If you need to change your RGB lighting in code, for example in a macro to change the color whenever you switch layers, QMK provides a set of functions to assist you. See [`rgblight.h`](https://github.com/qmk/qmk_firmware/blob/master/quantum/rgblight.h) for the full list, but the most commonly used functions include:
If you need to change your RGB lighting in code, for example in a macro to change the color whenever you switch layers, QMK provides a set of functions to assist you. See [`rgblight.h`](https://github.com/qmk/qmk_firmware/blob/master/quantum/rgblight.h) for the full list, but the most commonly used functions include:
|`rgblight_enable_noeeprom()` |Turn LEDs on, based on their previous state (not written to EEPROM) |
|`sethsv(hue, sat, val, ledbuf)` |Set ledbuf to the given HSV value |
|`rgblight_disable()` |Turn LEDs off |
|`sethsv_raw(hue, sat, val, ledbuf)` |Set ledbuf to the given HSV value without RGBLIGHT_LIMIT_VAL check |
|`rgblight_disable_noeeprom()` |Turn LEDs off (not written to EEPROM) |
|`setrgb(r, g, b, ledbuf)` |Set ledbuf to the given RGB value where `r`/`g`/`b` |
|`rgblight_mode(x)` |Set the mode, if RGB animations are enabled |
|`rgblight_mode_noeeprom(x)` |Set the mode, if RGB animations are enabled (not written to EEPROM) |
### Low level Functions
|`rgblight_setrgb(r, g, b)` |Set all LEDs to the given RGB value where `r`/`g`/`b` are between 0 and 255 (not written to EEPROM) |
|Function |Description |
|`rgblight_setrgb_at(r, g, b, led)` |Set a single LED to the given RGB value, where `r`/`g`/`b` are between 0 and 255 and `led` is between 0 and `RGBLED_NUM` (not written to EEPROM) |
|`rgblight_setrgb_at(r, g, b, index)` |Set a single LED to the given RGB value, where `r`/`g`/`b` are between 0 and 255 and `index` is between 0 and `RGBLED_NUM` (not written to EEPROM) |
|`rgblight_sethsv_at(h, s, v, index)` |Set a single LED to the given HSV value, where `h`/`s`/`v` are between 0 and 255, and `index` is between 0 and `RGBLED_NUM` (not written to EEPROM) |
|`rgblight_setrgb_range(r, g, b, start, end)`|Set a continuous range of LEDs to the given RGB value, where `r`/`g`/`b` are between 0 and 255 and `start`(included) and `stop`(excluded) are between 0 and `RGBLED_NUM` (not written to EEPROM)|
|`rgblight_setrgb_range(r, g, b, start, end)`|Set a continuous range of LEDs to the given RGB value, where `r`/`g`/`b` are between 0 and 255 and `start`(included) and `stop`(excluded) are between 0 and `RGBLED_NUM` (not written to EEPROM)|
|`rgblight_setrgb_master(r, g, b)` |Set the LEDs on the master side to the given RGB value, where `r`/`g`/`b` are between 0 and 255 (not written to EEPROM) |
|`rgblight_sethsv_range(h, s, v, start, end)`|Set a continuous range of LEDs to the given HSV value, where `h`/`s`/`v` are between 0 and 255, and `start`(included) and `stop`(excluded) are between 0 and `RGBLED_NUM` (not written to EEPROM)|
|`rgblight_setrgb_slave(r, g, b)` |Set the LEDs on the slave side to the given RGB value, where `r`/`g`/`b` are between 0 and 255 (not written to EEPROM) |
|`rgblight_setrgb(r, g, b)` |Set effect range LEDs to the given RGB value where `r`/`g`/`b` are between 0 and 255 (not written to EEPROM) |
|`rgblight_sethsv(h, s, v)` |Set all LEDs to the given HSV value where `h` is between 0 and 360 and `s`/`v` are between 0 and 255 |
|`rgblight_setrgb_master(r, g, b)` |Set the LEDs on the master side to the given RGB value, where `r`/`g`/`b` are between 0 and 255 (not written to EEPROM) |
|`rgblight_sethsv_noeeprom(h, s, v)` |Set all LEDs to the given HSV value where `h` is between 0 and 360 and `s`/`v` are between 0 and 255 (not written to EEPROM) |
|`rgblight_setrgb_slave(r, g, b)` |Set the LEDs on the slave side to the given RGB value, where `r`/`g`/`b` are between 0 and 255 (not written to EEPROM) |
|`rgblight_sethsv_at(h, s, v, led)` |Set a single LED to the given HSV value, where `h` is between 0 and 360, `s`/`v` are between 0 and 255, and `led` is between 0 and `RGBLED_NUM` (not written to EEPROM)|
|`rgblight_sethsv_master(h, s, v)` |Set the LEDs on the master side to the given HSV value, where `h`/`s`/`v` are between 0 and 255 (not written to EEPROM) |
|`rgblight_sethsv_range(h, s, v, start, end)`|Set a continuous range of LEDs to the given HSV value, where `h` is between 0 and 360, `s`/`v` are between 0 and 255, and `start`(included) and `stop`(excluded) are between 0 and `RGBLED_NUM` (not written to EEPROM)|
|`rgblight_sethsv_slave(h, s, v)` |Set the LEDs on the slave side to the given HSV value, where `h`/`s`/`v` are between 0 and 255 (not written to EEPROM) |
|`rgblight_sethsv_master(h, s, v)` |Set the LEDs on the master side to the given HSV value, where `h` is between 0 and 360, `s`/`v` are between 0 and 255 (not written to EEPROM) |
|`rgblight_sethsv_slave(h, s, v)` |Set the LEDs on the slave side to the given HSV value, where `h` is between 0 and 360, `s`/`v` are between 0 and 255 (not written to EEPROM) |
#### effect mode change
|`rgblight_toggle()` |Toggle all LEDs between on and off |
|Function |Description |
|`rgblight_toggle_noeeprom()` |Toggle all LEDs between on and off (not written to EEPROM) |
If your keyboard lacks onboard underglow LEDs, you may often be able to solder on an RGB LED strip yourself. You will need to find an unused pin to wire to the data pin of your LED strip. Some keyboards may break out unused pins from the MCU to make soldering easier. The other two pins, VCC and GND, must also be connected to the appropriate power pins.
If your keyboard lacks onboard underglow LEDs, you may often be able to solder on an RGB LED strip yourself. You will need to find an unused pin to wire to the data pin of your LED strip. Some keyboards may break out unused pins from the MCU to make soldering easier. The other two pins, VCC and GND, must also be connected to the appropriate power pins.