#include <Wire.h> //preinstalled - nothing to do
#include <LiquidCrystal_I2C.h> 
// LiquidCrystal_I2C by Martin Kubovcik

// I2C Adresse meist 0x27 oder 0x3F
LiquidCrystal_I2C lcd(0x27, 16, 2);

//Verbindung:
//GND to GND
//VCC to 5V
//SDA to A4
//SCL to A5

byte smiley[8] = {
  B00000,
  B01010,
  B00000,
  B00000,
  B10001,
  B01110,
  B00000,
  B00000
};

void setup() {
  lcd.init();          // LCD initialisieren
  lcd.backlight();     // Hintergrundbeleuchtung einschalten

  lcd.begin(16, 2);    // 16 Zeichen, 2 Zeilen
  delay(100);
  
  lcd.print("Hello, Wokwi");
}

void loop() {

  lcd.setCursor(5, 1);
  lcd.print("HTL 10");

  //Smiley anzeigen 
  lcd.createChar(0, smiley);
  lcd.setCursor(0,1);
  lcd.write(byte(0));
  
}