int potPin = A0;
int ledPin = 9;
int dt = 500;
float brightness = 0;

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

void loop(){
  int potValue = analogRead(potPin);

  // Conversion of analogValue which is between 0 to 1023 into analog voltagr

float voltage = (potValue * 5.0) / 1023.0;
brightness = (255./1023.) * potValue;
analogWrite(ledPin, brightness);
Serial.print(" Potentiometer Reading = ");
Serial.print(potValue);
Serial.print(",");
Serial.print(" Analog Voltage Reading = ");
Serial.print(voltage);
Serial.print("V , ");
Serial.print(" Brightness = ");
Serial.println(brightness);
delay(dt);
}