uint8_t candle_mode_state(Event event, uint16_t arg) {
    static int8_t ramp_direction = 1;
    #define MAX_CANDLE_LEVEL (MAX_LEVEL-CANDLE_AMPLITUDE-15)
    static uint8_t candle_wave1 = 0;
    static uint8_t candle_wave2 = 0;
    static uint8_t candle_wave3 = 0;
    static uint8_t candle_wave2_speed = 0;
    // these should add up to 100
    #define CANDLE_WAVE1_MAXDEPTH 20  // was 30
    #define CANDLE_WAVE2_MAXDEPTH 25  // was 45
    #define CANDLE_WAVE3_MAXDEPTH 15  // was 25
    static const uint8_t candle_wave1_depth = CANDLE_WAVE1_MAXDEPTH * CANDLE_AMPLITUDE / 100;
    static uint8_t candle_wave2_depth       = CANDLE_WAVE2_MAXDEPTH * CANDLE_AMPLITUDE / 100;
    static uint8_t candle_wave3_depth       = CANDLE_WAVE3_MAXDEPTH * CANDLE_AMPLITUDE / 100;
    static uint8_t candle_mode_brightness = 24;