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

  

}

void loop() {
  const float BETA = int(3950);
  // put your main code here, to run repeatedly:
  int analogValue = analogRead(A0);
  float celcius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  Serial.print("Temperature: "); 
  Serial.print(celcius);
  Serial.println(" C");
  delay(3000);
}