#include <Servo.h>

Servo myservo_X;

void setup() {
  myservo_X.attach(9);
  Serial.begin(115200);
}

void loop() {
/*
  for (byte j=20; j<140; j++){
    myservo_X.write(j);
    Serial.print("up j=");
    Serial.println(j);
    delay(25);
  }
  for (byte i=140; i>20; i--) {
    myservo_X.write(i);
    Serial.print("down i= ");
    Serial.println(i);
    delay(25);
  }
 */
  myservo_X.write(115);
  delay(1000);
  myservo_X.write(45);
  delay(1000);
}