#include <Wire.h>

#include <LiquidCrystal_I2C.h> // Vorher hinzugefügte LiquidCrystal_I2C Bibliothek hochladen
LiquidCrystal_I2C lcd1(0x27, 20, 4); 


int taster=12;
int tasterstatus=0; 

void setup() {
  Wire.begin();
  Serial.begin(115200);
  Serial.println("\nI2C Scanner");

  pinMode(taster, INPUT);
  lcd1.init(); //Im Setup wird das LCD2 gestartet
  lcd1.backlight();
}
 
void loop() {
  byte error, address;
  int nDevices;
  Serial.println("Scanning...");
  nDevices = 0;
  for(address = 1; address < 127; address++ ) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    if (error == 0) {
      Serial.print("I2C device found at address 0x");
      if (address<16) {
        Serial.print("0");
      }
      Serial.println(address,HEX);
      nDevices++;
    }
    else if (error==4) {
      Serial.print("Unknow error at address 0x");
      if (address<16) {
        Serial.print("0");
      }
      Serial.println(address,HEX);
    }    
  }
  if (nDevices == 0) {
    Serial.println("No I2C devices found\n");
  }
  else {
    Serial.println("done\n");
  }
  delay(2000);     

lcd1.setCursor(3,0); 
lcd1.print("Gluehwein");

lcd1.setCursor(3,1); 
lcd1.print("Gluehwein+");

lcd1.setCursor(3,2); 
lcd1.print("Kakao");

lcd1.setCursor(3,3); 
lcd1.print("Schneemann");


tasterstatus=digitalRead(taster); 
if (tasterstatus == HIGH)
{ 
  //digitalWrite(LEDblau, HIGH); 
  delay (500); 

  } //Programmabschnitt des IF-Befehls schließen.
else //...ansonsten...
  { //Programmabschnitt des else-Befehls öffnen.
    //digitalWrite(LEDblau, LOW); //...soll die LED aus sein.
  } 


}