#include "FastLED.h"

//#define NUM_LEDS 30
//#define DATA_PIN 6

#define LED_PIN 6
#define LED_TYPE WS2811
#define COLOR_ORDER GRB
#define NUM_LEDS 30
CRGB leds[NUM_LEDS];



void setup() {

       delay(3000);
       FastLED.addLeds<LED_TYPE,LED_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
       //FastLED.addLeds<ws2811, data_pin,="" rgb="">(leds, NUM_LEDS);
      for (int i = 0; i < NUM_LEDS; i++) {
        leds[i] = CRGB::Black;
      }
      FastLED.show();
}

void loop() {
  for (int i = 0; i < NUM_LEDS; i++) {
    leds[i] = CRGB::Red;
    FastLED.show();
    delay(1000);
  }
}