#include "FastLED.h"

#define PIN       2      // The pin connected to DATA line to control the LEDs
#define NUM_LEDS  300     // Enter the total number of LEDs on the strip

CRGB leds[NUM_LEDS];

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Hello, ESP32!");

  FastLED.addLeds<WS2812B, PIN, GRB>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  FastLED.setMaxPowerInVoltsAndMilliamps(5, 4500);    // Set power limit of LED strip to 5V, 1500mA
  FastLED.setBrightness(50);
  FastLED.clear();
  FastLED.show();

}

void loop() {
uint8_t thisSpeed = 10;
    uint8_t deltaHue= 10;
    uint8_t thisHue = beat8(thisSpeed,255); 
    fill_rainbow(leds, NUM_LEDS, thisHue, deltaHue);            
    FastLED.show();
  delay(10); // this speeds up the simulation
}