int sensor = 2;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  

}
int BETA = 3950;
void loop() {
  // put your main code here, to run repeatedly:
  int value = analogRead(A1);
   float celsius = 1 / (log(1 / (1023. / value - 1)) / BETA + 1.0 / 298.15) - 273.15;
   Serial.println(celsius);
}