int Light=11;
int buzzer =3;
int sensor= A4;
void setup() {
  Serial.begin(9600);

  pinMode(A4, INPUT);
  pinMode(11, OUTPUT);
  pinMode(3, OUTPUT);

  

}

void loop() {
   int analogvalue = analogRead(sensor);
  

  
  
float Celcius= 1/ (log(1 / (1023. /analogvalue - 1)) / 3950 + 1.0 / 298.15) -273.15;
  if(Celcius>38){
    tone(3, 100); 
  }
  else{
    noTone(3);
    int brightness =map(analogvalue,953,115,0,255);
    analogWrite(Light,brightness);
  }
  Serial.print("Temperature: ");
  Serial.print(Celcius);
  
  Serial.println(" °C");
  delay(1000);

  

}