#include <Servo.h>
Servo myServo1;
Servo myServo2;
Servo myServo3;

void setup() {
myServo1.attach(9);
myServo2.attach(10);
myServo3.attach(11);

}

void loop() {
myServo1.write(0);
delay(2000);
myServo1.write(180);
delay(2000);

myServo2.write(0);
delay(2000);
myServo2.write(180);
delay(2000);

myServo3.write(0);
delay(2000);
myServo3.write(180);
delay(2000);

}