Heart beat badge

int PulseSensorPurplePin = 0;       
int LED = 12;   


int Signal;                
int Threshold = 550;            
// The SetUp Function:
void setup() {
  pinMode(LED,OUTPUT);       
   Serial.begin(9600);         
}

// The Main Loop Function
void loop() {

  Signal = analogRead(PulseSensorPurplePin);  
                                              
   Serial.println(Signal);                    


   if(Signal > Threshold){                         
     digitalWrite(LED,HIGH);
   } else {
     digitalWrite(LED,LOW);               
   }


delay(10);


}