 | 3 |
| KEY10 | GP12 | 1 | 4 | 5 | 4 |
| KEY11 | GP13 | 1 | 5 | 5 | 5 |
| KEY12 | GP14 | 2 | 0 | 6 | 0 |
| KEY13 | GP15 | 2 | 1 | 6 | 1 |
| KEY14 | GP16 | 2 | 2 | 6 | 2 |
| KEY15 | GP17 | 2 | 3 | 6 | 3 |
| KEY16 | GP18 | 2 | 4 | 6 | 4 |
| KEY17 | GP19 | 2 | 5 | 6 | 5 |
| KEY18 | GP20 | 3 | 0 | 7 | 0 |
| KEY19 | GP21 | 3 | 1 | 7 | 1 |
| KEY20 | GP22 | 3 | 2 | 7 | 2 |
| SDA | GP24 | ||||
| SCL | GP25 |
*DATA2 on production units, not connected on prototype units
** Right Column numbers run right (pinky position) to left (thumb position)