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

LiquidCrystal_I2C lcd (0x27, 16, 2);

int hijau=13;
int kuning=12;
int merah=11;
int hijau2=10;
int kuning2=9;
int merah2=8;
int hijau3=7;
int kuning3=6;
int merah3=5;
int hijau4=4;
int kuning4=3;
int merah4=2;

unsigned long previousMillis=0;
const long interval=500;
bool ledState=LOW;

void setup() { 

lcd.begin (16,2);
lcd.backlight();
lcd.setCursor(4,1);
lcd.print("ABILLUCU");
lcd.setCursor(4,0);
lcd.print("ABILLUCU");

pinMode(hijau,OUTPUT);
pinMode(kuning,OUTPUT);
pinMode(merah,OUTPUT);
pinMode(hijau2,OUTPUT);
pinMode(kuning2,OUTPUT);
pinMode(merah2,OUTPUT);
pinMode(hijau3,OUTPUT);
pinMode(kuning3,OUTPUT);
pinMode(merah3,OUTPUT);
pinMode(hijau4,OUTPUT);
pinMode(kuning4,OUTPUT);
pinMode(merah4,OUTPUT);

digitalWrite(hijau, HIGH);
digitalWrite(kuning,HIGH);
digitalWrite(merah,HIGH);
digitalWrite(hijau2,HIGH);
digitalWrite(kuning2,HIGH);
digitalWrite(merah2,HIGH);
digitalWrite(hijau3,HIGH);
digitalWrite(kuning3,HIGH);
digitalWrite(merah3,HIGH);
digitalWrite(hijau4,HIGH);
digitalWrite(kuning4,HIGH);
digitalWrite(merah4,HIGH);
delay(2000); 

digitalWrite(hijau,LOW);
digitalWrite(kuning,LOW);
digitalWrite(merah,LOW);
digitalWrite(hijau2,LOW);
digitalWrite(kuning2,LOW);
digitalWrite(merah2,LOW);
digitalWrite(hijau3,LOW);
digitalWrite(kuning3,LOW);
digitalWrite(merah3,LOW);
digitalWrite(hijau4,LOW);
digitalWrite(kuning4,LOW);
digitalWrite(merah4,LOW);
}

void loop() {

unsigned long currentmillis=millis();

if (currentmillis - previousMillis >= interval) {
previousMillis = currentmillis;
ledState = !ledState;
digitalWrite(kuning2, ledState);
digitalWrite(kuning4, ledState);
}
digitalWrite(hijau, LOW);
digitalWrite(merah3, LOW);
digitalWrite(kuning3, LOW);
digitalWrite(kuning, LOW);
digitalWrite(hijau3, HIGH);
digitalWrite(merah, HIGH);
delaynonblocking(6000);
digitalWrite(kuning, HIGH);
digitalWrite(kuning3, HIGH);
delaynonblocking(2000);
digitalWrite(merah, LOW);
digitalWrite(hijau3, LOW);
digitalWrite(kuning,LOW);
digitalWrite(kuning3, LOW);
digitalWrite(hijau, HIGH);
digitalWrite(merah3, HIGH);
delaynonblocking(6000);
digitalWrite(kuning3, HIGH);
digitalWrite(kuning, HIGH);
delaynonblocking(2000);

}

void delaynonblocking(unsigned long delayTime) {
unsigned long start = millis();
while (millis() - start < delayTime) {
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis;
ledState = !ledState;
digitalWrite(kuning2, ledState);
digitalWrite(kuning4, ledState);
}
}
}