int ledPin =17;
 int potensioPin = 34;
 int val = 0;
void setup() {
  // put your setup code here, to run once:

  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  val = analogRead(potensioPin);
  analogWrite(ledPin,val/4);
  Serial.println(val);
}