#include <Servo.h>
Servo myservo0; Servo myservo1; Servo myservo2; Servo myservo3;  
Servo myservo4; Servo myservo5; Servo myservo6; Servo myservo7;  
int pos = 0;    
void setup() {
  myservo0.attach(0);  myservo1.attach(1);  myservo2.attach(2);  
  myservo3.attach(3);  myservo4.attach(4);  myservo5.attach(5);  
  myservo6.attach(6);  myservo7.attach(7);  
}
void loop() {
  for (pos = 0; pos <= 180; pos += 1) { 
    myservo0.write(pos); myservo1.write(pos); myservo2.write(pos);            
    myservo3.write(pos); myservo4.write(pos); myservo5.write(pos);              
    myservo6.write(pos); myservo7.write(pos);              
    delay(5);                      
  }
  for (pos = 180; pos >= 0; pos -= 1) { 
    myservo0.write(pos); myservo1.write(pos); myservo2.write(pos);             
    myservo3.write(pos); myservo4.write(pos); myservo5.write(pos);            
    myservo6.write(pos); myservo7.write(pos);           
    delay(5);                       
  }
}