#include <LiquidCrystal_I2C.h>
#include <HX711.h>
#include <Wire.h>
#include <ESP32Servo.h>

int ledPin = 16;
int buzzerPin = 5;
const int LdCell_D_PIN = 13;
const int LdCell_SCK_PIN = 18;
const int servoPin = 2; // Pin servo yang digunakan
HX711 scale;
LiquidCrystal_I2C lcd(0x27, 20, 4);
Servo myservo;

void setup() {
  Serial.begin(57600);
  scale.begin(LdCell_D_PIN, LdCell_SCK_PIN);
  scale.set_scale(5);
  scale.tare();

  lcd.init();
  lcd.backlight();
  pinMode(ledPin, OUTPUT); // Set LED pin as output
  myservo.attach(15); // Menghubungkan servo pada pin yang ditentukan
}

void loop() {
  float berat = scale.read();
  long reading = scale.get_units(3);
    float kg = float(reading) / 84;
  lcd.setCursor(0, 0);
  lcd.print("---> BERAT <---");
  lcd.setCursor(2, 1);
  lcd.print("Berat: " + String(kg, 2) + "kg");
  lcd.println(" kg ");

if (berat >= 50) {
    tone(buzzerPin, 700);
    digitalWrite(ledPin, HIGH); // Turn on the LED
    myservo.write(90); // Menggerakkan servo ke posisi tengah (90 derajat)
    delay(1000);
    noTone(buzzerPin);
    digitalWrite(ledPin, LOW); // Turn off the LED
    myservo.write(90); // Menggerakkan servo ke posisi maksimum (90 derajat)
  }
  else {
    digitalWrite(ledPin, LOW); // Turn off the LED
    myservo.write(0); // Menggerakkan servo ke posisi awal (0 derajat)
  }
  
  delay(1000);
}