keychron_qmk_firmware/keyboards/crkbd

Corne Keyboard (CRKBD)

Also known (incorrectly) as the HeliDox.

A split keyboard with 3x6 vertically staggered keys and 3 thumb keys.

Keyboard Maintainer: foostan @foostan
Hardware Supported: Crkbd PCB, Pro Micro
Hardware Availability: PCB & Case Data

Make example for this keyboard (after setting up your build environment):

make crkbd:default

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.

Bootloader

The Corne PCBs have a reset button next to the TRRS jack to enter in to the bootloader.

Additionally, if you hold down the "Q" or "P" buttons when plugging in that half of the keyboard (per the default QWERTY layout), this will jump to the bootloader and reset the EEPROM (persistent storage). This would normally be the very top corner-most position, but due to the breakaway column, it's left at Q and P for compatibility.

RGB Matrix

The Corne Keyboard also supports using the RGB Matrix feature, in place of RGB Light. This provides a better experience when using the keyboard, as it supports a number of per key effects properly. If you're not using the in switch LEDs, then you may want to pass on doing this.

In your keymap's rules.mk file, add the following:

RGBLIGHT_ENABLE = no
RGB_MATRIX_ENABLE = yes

And in your config.h file, add the following:

#ifdef RGB_MATRIX_ENABLE
#   define RGB_MATRIX_KEYPRESSES // reacts to keypresses
// #   define RGB_MATRIX_KEYRELEASES // reacts to keyreleases (instead of keypresses)
#   define RGB_DISABLE_WHEN_USB_SUSPENDED // turn off effects when suspended
#   define RGB_MATRIX_FRAMEBUFFER_EFFECTS
// #   define RGB_MATRIX_LED_PROCESS_LIMIT (RGB_MATRIX_LED_COUNT + 4) / 5 // limits the number of LEDs to process in an animation per task run (increases keyboard responsiveness)
// #   define RGB_MATRIX_LED_FLUSH_LIMIT 16 // limits in milliseconds how frequently an animation will update the LEDs. 16 (16ms) is equivalent to limiting to 60fps (increases keyboard responsiveness)
#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 150 // limits maximum brightness of LEDs to 150 out of 255. Higher may cause the controller to crash. 
#    define RGB_MATRIX_HUE_STEP 8
#    define RGB_MATRIX_SAT_STEP 8
#    define RGB_MATRIX_VAL_STEP 8
#    define RGB_MATRIX_SPD_STEP 10

/* Enable the animations you want/need.  You may need to enable only a small number of these because       *
 * they take up a lot of space.  Enable and confirm that you can still successfully compile your firmware. */
// RGB Matrix Animation modes. Explicitly enabled
// For full list of effects, see:
// https://docs.qmk.fm/#/feature_rgb_matrix?id=rgb-matrix-effects
#    define ENABLE_RGB_MATRIX_ALPHAS_MODS
#    define ENABLE_RGB_MATRIX_GRADIENT_UP_DOWN
#    define ENABLE_RGB_MATRIX_GRADIENT_LEFT_RIGHT
#    define ENABLE_RGB_MATRIX_BREATHING
#    define ENABLE_RGB_MATRIX_BAND_SAT
#    define ENABLE_RGB_MATRIX_BAND_VAL
#    define ENABLE_RGB_MATRIX_BAND_PINWHEEL_SAT
#    define ENABLE_RGB_MATRIX_BAND_PINWHEEL_VAL
#    define ENABLE_RGB_MATRIX_BAND_SPIRAL_SAT
#    define ENABLE_RGB_MATRIX_BAND_SPIRAL_VAL
#    define ENABLE_RGB_MATRIX_CYCLE_ALL
#    define ENABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT
#    define ENABLE_RGB_MATRIX_CYCLE_UP_DOWN
#    define ENABLE_RGB_MATRIX_RAINBOW_MOVING_CHEVRON
#    define ENABLE_RGB_MATRIX_CYCLE_OUT_IN
#    define ENABLE_RGB_MATRIX_CYCLE_OUT_IN_DUAL
#    define ENABLE_RGB_MATRIX_CYCLE_PINWHEEL
#    define ENABLE_RGB_MATRIX_CYCLE_SPIRAL
#    define ENABLE_RGB_MATRIX_DUAL_BEACON
#    define ENABLE_RGB_MATRIX_RAINBOW_BEACON
#    define ENABLE_RGB_MATRIX_RAINBOW_PINWHEELS
#    define ENABLE_RGB_MATRIX_RAINDROPS
#    define ENABLE_RGB_MATRIX_JELLYBEAN_RAINDROPS
#    define ENABLE_RGB_MATRIX_HUE_BREATHING
#    define ENABLE_RGB_MATRIX_HUE_PENDULUM
#    define ENABLE_RGB_MATRIX_HUE_WAVE
#    define ENABLE_RGB_MATRIX_PIXEL_RAIN
#    define ENABLE_RGB_MATRIX_PIXEL_FLOW
#    define ENABLE_RGB_MATRIX_PIXEL_FRACTAL
// enabled only if RGB_MATRIX_FRAMEBUFFER_EFFECTS is defined
#    define ENABLE_RGB_MATRIX_TYPING_HEATMAP
#    define ENABLE_RGB_MATRIX_DIGITAL_RAIN
// enabled only of RGB_MATRIX_KEYPRESSES or RGB_MATRIX_KEYRELEASES is defined
#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_SIMPLE
#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE
#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_WIDE
#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_MULTIWIDE
#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_CROSS
#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_MULTICROSS
#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_NEXUS
#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_MULTINEXUS
#    define ENABLE_RGB_MATRIX_SPLASH
#    define ENABLE_RGB_MATRIX_MULTISPLASH
#    define ENABLE_RGB_MATRIX_SOLID_SPLASH
#    define ENABLE_RGB_MATRIX_SOLID_MULTISPLASH
#endif

After this is done, you should be able to use the normal RGB keycodes, but you'll see the RGB Matrix effects in use, giving a much better experience.