DC Motor Control With Arduino

https://www.youtube.com/watch?v=7bThJ-sm2eU

const int potPin = A0;
const int fwdbuttonPin = 13;
const int bckbuttonPin = 12;
const int pin1 = 11;
const int pin2 = 10;

int potValue = 0;
int motorValue = 0;
int fwdbuttonState = 0;
int bckbuttonState = 0;

void setup()
{

 pinMode(fwdbuttonPin, INPUT_PULLUP);
 pinMode(bckbuttonPin, INPUT_PULLUP);
 pinMode (pin1, OUTPUT);
 pinMode (pin2, OUTPUT);

}

void loop()
{

 potValue = analogRead(potPin); 
 motorValue = map(potValue, 0, 1023, 0, 255);
 fwdbuttonState = digitalRead(fwdbuttonPin);
 bckbuttonState = digitalRead(bckbuttonPin);

 if (fwdbuttonState == LOW)
  {
 
   analogWrite(pin1, motorValue);
   digitalWrite (pin2, LOW); 
   
  }

 else if (bckbuttonState == LOW) 
  {
 
   analogWrite(pin2, motorValue);
   digitalWrite (pin1, LOW);
   
  }
 
  else
  {
 
   digitalWrite (pin1, LOW);
   digitalWrite (pin2, LOW); 

  }
 
}