#define LDR_PIN 4 
#define ECHO_PIN 14 
#define TRIG_PIN 12
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);



void setup() {
  // put your setup code here, to run once:
  pinMode(LDR_PIN, INPUT);   
  pinMode(TRIG_PIN, OUTPUT);   
  pinMode(ECHO_PIN, INPUT);  
  Serial.begin(115200);

  lcd.init();
  lcd.clear();
  lcd.backlight();
}

void loop() {
  lcd.clear();
  // put your main code here, to run repeatedly:
   // this speeds up the simulation
    lcd.setCursor(0,0);   
    if (digitalRead(LDR_PIN) == LOW) { 
   lcd.print("Cahaya : Terang"); 
} else { 
   lcd.print("Cahaya : Gelap"); 
} 

// Clear the condition 
digitalWrite(TRIG_PIN, LOW); 
delayMicroseconds(10); 

// Generate ultrasonic signal 
digitalWrite(TRIG_PIN, HIGH); 
delayMicroseconds(10); 
digitalWrite(TRIG_PIN, LOW); 

// Read ultrasonic signal 
int duration = pulseIn(ECHO_PIN, HIGH); 
// Calculating the distance 
float distance = duration * 0.034 / 2; 
lcd.setCursor(0,1);
lcd.print(distance);
delay(1700);
}