#include "FastLED.h"
#define NUM_LEDS 16
CRGB leds[NUM_LEDS];
CRGB leds2[NUM_LEDS];
#define PIN 6
#define PIN2 7

void setup()
{
  FastLED.addLeds<WS2811, PIN, GRB>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
  FastLED.addLeds<WS2811, PIN2, GRB>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
  FastLED.setBrightness(175);
}

void loop()
{
          for(int dot = -1; dot < NUM_LEDS; dot++)
	{
            leds[dot+2] = CRGB::White;
            FastLED.show();
            // clear this led for the next time around the loop
            leds[dot] = CRGB::Black;
            delay(75);
    }
}

void showStrip()
{
 #ifdef ADAFRUIT_NEOPIXEL_H
   // NeoPixel
   strip.show();
 #endif
 #ifndef ADAFRUIT_NEOPIXEL_H
   // FastLED
   FastLED.show();
 #endif
}

void setPixel(int Pixel, byte red, byte green, byte blue)
{
 #ifdef ADAFRUIT_NEOPIXEL_H
   // NeoPixel
   strip.setPixelColor(Pixel, strip.Color(red, green, blue));
 #endif
 #ifndef ADAFRUIT_NEOPIXEL_H
   // FastLED
   leds[Pixel].r = red;
   leds[Pixel].g = green;
   leds[Pixel].b = blue;
 #endif
}

void setAll(byte red, byte green, byte blue)
{
  for(int i = 0; i < NUM_LEDS; i++ )
	{
    setPixel(i, red, green, blue);
	}
  showStrip();
}