#include <Servo.h>
Servo myServo[1];
int i;

void setup() {
// put your setup code here, to run once:
myServo [1].attach (9);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
for (i=0;i<=179;i++){
  myServo[1].write(i);
  delay(25);
}
for (i=179;i>=0;i--){
  myServo[1].write(i);
  delay(25);
}

}