/*
 Controlling a servo position using a potentiometer (variable resistor)
 by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>

 modified on 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Knob
*/

#include <Servo.h>

#define pinX A1       

 
Servo servo1;          

void setup() {
   pinMode(pinX, INPUT); 
   servo1.attach(9);            
}
 
void loop() {
   int X = analogRead(pinX);     

   X = map(X, 0, 1023, 0, 180);
  
   servo1.write(X);                     
}