#include <Adafruit_NeoPixel.h>
    
    #define PIN_ONOFF 2
    #define PIN_FUNCTION1 3
    #define PIN_FUNCTION2 4
    #define PIN_LEDS 5
    #define NUM_LEDS 124
    
    Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN_LEDS, NEO_GRB + NEO_KHZ800);

    bool boolOnOff;
    int intColour;
  
    void setup() {
      Serial.begin(9600);
      boolOnOff = 1;
      intColour = 0;
      strip.begin();
      strip.show(); // Initialize all pixels to 'off'
      Serial.println("My Sketch has started");
    }


    
    void loop() {
 
      if (onOff(PIN_ONOFF,boolOnOff)) {
        setColour(PIN_FUNCTION1,intColour);
        Serial.println("ON");
      }
      else {
        Serial.println("OFF");
        setAll(0x00,0x00,0x00); 
      }
      showStrip();
    }


// Neopixel senden an Streifen

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


// Neopixel setze einzelnen Pixel

    void setPixel(int Pixel, byte red, byte green, byte blue) {
     #ifdef ADAFRUIT_NEOPIXEL_H
       // NeoPixel
       strip.setPixelColor(Pixel, strip.Color(red, green, blue));
     #endif
    }


// Neopixel setze ganzen Streifen

    void setAll(byte red, byte green, byte blue) {
      for(int i = 6; i < NUM_LEDS; i++ ) {
        setPixel(i, red, green, blue);
      }
    }


// Entstörung des Schaltsignal des Tasters durch Delay | Anmerkung an mich ggf. nur die abfallende Flanke abfragen? und/oder mit Flankenmerker statt Schleife arbeiten

    bool pressedKey (int keyIn) {           
      if (digitalRead(keyIn) == 1) {
       delay(500);
       if (digitalRead(keyIn) == 1) {
        while (digitalRead(keyIn) == 1) {
          delay(500);
        }
        return 1;
       }
       else {
        return 0;
       }
      }
      else {
        return 0; 
      }
    }


// Schaltet den LED-Streifen Ein und/oder Aus

    bool onOff(int pinOnOff, bool varOnOff) {
      if (pressedKey(pinOnOff)) {
        Serial.print("Pressed");
        Serial.println(pinOnOff);
        varOnOff = !varOnOff;
      }
      return varOnOff;
    }


//Setzt die Farbe des LED-Streifens

    void setColour(int pinSetColour, int varColour) {
      if (pressedKey(pinSetColour)) {
        if (varColour < 3) {
          varColour++;
        }
        else {
          varColour = 0;
        }
      }
      switch (varColour) {
        case 0: setAll(0xff,0xff,0xff);
                break;
        case 1: setAll(0xff,0x00,0x00);
                break;
        case 2: setAll(0x00,0xff,0x00);
                break;
        case 3: setAll(0x00,0x00,0xff);
                break;
        default:setAll(0x00,0x00,0x00);
      }
      
    }