int pot;
int pot_map;

void setup() {
pinMode(11,OUTPUT);
Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
pot=analogRead(A0);
pot_map=map(pot,0,1023,0,255);
analogWrite(11,pot_map);
Serial.println(pot);
Serial.println(pot_map);
delay(500);
}