//Define Pins
const int potPin = A0; //Potentiometer pin
const int ledPin = 11; //LED pin

//Variable
unsigned int adcValue = 0;
float voltage = 0.0;

void setup(){
  Serial.begin(9600); //Initialize serial communication
  pinMode(ledPin, OUTPUT); //set LED pin as Output

  //Print Table
  Serial.println("ADC Experiment Result");
  Serial.println("=====================");
  Serial.println("ADC Value | Voltage (V) | LED PMW");
  Serial.println("__________________________________");
}

void loop(){
  //Read ADC value
  adcValue = analogRead(potPin);

  //Calculate Voltage value
  voltage = (adcValue*5.0)/1023.0;

  //Map ADC value to LED brightness (0-255)
  int ledBrightness = map(adcValue, 0, 1023, 0, 255);
  analogWrite(ledPin, ledBrightness);

  //Print Result in Table
  Serial.print(adcValue);
  Serial.print("\t  |");
  Serial.print(voltage, 2);
  Serial.print("V\t |");
  Serial.println(ledBrightness);
  delay(500); 
}