LM35.ino

//Hugo Zeng
//2016/09/19
//[email protected]

int ledPin = 13; 

void setup() { 
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}

void loop() { 
  int LM35value;       //LM35 value form A0
  double LM35Temp;     //temp = value * (5/10.24)

  
  LM35value = analogRead(0);  
  LM35Temp  = (double) LM35value * (5/10.24);  
  

  //Temp >25, LED Lights up
  if(LM35Temp>25){
    digitalWrite(ledPin,HIGH);
    delay(2000);
  }else{
    digitalWrite(ledPin, LOW);
    delay(2000);
  }

  //console temp every 3 second;         
  Serial.print("temperature: ");
  Serial.print(LM35Temp);
  Serial.println("C");
  delay(3000);                


}