ControlledFade using Potentiometer

/* Analog Read to LED
 * ------------------ 
 *
 * controls a brightness of a light emitting diode(LED) connected to digital  
 * pin 13. The brightness depends on the value obtained by analogRead().
 * In the easiest case we connect
 * a potentiometer to analog pin 2.
 *
 * Created 30 March 2019
 * by AsherThomasBabu
 * 
 *
 */

int potPin = 2;    // select the input pin for the potentiometer
int ledPin = 13;   // select the pin for the LED
int val = 0;       // variable to store the value coming from the sensor

void setup() {
  pinMode(ledPin, OUTPUT);  // declare the ledPin as an OUTPUT
}

void loop() {
  val = analogRead(potPin);    // read the value from the sensor
  analogWrite(ledPin, val);    // sets the LED brigthness to the value read from 
}