#include "HX711.h"

// ---------- Pin Definitions ----------
#define HX711_DT   A1   // D1
#define HX711_SCK  A0   // D0

// ---------- HX711 Setup ----------
HX711 scale;
float calibration_factor = 2280.0f;

// ---------- Timing ----------
unsigned long lastRead = 0;
const unsigned long READ_INTERVAL = 200; // ms

// Turn this ON for debug text in Serial Monitor.
// Turn OFF for clean Plotter-only output.
#define DEBUG 0

void setup() {
  Serial.begin(115200);
  delay(300);

#if DEBUG
  Serial.println("Initializing HX711...");
#endif

  scale.begin(HX711_DT, HX711_SCK);
  scale.set_scale(calibration_factor);
  scale.tare();

#if DEBUG
  Serial.println("HX711 ready. Reading continuously...\n");
#endif
}

void loop() {
  unsigned long now = millis();
  if (now - lastRead >= READ_INTERVAL) {
    lastRead = now;

    if (scale.is_ready()) {
      float weight = scale.get_units(4);

#if DEBUG
      Serial.print("Weight (grams): ");
      Serial.println(weight);
#endif

      // ----- SERIAL PLOTTER SAFE -----
      // ONLY print the number — nothing else
      Serial.println(weight);

    } else {
#if DEBUG
      Serial.println("HX711 not ready");
#endif
      // Output zero so plotter line continues
      Serial.println(0);
    }
  }
}