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

// HX711 circuit wiring
const int LOADCELL_DOUT_PIN = A1;  // Data pin
const int LOADCELL_SCK_PIN = A2;   // Clock pin

HX711 scale;

// Initialize the LCD with its I2C address (0x27 or 0x3F are common)
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(9600);
  scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);

  // Calibrate the scale with a known weight. Replace "YOUR_CALIBRATION_FACTOR" with your factor.
  scale.set_scale(420.0);  // Replace with your calibration factor
  scale.tare();  // Reset the scale to 0

  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Weight: ");
}

void loop() {
  float weight = scale.get_units(10);  // Average 10 readings for accuracy

  // Display the weight on the LCD
  lcd.setCursor(0, 1);
  lcd.print("           ");  // Clear the second line
  lcd.setCursor(0, 1);
  lcd.print(weight, 2);  // Display weight with 2 decimal places
  lcd.print(" kg");

  delay(500);  // Update every half second
}