#include <Servo.h>
Servo servo1;
int pos = 0;

void setup(){
  servo1.attach(9);
  Serial.begin(9600);
}

void loop(){
  for (int pos = 0; pos <= 90; pos += 1) {
    servo1.write(pos);
    delay(10);
    if(pos == 45){
      delay(1000);
      Serial.print("pos =");
    Serial.println(pos);
    }
    if(pos == 90){
      delay(1000);
      Serial.print("pos =");
    Serial.println(pos);
    }
    
  for (int pos = 90; pos = 0; pos -= 1) {
    servo1.write(pos);
      delay(15);
    if(pos == 0){
      delay(1000);
      Serial.print("pos =");
    Serial.println(pos);
    }
    }
    
  }
}