const float BETA = 3950;
void setup() {
  // put your setup code here, to run once:
  
  Serial.begin(9600);
}
void loop() {
  // put your main code here, to run repeatedly:
  int sensorReading=analogRead(A4);


int celsius = 1 / (log(1 / (1023. / sensorReading - 1)) / BETA + 1.0 / 298.15) - 273.15;
Serial.print(celsius);
Serial.println(" c");

delay(500);


}