#include <Servo.h>
Servo myservo;
int pos = 0;
void setup() {
  // put your setup code here, to run once:
myservo.attach(11);
Serial.begin(115200);
}

void loop() {
  // put your main code here, to run repeatedly:
for (pos = 0; pos <= 90; pos += 1){
myservo.write(pos);
Serial.println(pos);
delay(15);
}
delay(1000);
for (pos = 90; pos >= 0; pos -= 1){
myservo.write(pos);
Serial.println(pos);
delay(15);
}
}