void setup() {
  //Serial.begin (9600);
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  // put your setup code here, to run once:

}

void loop() {
  float celsius = 1 / (log(1 / (1023. /analogRead(A0)  -1 ))/ 3950 + 1.0 / 289.15) - 273.15;

  // Serial. print(celsius); 
  // Serial. println( "kraadi");
  // delay (1000);


  if ( celsius < 0 ) {digitalWrite(13, HIGH); digitalWrite(12, LOW);}
  if ( celsius > 40 ) {digitalWrite(12, HIGH); digitalWrite(13, LOW);}
  if (celsius >=0 && celsius <= 40 ) {digitalWrite(12, LOW); digitalWrite(13, LOW);}



 
}