#include <LiquidCrystal_I2C.h> // import lcd
LiquidCrystal_I2C lcd(0x27, 16, 2); // deklarasi lcd

void setup() {
  // deklarasi lcd agar bisa menyala
  lcd.init();
  Serial.begin(9600);
  lcd.backlight();
  lcd.setBacklight(HIGH);

  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(3, HIGH);
  lcd.print("GREEN IS ON");
  delay(10000);
  lcd.clear();
  digitalWrite(3, LOW);
  lcd.print("GREEN IS OFF");

  lcd.clear();
  digitalWrite(4, HIGH);
  lcd.print("YELLOW IS ON");
  delay(5000);
  lcd.clear();
  digitalWrite(4, LOW);
  lcd.print("YELLOW IS OFF");

  lcd.clear();
  digitalWrite(5, HIGH);
  lcd.print("RED IS ON");
  delay(15000);

  lcd.clear();
  digitalWrite(4, HIGH);
  lcd.print("YELLOW IS ON");
  delay(5000);

  lcd.clear();
  digitalWrite(5, LOW);
  lcd.print("RED IS OFF");

  lcd.clear();
  digitalWrite(4, LOW);
  lcd.print("YELLOW IS OFF");
  lcd.clear();
}