#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);


const int lampuMerah1 = 2;
const int lampuKuning1 = 3;
const int lampuHijau1 = 4;

const int lampuMerah2 = 5;
const int lampuKuning2 = 6;
const int lampuHijau2 = 7;

const int lampuMerah3 = 8;
const int lampuKuning3 = 9;
const int lampuHijau3 = 10;

const int lampuMerah4 = 11;
const int lampuKuning4 = 12;
const int lampuHijau4 = 13;

const unsigned long waktuMerah = 3000; 
const unsigned long waktuKuning = 3000;
const unsigned long waktuHijau = 3000; 

void setup() {
  pinMode(lampuMerah1, OUTPUT);
  pinMode(lampuKuning1, OUTPUT);
  pinMode(lampuHijau1, OUTPUT);
  
  pinMode(lampuMerah2, OUTPUT);
  pinMode(lampuKuning2, OUTPUT);
  pinMode(lampuHijau2, OUTPUT);
  
  pinMode(lampuMerah3, OUTPUT);
  pinMode(lampuKuning3, OUTPUT);
  pinMode(lampuHijau3, OUTPUT);
  
  pinMode(lampuMerah4, OUTPUT);
  pinMode(lampuKuning4, OUTPUT);
  pinMode(lampuHijau4, OUTPUT);
   lcd.init();
  lcd.backlight();
  lcd.setCursor(1, 0);
}

void loop() {
  //(1)  - ATAS
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("SELAMAT JALAN!");
  digitalWrite(lampuMerah1, LOW);
  digitalWrite(lampuKuning1, LOW);
  digitalWrite(lampuHijau1, HIGH);








 lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah2,HIGH);
  digitalWrite(lampuKuning2, LOW);
  digitalWrite(lampuHijau2,LOW);
  //kanan

  digitalWrite(lampuMerah3, HIGH);
  digitalWrite(lampuKuning3, LOW);
  digitalWrite(lampuHijau3, LOW);
  //bawah
  
  digitalWrite(lampuMerah4, HIGH);
  digitalWrite(lampuKuning4, LOW);
  digitalWrite(lampuHijau4, LOW);
  //kiri

  delay(3000);
  
  //---------------------------------------------------------//
  // (2) - Lampu kuning, lampu merah lainnya
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("HATI-HATI!");
  digitalWrite(lampuMerah1, LOW);
  digitalWrite(lampuKuning1, HIGH);
  digitalWrite(lampuHijau1, LOW);
  //atas
  
   lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah2, HIGH);
  digitalWrite(lampuKuning2,LOW);
  digitalWrite(lampuHijau2, LOW);
  
  digitalWrite(lampuMerah3,HIGH);
  digitalWrite(lampuKuning3, LOW);
  digitalWrite(lampuHijau3,LOW);
  
  digitalWrite(lampuMerah4, HIGH);
  digitalWrite(lampuKuning4, LOW);
  digitalWrite(lampuHijau4, LOW);
  
  delay(3000);

  //-------------------------------------------------------//
  
  // (3) - Lampu hijau, lampu merah lainnya
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah1, HIGH);
  digitalWrite(lampuKuning1, LOW);
  digitalWrite(lampuHijau1, LOW);
  //atas
   lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("SELAMAT JALAN!");
  digitalWrite(lampuMerah2, LOW);
  digitalWrite(lampuKuning2,LOW);
  digitalWrite(lampuHijau2, HIGH);
  
  digitalWrite(lampuMerah3, HIGH);
  digitalWrite(lampuKuning3, LOW);
  digitalWrite(lampuHijau3, LOW);
  
  digitalWrite(lampuMerah4,HIGH);
  digitalWrite(lampuKuning4, LOW);
  digitalWrite(lampuHijau4, LOW);
  
  delay(3000);
  
  //---------------------------------------------------------//
  // (4) - Lampu hijau, lampu merah lainnya
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah1, HIGH);
  digitalWrite(lampuKuning1, LOW);
  digitalWrite(lampuHijau1, LOW);
  
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("HATI-HATI!");
  digitalWrite(lampuMerah2, LOW);
  digitalWrite(lampuKuning2,HIGH);
  digitalWrite(lampuHijau2, LOW);
  
  digitalWrite(lampuMerah3, HIGH);
  digitalWrite(lampuKuning3, LOW);
  digitalWrite(lampuHijau3, LOW);
  
  digitalWrite(lampuMerah4,HIGH);
  digitalWrite(lampuKuning4, LOW);
  digitalWrite(lampuHijau4, LOW);

  delay(3000);

  // (5) - Lampu hijau, lampu merah lainnya
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah1, HIGH);
  digitalWrite(lampuKuning1, LOW);
  digitalWrite(lampuHijau1, LOW);
  
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah2, HIGH);
  digitalWrite(lampuKuning2,LOW);
  digitalWrite(lampuHijau2, LOW);
  
  digitalWrite(lampuMerah3,LOW);
  digitalWrite(lampuKuning3, LOW);
  digitalWrite(lampuHijau3, HIGH);
  
  digitalWrite(lampuMerah4,HIGH);
  digitalWrite(lampuKuning4, LOW);
  digitalWrite(lampuHijau4, LOW);

  delay(3000);

  // (6) - Lampu hijau, lampu merah lainnya
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah1, HIGH);
  digitalWrite(lampuKuning1, LOW);
  digitalWrite(lampuHijau1, LOW);
  
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah2,HIGH);
  digitalWrite(lampuKuning2,LOW);
  digitalWrite(lampuHijau2, LOW);
  
  digitalWrite(lampuMerah3,LOW);
  digitalWrite(lampuKuning3, HIGH);
  digitalWrite(lampuHijau3, LOW);
  
  digitalWrite(lampuMerah4,HIGH);
  digitalWrite(lampuKuning4, LOW);
  digitalWrite(lampuHijau4, LOW);

  delay(3000);

  // (7) - Lampu hijau, lampu merah lainnya
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah1, HIGH);
  digitalWrite(lampuKuning1, LOW);
  digitalWrite(lampuHijau1, LOW);
  
  lcd.init();
  lcd.setCursor(0, 0);
  lcd.print("BERHENTI!");
  digitalWrite(lampuMerah2, HIGH);
  digitalWrite(lampuKuning2,LOW);
  digitalWrite(lampuHijau2, LOW);
  
  digitalWrite(lampuMerah3, HIGH);
  digitalWrite(lampuKuning3, LOW);
  digitalWrite(lampuHijau3, LOW);
  
  digitalWrite(lampuMerah4,LOW);
  digitalWrite(lampuKuning4, LOW);
  digitalWrite(lampuHijau4, HIGH);

  delay(3000);

  // (8) - Lampu hijau, lampu merah lainnya
 
  digitalWrite(lampuMerah1, HIGH);
  digitalWrite(lampuKuning1, LOW);
  digitalWrite(lampuHijau1, LOW);
  
  digitalWrite(lampuMerah2, LOW);
  digitalWrite(lampuKuning2,LOW);
  digitalWrite(lampuHijau2, HIGH);
  
  digitalWrite(lampuMerah3, HIGH);
  digitalWrite(lampuKuning3, LOW);
  digitalWrite(lampuHijau3, LOW);
  
  digitalWrite(lampuMerah4,LOW);
  digitalWrite(lampuKuning4, HIGH);
  digitalWrite(lampuHijau4, LOW);

  delay(3000);
}