Arduino devresine potansiyometre nasıl eklenir?

#include <Keypad.h>

int motorPin1 = 5;
int motorPin2 = 6;
int motorSpeed = 0;
int potPin = A0;

const byte ROWS = 2;
const byte COLS = 1;
char hexaKeys[ROWS][COLS] = {{'2'}, {'1'}};

byte rowPins[ROWS] = {3, 2};
byte colPins[COLS] = {4};

Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

void setup()
{
  Serial.begin(9600);
}

void loop()
{
  char customKey = customKeypad.getKey();
 
  switch (customKey)
  {
    case '1':
      Serial.println("Rotates To Left");
      rotateLeft();
      break;
   
    case '2':
      Serial.println("Rotates To Right");
      rotateRight();
      break;
    int motorSpeed = 0;
   
     motorSpeed = map(potValue, 0, 1023, 0, 255);
  }
 
  int potValue = analogRead(potPin);
  motorSpeed = map(potValue, 0, 1023, 0, 255);
  analogWrite(motorPin1, motorSpeed);
  analogWrite(motorPin2, motorSpeed);
}

void rotateLeft()
{
  digitalWrite(motorPin1, HIGH);
  digitalWrite(motorPin2, LOW);
}

void rotateRight(){
  digitalWrite(motorPin2, HIGH);
  digitalWrite(motorPin1, LOW);
}