Planck

A compact 40% (12x4) ortholinear keyboard kit designed by OLKB and sold by Drop. A complete hardware rework of the rev6 Planck PCB, with support for up to 8 rotary encoders. More info on qmk.fm

Keyboard Maintainer: Jack Humbert
Hardware Supported: Planck PCB rev7
Hardware Availability: Drop

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

make planck/rev7:default

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

Encoders

Encoders must have matching pulse & detent resolutions (e.g. 24/24) for the scanning to work properly. Multiple encoders can be used at the same time. If an encoder has a switch built-in, it's connected to the key at that location with index number:

,-----------------------------------------------------------------------------------.
|   0  |      |      |      |      |      |      |      |      |      |      |   4  |
|------+------+------+------+------+------+------+------+------+------+------+------|
|   1  |      |      |      |      |      |      |      |      |      |      |   5  |
|------+------+------+------+------+------+------+------+------+------+------+------|
|   2  |      |      |      |      |      |      |      |      |      |      |   6  |
|------+------+------+------+------+------+------+------+------+------+------+------|
|   3  |      |      |      |      |             |      |      |      |      |   7  |
`-----------------------------------------------------------------------------------'

Planck rev7 supports ENCODER_ENABLE and ENCODER_MAP_ENABLE. If both ENCODER_MAP_ENABLE and ENCODER_ENABLE are defined, ENCODER_MAP_ENABLE takes precedence. On the default keymap, each encoder will play its own rising/falling tone sequence when rotated, and will reset the pitch after one second of inactivity.

With ENCODER_ENABLE

Define it as follows in rules.mk:

ENCODER_ENABLE = yes

Zero-indexed (compared to being one-indexed on the PCB's silkscreen) in the encoder_update_user(uint8_t index, bool clockwise) function.

With ENCODER_MAP_ENABLE

Define it as follows in rules.mk:

ENCODER_ENABLE = yes
ENCODER_MAP_ENABLE = yes

If you enable ENCODER_MAP_ENABLE, define const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][NUM_DIRECTIONS] and configure your keycodes. If you enable ENCODER_MAP_ENABLE, encoder_update_user is not used directly.

Additionally, you can use the following config.h options:

#define ENCODER_MAP_KEY_DELAY 10
#define ENCODER_RESOLUTION 4

Some Planck-specific config.h options:

// sets the length (in seconds) of the watchdog timer, which will reset the keyboard due to hang/crash in the code
#define PLANCK_WATCHDOG_TIMEOUT 1.0
// disables the watchdog timer - you may want to disable the watchdog timer if you use longer macros
#define PLANCK_WATCHDOG_DISABLE
// Sets the time to wait for the rotary encoder pin state to stabilize while scanning (Default is 20(us))
#define PLANCK_ENCODER_SETTLE_PIN_STATE_DELAY 20