#include <FastLED.h>

#define NUM_LEDS  18
#define LED_PIN   2

CRGB leds[NUM_LEDS];

void setup() {
  FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(100);
  Serial.begin(9600);
}

void loop() {

  uint8_t octaves = 1;
  uint16_t x = 0;
  int scale = 100;
  uint8_t hue_octaves = 1;
  uint16_t hue_x = 1;
  int hue_scale = 50;
  uint16_t ntime = millis() / 3;
  uint8_t hue_shift = 5;
  
  fill_noise16 (leds, NUM_LEDS, octaves, x, scale, hue_octaves, hue_x, hue_scale, ntime, hue_shift);
  FastLED.show();
}