// Verkehrsampel
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

int green = 10; // Grüne LED
int yellow = 11; // Gelbe LED
int red = 12; // Rote LED

void setup() {
  // put your setup code here, to run once:
  pinMode(green, OUTPUT);
  pinMode(yellow, OUTPUT);
  pinMode(red, OUTPUT);
  Serial.begin(9600); // =Baudrate, bits per second
  lcd.init();
  lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  lcd.clear();
  lcd.setCursor(5,0);
  lcd.print("Stopp!");
  Serial.println("Stopp!");

  digitalWrite(red, HIGH);
  delay(4000);

  lcd.setCursor(4,1);
  lcd.print("Achtung");
  Serial.println("Achtung");

  digitalWrite(yellow, HIGH);
  delay(2000);  

  lcd.clear();
  lcd.setCursor(2,0);
  lcd.print("Los Los Los!");
  Serial.println("Los Los Los!");

  digitalWrite(red, LOW);
  digitalWrite(yellow, LOW);
  digitalWrite(green, HIGH);
  delay(3000);

  // Grün Blinken Phase
  lcd.setCursor(1,1);
  lcd.print("Jetzt schnell!");
  Serial.println("Jetzt schnell!");

  for (int i = 0; i < 4; i++) {
    digitalWrite(green, LOW);
    delay(500);
    digitalWrite(green, HIGH);
    delay(500);
  }
  digitalWrite(green, LOW);

  lcd.clear();
  lcd.setCursor(4,1);
  lcd.print("Achtung");
  Serial.println("Achtung");
  
  digitalWrite(yellow, HIGH);
  delay(2000);
  digitalWrite(yellow, LOW);

  Serial.println("Alles im grünen Bereich");
  Serial.println("Achtung, Wert im gelben Bereich");
  Serial.println("Warnung, kritischen Bereich erreicht");
}