int led = 5;
int potensiometer = 15;
int val = 0;

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

void loop() {
  // put your main code here, to run repeatedly:
val = analogRead(potensiometer);
analogWrite(led, val/4);
Serial.println(val);
delay(1000);
}