int fcoeur = A0 ;
int vib = 2;
//double frequence = 0.0 ;
double demiperiode = 0.0 ;

void setup()
{
  Serial.begin (9600);
  pinMode( 2 , OUTPUT);
}

void loop()
{

 fcoeur =  analogRead(A0) ;
//frequence = ( fcoeur / 60 ) ;
demiperiode = ( 30000 / fcoeur ) ;

  digitalWrite(2 , HIGH);
  delay( demiperiode );

  digitalWrite(2 , LOW);
  delay(demiperiode);

 Serial.print ("fcoeur:");
 Serial.println (fcoeur);
// Serial.println (frequence);
 Serial.println (demiperiode);

 if (fcoeur >=120){
 for (int i=0 ; i<=9 ; i++){
  digitalWrite ( 2, HIGH);
  delay (demiperiode);

  digitalWrite (2, LOW);
  delay (demiperiode);
 }
// }  else {
//    if (fcoeur >=150){
//      digitalWrite (2, HIGH);
//      delay (demiperiode);
//
//      digitalWrite (2,LOW);
//      delay (demiperiode);
//    }
//  }


 }
}
}