#include <LiquidCrystal.h>
LiquidCrystal lcd(2, 3, 4, 5, 6, 7);
const int pinSensor = 8;
const int pinReset = 9;
int hitung = 0;
int kondisi1 = 0;
int status1;

void setup()
{

 pinMode(pinReset, INPUT);
 digitalWrite(pinReset, HIGH);

pinMode(pinSensor, INPUT);
 lcd.begin(16, 2);
 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print("Alat Penghitung");
 lcd.setCursor(0, 1);
 lcd.print("Jumlah Barang ...");
 delay(1000);
 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print("Ready ... ");
 delay(1000);
}

void loop()
{

 hitung = constrain(hitung, 0, 10);
 status1 = digitalRead(pinSensor);
 if (status1 == HIGH)
 {
 hitung = hitung;
 kondisi1 = 0;
 }

 else if (status1 == LOW && kondisi1 == 0)
 {
 hitung += 1;
 kondisi1 = 1;
 }
 else if (status1 == LOW && kondisi1 == 1)
 {
 hitung = hitung;
 kondisi1 = 1;
 }
 if (digitalRead(pinReset) == LOW)
 {
 hitung = 0;
 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print("RESET Aktif ...");
 delay(1000);
 }

 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print("Jumlah Barang : ");
 lcd.setCursor(0, 1);
 lcd.print(hitung);
 delay(300); 
}