const int potPin = A0;
const int pinLed = 6;

void setup() {
  pinMode(potPin, INPUT);
  pinMode(pinLed, OUTPUT);

}

void loop() {
  int potValue = analogRead(potPin); 
  int brightness = map(potValue, 0, 1023, 0, 255); 
  analogWrite(pinLed, brightness); 
  delay(100);
  analogWrite(pinLed, LOW);
  delay(100); 
}