/* Sweep
 by BARRAGAN <http://barraganstudio.com>
 This example code is in the public domain.

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

#include <Servo.h>

Servo myservo;  // create servo object to control a servo
// twelve servo objects can be created on most boards


int ugol = 40;
int pos = 90-ugol;    // variable to store the servo position
int k = 0;  // определяет на каком ходу горит лазер (может быть 1 или 0)

void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object

  pinMode(7, OUTPUT);
  
}

void loop() {
  for (pos = 90-(ugol); pos <= 90+(ugol); pos += 1) { // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    digitalWrite(7, 1-k);
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
     delay(40);                       // waits 15ms for the servo to reach the position
  }
  digitalWrite(7, k);
  delay(1200);
  for (pos = 90+(ugol); pos >= 90-(ugol); pos -= 1) { // goes from 180 degrees to 0 degrees
    digitalWrite(7, 1-k);
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(40);                       // waits 15ms for the servo to reach the position
  }
  digitalWrite(7, k);
  delay(1200);
}