int p=0;
void setup() {
  // put your setup code here, to run once:
  pinMode(2,INPUT);
  pinMode(13, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  p=digitalRead(2);
  if (p <=5)
  {
    digitalWrite(13, HIGH);
  }
  else
  {
    digitalWrite(13, LOW);
  }
}