void setup() 
  {
  // put your setup code here, to run once:
  pinMode(32,OUTPUT);
  pinMode(21, OUTPUT);
}
void loop()
{
  digitalWrite(32,LOW);
  delay(10000);
  digitalWrite(21,LOW);
  tone(21,500,10000);
  digitalWrite(32,HIGH);
  delay(10000);
  digitalWrite(21,HIGH);
  
}