int led = 11;
int pot = A0;

int potValue = 0;
int mpotValue = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(led, OUTPUT);
  pinMode(pot, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  potValue = analogRead(pot);

  mpotValue = map(potValue, 0, 1023, 0, 255);
  analogWrite(led, mpotValue);

}