* `#define BACKLIGHT_LEVELS 3`
* number of levels your backlight will have (maximum 15 excluding off)
* `#define BACKLIGHT_BREATHING`
* enables backlight breathing (only works with backlight pins B5, B6 and B7)
* `#define BREATHING_PERIOD 6`
* the length of one backlight "breath" in seconds
* `#define BACKLIGHT_LEVELS 3`
* number of levels your backlight will have (maximum 15 excluding off)
* `#define BACKLIGHT_BREATHING`
* enables backlight breathing (only works with backlight pins B5, B6 and B7)
* `#define BREATHING_PERIOD 6`
* the length of one backlight "breath" in seconds