#include "HX711.h"

// Konfigurasi pin HX711
const int pinDOUT = 2;
const int pinSCK = 4;

// Konfigurasi pin Buzzer
const int buzzerPin = 5;

// Konfigurasi batas berat untuk alarm
const float batas = 36.0;
HX711 scale;

// Konfigurasi LCD
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
Serial.begin(115200);
  scale.begin(pinDOUT, pinSCK);
  scale.set_scale(0.42);
  scale.tare();

  pinMode(buzzerPin, OUTPUT);
  digitalWrite(buzzerPin, LOW);

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

void loop() {
if (scale.is_ready()) {
    long reading = scale.get_units(3);
    float kg = float(reading) / 1000;
    Serial.print("Berat: ");
    Serial.print(kg, 2);
    Serial.println(" kg");

    if(kg > batas){
      digitalWrite(buzzerPin, HIGH);
      delay(5000);
      digitalWrite(buzzerPin, LOW);
    }

    lcd.setCursor(0,0);
    lcd.print("Timbangan Digital");
    lcd.setCursor(0,1);
    lcd.print("Berat: " + String(kg, 2) + "kg");
  }
  delay(5000); 
}