#include <Servo.h>
Servo myServo;
void setup() {
  // put your setup code here, to run once:
  myServo.attach(9);
}

void loop() {
  // put your main code here, to run repeatedly:
for(int i=0;i<181;i++){
  myServo.write(i);
  delay(10);
  myServo.write(i-2);
  delay(100);
}
}