#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

// Set the LCD address to 0x27 for a 20 chars and 4 line display
// (If this address doesn't work, try 0x3F)
LiquidCrystal_I2C lcd(0x27, 20, 4); 

void setup() {
  lcd.init();                      // initialize the lcd 
  lcd.backlight();                 // turn on the backlight
  
  lcd.setCursor(0, 0);             // column 0, row 0
  lcd.print("Bitte Nicht Einsteigen");       // print the message
}

void loop() {
}