#include <Servo.h>
Servo myservo;

void setup() {
Serial.begin(9600);
myservo.attach(5);
}

void loop() {

    for (int i=0; i<180; i++)
    {
     int y=180-i;

Serial.println(i);
 myservo.write(i);
delay(y/4);
}
delay(1000);
for (int i=180; i>0; i--)
    {
     int y=0+i;

Serial.println(i);
 myservo.write(i);
delay(y/4);