#include <Adafruit_NeoPixel.h>

//---------------------------------------------------------------------
#define PIN_AUSGABE  9  /* GPIO an dem die NeoPixel angeschlossen sind.    */
#define ANZAHL_LED  30  /* Anzahl Neopixel die am GPIO angeschlossen sind. */

// NeoPixel-Objet erzeugen:
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(ANZAHL_LED, PIN_AUSGABE, NEO_GRB + NEO_KHZ800);

//---------------------------------------------------------------------
void setup()
{
  pixels.begin();
}

//---------------------------------------------------------------------
void loop()
{
  //****************************************
  // led_idex=0, r=100%, g=0%, b=0% -> ROT
  pixels.setPixelColor(0, 255, 0, 0);

  // led_idex=1, r=0%, g=100%, b=0% -> GRÜN
  pixels.setPixelColor(1, 0, 255, 0);

  // led_idex=2, r=0%, g=0%, b=100% -> BLAU
  pixels.setPixelColor(2, 0, 0, 255);

  // Buffer vom RAM in die NeoPixel schieben:
  pixels.show();

  // Pause 1000ms
  delay(1000);

  //****************************************
  // led_idex=0, r=0%, g=0%, b=0% -> SCHWARZ
  pixels.setPixelColor(0, 0, 0, 0);

  // led_idex=1, r=0%, g=0%, b=0% -> SCHWARZ
  pixels.setPixelColor(1, 0, 0, 0);

  // led_idex=2, r=0%, g=0%, b=0% -> SCHWARZ
  pixels.setPixelColor(2, 0, 0, 0);

  // Buffer vom RAM in die NeoPixel schieben:
  pixels.show();

  // Pause 1000ms
  delay(1000);
}