#include <Adafruit_NeoPixel.h>

#define PIN 6
#define NUM_PIXELS 64
#define BRIGHTNESS 10

Adafruit_NeoPixel pixels(NUM_PIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pixels.begin();                        // Einschalten der LEDs.
  pixels.setBrightness(BRIGHTNESS);  // Einstellen der Helligkeit der LEDs.
  pixels.clear();                        // Schaltet alle LEDs aus.
  pixels.show();                         // Ausführung der vorherigen Befehle.
}

void loop() {
  for (int i=0; i<NUM_PIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(255,0, 0));
    pixels.show();
    delay(30);
  }
  for (int i=NUM_PIXELS; i>=0; i--) {
    pixels.setPixelColor(i, pixels.Color(0, 128, 64));
    pixels.show();
    delay(30);
  }
}