const int sensorPin=A0;
const float baselineTemp=10; // on open air condition

void setup()
{
  Serial.begin(9600);

  // Setting up the mode of pin using for loop

  for (int pinNumber=3; pinNumber<6; pinNumber++)
  {
    pinMode(pinNumber, OUTPUT);
    digitalWrite(pinNumber, LOW);
  }

}

void loop()
{
  // Reading the temperature value from temperature sensor(TMP36) via A0 pin
  int sensorValue=analogRead(sensorPin);

  Serial.print("Sensor Value: ");
  Serial.print(sensorValue);


  // Converting the ADC readings into their corresponding voltage

  float voltage=(sensorValue/1024.0)*5.0;

  Serial.print(", Volts: ");
  Serial.print(voltage);


  // Coverting voltage into their corresponding Temperature in degree celcius

  float temperature=(voltage-0.5)*100.0;

  Serial.print(", °C: ");
  Serial.println(temperature);


if (temperature < baselineTemp) {
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
}
else if (temperature >= baselineTemp && temperature < baselineTemp + 20.0) {
  digitalWrite(3, HIGH);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
}
else if (temperature >= baselineTemp + 20.0 && temperature < 80.0) {
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(5, LOW);
}

else if (temperature >=80) {
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(5, HIGH);
}




}