const int led_pin = 11;
int potPin = A3;

void setup() {
  pinMode(led_pin, OUTPUT);
  pinMode(potPin, INPUT);
  Serial.begin(9600);
}

void loop() {
  int pot = analogRead(potPin);
  int pot2 = map(pot, 0,1023, 0, 255);
  int delayTime = map(pot, 0, 1023, 1000, 100); 

  // Turn LED on
  analogWrite(led_pin, pot2); 
  Serial.print("Turning ON - Delay: ");
  Serial.print(delayTime);
  Serial.println("ms");

  delay(delayTime); //delay to turn off the led

  analogWrite(led_pin, 0); 
  Serial.print("Turning OFF - Delay: ");
  Serial.print(delayTime);
  Serial.println("ms");
  delay(delayTime);  //delay to turn on the led
}