int crush = 13;  // output that crushes!
int crush_sensor = 2;    // trigger to crush!
int val = 0;      // variable to store the read value

void setup() {
  pinMode(crush, OUTPUT);  // sets the digital pin 13 as output
  pinMode(crush_sensor, INPUT);    // sets the digital pin 7 as input
}

void loop() {
  crush_sense = digitalRead(crush_sensor;   // read the input pin

  if (crush_sense == HIGH || crush_done == LOW) {
    digitalWrite(crush, 1);
    delay(100);
    digitalWrite(crush, 0);
  }

  if (crush_sense == HIGH || crush_done == HIGH) {
    digitalWrite(crush, 0);
    delay(100);
    digitalWrite(crush, 0);
  }

}