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

HX711 scale;

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

const float scc = 2.38095;
const int tbtn = 2;
float tval = 0;
int i = 0;


void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(tbtn, INPUT_PULLUP);
  scale.begin(A1, A0);
  lcd.setCursor(0, 0);
  lcd.print("wkwkwkwk");
  delay(1000);
  lcd.clear();
}

void loop() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(scale.get_units()*scc, 0);
  lcd.print(" Grams");
  if (digitalRead(tbtn) == LOW) {
    while (i < 1) {
      tval = scale.get_units()*scc;
      i++;
    }
    lcd.setCursor(0, 1);
    lcd.print(-tval+scale.get_units()*scc, 0);
    lcd.print(" TEAR");
  } else {
    i = 0;
  }
  delay(250);
}