#include <Servo.h>

Servo servo1;

int x_key = A0;
int x_pos;

int SW_pin = 7;

int servo1_pin = 3;
int initial_position1 = 90;


void setup() 
{
  // put your setup code here, to run once:
  Serial.begin (9600);
  Serial.println(x_pos);
  servo1.attach(servo1_pin); 
  servo1.write(initial_position1);
  pinMode (x_key, INPUT);
  pinMode(SW_pin, INPUT);
  digitalWrite(SW_pin, HIGH);
}

void loop() 
{
  // put your main code here, to run repeatedly:
  x_pos = analogRead (x_key);
  servo1.write(initial_position1); 
  Serial.print("Switch: ");
  Serial.print(digitalRead(SW_pin));
  Serial.print("     ");
  Serial.print("x=");
  Serial.println(x_pos);
  delay(100);

  if (x_pos < 400)
  {
	  if (initial_position1 < 10) { } 
	  else
    {
		initial_position1 = initial_position1 - 30; 
		servo1.write(initial_position1); 
    Serial.println(initial_position1);
		delay (10); 
	  } 
  }

  if (x_pos > 600)
  {
	if (initial_position1 > 180){ }  
	else
      {
		initial_position1 = initial_position1 + 30;
		servo1.write(initial_position1);
    Serial.println(initial_position1);
		delay (10);
	    }
  }
}