int potPin = 0;    // select the input pin for the potentiometer
int ledPin = 13;   // select the pin for the LED
int val = 0;       // variable to store the value coming from the sensor

void setup() {
  pinMode(ledPin, OUTPUT);  // declare the ledPin as an OUTPUT
    Serial.begin(9600);
}

void loop() {
  val = analogRead(potPin);
  val = map(val, 0, 1023, 0, 10);
 Serial.println(val);
}