#include <Servo.h>

Servo myservo1;
Servo myservo2;
void setup() {
  // put your setup code here, to run once:
  myservo1.attach(11);
  myservo2.attach(12);

}

void loop() {
  // put your main code here, to run repeatedly:
  for(int i = 0 ; i <180 ; i++){
    myservo1.write(i);
    delay(10);
    i=i+10;
  }
  for(int i = 0 ; i <180 ; i++){
    myservo2.write(i);
    delay(10);
    i=i+10;
  }
}