#include <FastLED.h>

const int NUM_LEDS = 30;
const int DATA_PIN = 6;

CRGB leds[NUM_LEDS];

void setup() {
  FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
  
  FastLED.setMaxPowerInVoltsAndMilliamps(5,400);

  FastLED.setBrightness(8);
}

void loop() {
  for (int light=0; light<30; light++){
    leds[light] = CRGB::Red;
    FastLED.show();
    delay(100);
  if (leds[light] = CRGB::Red){
    delay(100);
    leds[light] = CRGB::Black;
  }}
    for (int light=0; light<30; light++){
    leds[light] = CRGB::Black;
  }
    FastLED.show();
    delay(100);
}