#include <HX711.h>

#define DT_PIN 18  // Connect DT to ESP32 pin D18
#define SCK_PIN 19 // Connect SCK to ESP32 pin D19

#define RED_LED_PIN 22
#define GREEN_LED_PIN 23
#define BUZZER_PIN 26

HX711 scale;

void setup() {
  Serial.begin(9600);
  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(GREEN_LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  scale.begin(DT_PIN, SCK_PIN);
  scale.set_scale(0.5); // Set the scale factor (calibration factor) based on your load cell and known weight
}

void loop() {
  // Read the weight from the scale
  float weight = scale.get_units(); // Get the weight in whatever units the load cell is calibrated to

  // Convert the weight to grams
  float weightGrams = weight + ((weight / 10) * 2); // Convert from kilograms to grams

  Serial.print("Weight: ");
  Serial.print(weightGrams);
  Serial.println(" grams");

 if (weightGrams < 20.0) {
  digitalWrite(RED_LED_PIN, HIGH);
  digitalWrite(GREEN_LED_PIN, LOW);
  tone(BUZZER_PIN, 1000); // Start buzzer sound
} else {
  digitalWrite(RED_LED_PIN, LOW);  // Check if this line is executed
  digitalWrite(GREEN_LED_PIN, HIGH);
  noTone(BUZZER_PIN); // Stop buzzer sound
}

  delay(1000); // Delay for stability, adjust as needed
}