int pinPot = 15;
int LED = 23;
void setup() {
  Serial.begin(9600);
  Serial.println("Estudando sobre entrada analogica");

  pinMode(pinPot, INPUT);
  pinMode(LED, OUTPUT);
}

void loop() {
  int valor = analogRead(pinPot);
  digitalWrite(LED, HIGH);
  delay(valor);
  digitalWrite(LED, LOW);
  delay(valor);
}