#include "HX711.h"
#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4
#define relay1 6
#define relay2 7
#define button1 8
#define button2 9 

// int tombolState = LOW;   // Status tombol (LOW = mati, HIGH = hidup)
// int lastButtonState = LOW;
// unsigned long lastDebounceTime = 0;
// unsigned long debounceDelay = 50; 
float calibration_factor = 420;
float GRAM;
float KG;
float batas1 = 50;
float batas2 = 50;
bool relay1Status = false; // Status relay (mati)
bool relay2Status = false;
bool relay1Dihidupkan = false;
bool relay2Dihidupkan = false;

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

HX711 scale;
HX711 scale2;

void setup() {
  Serial.begin(9600);
  Serial.println("Initializing the scale");
  pinMode(relay1, OUTPUT);
  pinMode(relay2, OUTPUT);
  pinMode(button1, INPUT_PULLUP);
  pinMode(button2, INPUT_PULLUP);
  scale.begin(A1, A2);
  scale2.begin(2,3);
  scale.set_scale();
  scale.tare();
  scale2.set_scale();
  scale2.tare();
  lcd.init();
  lcd.backlight();
}

void loop() {

  scale.set_scale(calibration_factor);
  scale2.set_scale(calibration_factor);
  GRAM = scale.get_units(), 4;
  KG = scale2.get_units(), 4;
  int btn1 = digitalRead(button1);
  int btn2 = digitalRead(button2);
    Serial.print("berat 1 = ");
    Serial.print(GRAM);
    Serial.println(" Kg");
    lcd.setCursor(0, 0);
    lcd.print("berat1 = ");
    lcd.print(GRAM);
    lcd.print(" Kg");
    Serial.print("berat 2 = ");
    Serial.print(KG);
    Serial.println(" Kg");
    lcd.setCursor(0, 1);
    lcd.print("berat2 = ");
    lcd.print(KG);
    lcd.print(" Kg");
    delay(1000);
  //Serial.println(btn1);
  if(btn1 == 0 ){
    relay1Status = true;
    relay2Status = true;
    digitalWrite(relay1, HIGH);
    digitalWrite(relay2, HIGH);
    relay1Dihidupkan = false;
    relay2Dihidupkan = false;
  }
  if(btn2==0 ){
    relay1Status = false;
    relay2Status = false;
    digitalWrite(relay1, LOW);
    digitalWrite(relay2, LOW);
    relay1Dihidupkan = false;
    relay2Dihidupkan = false;
  }
  if(GRAM >= 50 ){
    relay1Status = false;
    digitalWrite(relay1, LOW);
  }
  if(KG >= 50 ){
    relay2Status = false;
    digitalWrite(relay2, LOW);
  }
}