// This example repeatedly sets a servo motor, connected
// to digital i/o pin 9, to specific angular positions.

#include <Servo.h>      // include the Servo library
 
Servo myServo;          // declare Servo object

void setup() {
  myServo.attach(9);    // attach object 'myServo' to pin 9 
} 

void loop() { 
  myServo.write(0);     // set servo position to 0 degrees
  delay(1500);          // allow time to reach its new position
  myServo.write(90);    // set servo position to 90 degrees
  delay(1500);
  myServo.write(170);   // set servo position to 170 degrees
  delay(1500);
}