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    const int controlPin1 = 2;// the control pins will carry the 
    const int controlPin2 = 3;
    const int enablePin = 9; // attached to the pin EN
    const int directionSwitchPin = 4;// 4 and 5 carry the values 
    const int onOffSwitchStateSwitchPin = 5;
    const int potPin = A5; // analogic signal, because it is a 
    int onOffSwitchState = 0;
    int previousOnOffSwitchState = 0;
    int directionSwitchState = 0;
    int previousDirectionSwitchState = 0;

    int motorEnabled = 0;
    int motorSpeed = 0;
    int motorDirection = 1;

    void setup() {
      pinMode(directionSwitchPin,INPUT);
      pinMode(onOffSwitchStateSwitchPin,INPUT);
      pinMode(controlPin1,OUTPUT);
      pinMode(controlPin2,OUTPUT);
      pinMode(enablePin,OUTPUT);
      

      digitalWrite(enablePin,LOW);// the motor initializes at OFF
    }

    void loop() {
      onOffSwitchState = digitalRead(onOffSwitchStateSwitchPin);
      delay(1);
      directionSwitchState = digitalRead(directionSwitchPin);
      motorSpeed = analogRead(potPin)/4;

      if(onOffSwitchState != previousOnOffSwitchState){ // this 
        if(onOffSwitchState ==HIGH){ // if the user presses the 
          motorEnabled = !motorEnabled;
        }
      }
      if (directionSwitchState != previousDirectionSwitchState) { // analagous to OnOffSwitchState
        if (directionSwitchState == HIGH) {
          motorDirection = !motorDirection;
        }
      }
      if(motorDirection == 1){ // If the Direction is 1, turn left.
        digitalWrite(controlPin1, HIGH);
        digitalWrite(controlPin2, LOW);
      }
      else {  // If the Direction is 0, turn right.
        digitalWrite(controlPin1, LOW);
        digitalWrite(controlPin2, HIGH);
      }

      if(motorEnabled == 1) { // If the motor should be enabled, 
        analogWrite(enablePin, motorSpeed);
      }
      else {
        analogWrite(enablePin, 0); // If the motor is turned Off, 
      }
      
    }