void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(4, INPUT);

  // LED
  pinMode(25, OUTPUT);
}

void loop() {
  int voltage = analogRead(4);

  // LED Intensity Analogy Control
  int intensity = map(voltage, 0, 4095, 0, 255); //Mapping 4095 rotation to 255 for avoiding LED blast
  analogWrite(25, intensity);
  //Serial.println(voltage);

  Serial.println("    Value: " + String (voltage));
  Serial.println("Intensity: " + String (intensity));

  delay(1000); // this speeds up the simulation 
}