#define pot A0
#define led 11
void setup()
{
  pinMode(led, OUTPUT);
  pinMode(pot, INPUT);
  Serial.begin(9600);
}

void loop()
{
  int x=analogRead(pot);
  int y= map(x, 0, 1023, 0, 255);
  analogWrite(led , y);
  Serial.println(y);
}