#include <Servo.h>
Servo servo1;
Servo servo2;
Servo servo3;
void setup() {
 servo1.attach(9);
 servo2.attach(10);
 servo3.attach(11);
}
void loop() {
step1();
delay(1000);
step2();
delay(1000);
step3();
delay(1000);
step4();
delay(1000);
}
void step1() {
 servo1.write(180);
 servo2.write(00);
 servo3.write(00);
}
void step2() {
 servo1.write(180);
 servo2.write(180);
 servo3.write(00);
}
void step3() {
 servo1.write(180);
 servo2.write(180);
 servo3.write(180);
}
void step4() {
 servo1.write(00);
 servo2.write(00);
 servo3.write(00);
}