int potpin = 0;
 int ledpin = 11;
 int val = 0;
 void setup ()
 {
 pinMode (ledpin, OUTPUT);
 Serial.begin (9600);
 }
 void loop ()
 {
 val = analogRead (potpin);
 Serial.println (val);
 analogWrite (ledpin, val / 4);
 delay (10);
 }