qmk_firmware/keyboards/iris/keymaps/rdhaene/config.h

#ifndef CONFIG_USER_H
#define CONFIG_USER_H

#include "config_common.h"

/* Use I2C or Serial, not both */

// #define USE_SERIAL
#define USE_I2C

/* Select hand configuration */

#define MASTER_LEFT
// #define MASTER_RIGHT
// #define EE_HANDS

#undef RGBLED_NUM
#define RGBLIGHT_ANIMATIONS
#define RGBLED_NUM 12
#define RGBLIGHT_HUE_STEP 8
#define RGBLIGHT_SAT_STEP 8
#define RGBLIGHT_VAL_STEP 8

#endif