int sensor = 34;
int leitura = 0;
float BETA = 3950;
float temp = 0;

void setup() {
  Serial.begin(115200);
}

void loop() {
  leitura = analogRead(sensor);
  temp = 1/(log(1/(4095.0/leitura -1.0))/BETA +1.0/298.15) -273.15;
  Serial.print("Temperatura:");
  Serial.print(temp);
  Serial.print("°C");
  delay(1000);
}