simple_test.ino

// simple test

#include "FastLED.h"
#define NUM_LEDS 90
#define PIN 12
CRGB leds[NUM_LEDS];

void setup() {
  FastLED.addLeds<WS2812B, PIN, GRB>(leds, NUM_LEDS);
}

void loop() {
  leds[0] = CRGB(0,0,0);        //off
  leds[1] = CRGB(255,255,255);  //white
  leds[2] = CRGB(255,0,0);      //red
  leds[3] = CRGB(0,255,0);      //green
  leds[4] = CRGB(0,0,255);      //blue

  FastLED.show();
  delay(1000);
}