#include "HX711.h"

#define DOUT  3
#define CLK  2

HX711 scale;

float calibration_factor = 420; //Hasil Kalibrasi
float units;

void setup()
{
  Serial.begin(9600);
  scale.begin(DOUT, CLK);
  scale.set_scale();
  scale.tare();  //Reset the scale to 0

  long zero_factor = scale.read_average(); //Get a baseline reading
  Serial.print("Zero factor: "); //This can be used to rem need to tare the scale. Useful in permanent scale projects.
  Serial.println(zero_factor);
}

void loop()
{
  scale.set_scale(calibration_factor); //Adjust to this calibration factor
  units = scale.get_units(), 1;
  if (units < 0)
  {
    units = 0.00;
  }
  Serial.print("Berat: ");
  Serial.print(units);
  Serial.print(" Gram");
  Serial.print("          Calibration_factor: ");
  Serial.print(calibration_factor);
  Serial.println();
  delay(1000);


   if(Serial.available())
  {
    char temp = Serial.read();
    if(temp == '+' || temp == 'a')
      calibration_factor += 10;
    else if(temp == '-' || temp == 'z')
      calibration_factor -= 10;
  }
}