servo-com-lib

#include <Servo.h>

Servo myservo;  // create servo object to control a servo

void setup() {
  myservo.attach(9,900,2300);  // (pin, min, max)
}

void loop() {
  myservo.write(0);  // tell servo to go to a particular angle
  delay(1000);

  myservo.write(90);
  delay(500);

  myservo.write(135);
  delay(500);

  myservo.write(180);
  delay(1500);
}