#include <LiquidCrystal_I2C.h>
const int led=13;
const int bt=2;
#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
const float BETA = 3950; // should match the Beta Coefficient of the thermistor


void setup() {
   Serial.begin(9600);
  // Init
  pinMode(led, OUTPUT);
  pinMode(bt, INPUT_PULLUP);

  lcd.init();
  lcd.backlight();

  // Print something

}


void loop() { int analogValue = analogRead(A0);
  float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  Serial.print("Temperature: ");
  Serial.print(celsius);
  Serial.println(" ℃");
  delay(1000);
  float mais=1;
 int prog = digitalRead(bt);
 for (mais=1; prog == HIGH;mais= mais +1);{}
float temp =1 + mais; 
  lcd.setCursor(1, 1);
  lcd.print(celsius);
  lcd.setCursor(2,2);
  lcd.print(temp);
 if (celsius < temp ){digitalWrite(led, LOW);};
if (celsius >temp){digitalWrite(led, HIGH);};

}