#include "HX711.h"

// Pet food bowl weight
float calibrate = 5000.0/2100.0;
const int LOADCELL_DOUT_PIN = 13;
const int LOADCELL_SCK_PIN = 12;

HX711 scale;

void setup() 
{
  Serial.begin(9600);
  delay(500);
  pinMode(19, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(23, OUTPUT);

  scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
  scale.tare(); // Reset scale
}

void loop() 
{
  // Read food bowl weight value
    float Rawdata = scale.get_units();
    float weight = Rawdata * calibrate;

    // Check if weight is less than 1kg
    if (weight < 1000.0) {
        digitalWrite(19, LOW); // Turn on LED on pin 19
    } else {
        digitalWrite(19, HIGH); // Turn off LED
    }

    // Print weight (for debugging)
    Serial.print("Weight (grams): ");
    Serial.println(weight);
    delay(1000);
}