#include <FastLED.h>

#define NUM_LEDS 1

#define DATA_PIN 8

CRGB leds[NUM_LEDS];

void setup() {

//	Serial.begin(9800);
//  Serial.println("start");

    FastLED.addLeds<WS2812B,  DATA_PIN,GRB>(leds,NUM_LEDS);
//  FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);  // GRB ordering is assumed

	  FastLED.setBrightness(255);

}



void loop() {

    leds[0] = CRGB::Blue;
    FastLED.show(); 
    delay(500);

    leds[0] = CRGB::Yellow;
    FastLED.show(); 
    delay(500);

}