#define LEDPIN 9
#define POTIPIN A2
#define DELAY 50
  

void setup() {
  Serial.begin(9600);
}

void loop() {

  uint16_t x = 0;

  x = analogRead(POTIPIN);

  analogWrite(LEDPIN, x>>2);

  Serial.print("x = ");
  Serial.println(x);

  delay(DELAY);
  
}