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

#define TRIG_PIN 7
#define ECHO_PIN 6
#define MAX_DISTANCE 400 //JARAK MAKSIMAL YANG DAPAT DIUKUR MENGGUNAKAN MISTAR YANG DIBUAT

LiquidCrystal_I2C lcd(0x27, 16, 2);
NewPing sonar(TRIG_PIN, ECHO_PIN, MAX_DISTANCE);

void setup(){
  lcd.begin(16,2);
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("Penggaris Auto");
  delay(2000);
  lcd.clear();
}

void loop(){
  int jarak = sonar.ping_cm();
  lcd.setCursor(0, 0);
  lcd.print("Jarak: ");
    if (jarak>0){
      lcd.print(jarak);
      lcd.print("cm");
    }else{
      lcd.print("----");
    }
    delay(500);
}