#include <HX711.h>
#include <LiquidCrystal_I2C.h>
#include "RTClib.h"

RTC_DS1307 rtc;

#define LOADCELL_DOUT_PIN  12
#define LOADCELL_SCK_PIN  11

#define MAX_WEIGHT 3.5

#define LED_PIN 7

LiquidCrystal_I2C lcd(0x27, 16, 2);
HX711 weight;

void setup() {
  lcd.begin(16, 2);
  lcd.init();
  lcd.backlight();
  lcd.print("Weight:");

  pinMode(LED_PIN, OUTPUT);

  weight.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);

  Serial.begin(115200);

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

}

void loop() {
  float current_weight = weight.get_units() / 420.000;
  lcd.setCursor(0, 1);
  lcd.print(current_weight);
  lcd.print("kg");
  DateTime now = rtc.now();
  lcd.print(String(now.hour())+':'+String(now.minute())+':'+String(now.second()));

  delay(500);
}