#include <Arduino.h>
#include <HX711.h>

#define DT 4
#define SCK 5

HX711 scale;
float calibration_factor = 8350;

// LED
#define LED_HABIS 16
#define LED_HAMPIR 17
#define LED_FULL 18

void setup() {
  Serial.begin(115200);
  delay(500);

  scale.begin(DT, SCK);

  if (!scale.is_ready()) {
    Serial.println("HX711 tidak terdeteksi!");
    while (1);
  }

  scale.set_scale(calibration_factor);
  scale.tare();

  pinMode(LED_HABIS, OUTPUT);
  pinMode(LED_HAMPIR, OUTPUT);
  pinMode(LED_FULL, OUTPUT);

  Serial.println("Monitoring Berat Air...");
}

void loop() {

  if (!scale.is_ready()) {
    Serial.println("HX711 tidak siap!");
    return;
  }

  float berat = scale.get_units(15);

  if (berat < 0) berat = 0;

  // Serial.print("Berat Sekarang: ");
  Serial.print(berat, 2);
  Serial.println(" kg");

  // Semua LED mati dulu
  digitalWrite(LED_HABIS, LOW);
  digitalWrite(LED_HAMPIR, LOW);
  digitalWrite(LED_FULL, LOW);

  // LED nyala sesuai berat asli
  if (berat < 0.01) {
    digitalWrite(LED_HABIS, HIGH);
    Serial.println("Air habis!!");
  }
  else if (berat < 0.04) {
    digitalWrite(LED_HAMPIR, HIGH);
    Serial.println("Air sedang terpakai");
  }
  else {
    digitalWrite(LED_FULL, HIGH);
    Serial.println("Air masih Full");
  }

  Serial.println("--------------------");

  delay(1000);
}