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

LiquidCrystal_I2C lcd(0x27,16,2);

#define trig 9
#define echo 8

long durasi, jarak;
int countObj = 0;
bool terdeteksi = false;

void setup(){
  lcd.init();
  lcd.backlight();
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);

}

void loop(){
  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);

  durasi = pulseIn(echo, HIGH);
  jarak = durasi*0.034/2;

  if (jarak < 10&& !terdeteksi){
    countObj++;
    terdeteksi = true;
  }

  if (jarak > 15) {
    terdeteksi = false;
  }

  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Count:");
  lcd.print(countObj);

  delay(100);
}