Quadcopter LED Blink

1int strobe1 = 7;
2int red = 6;
3int green1 = 8;
4int green2 = 5;  
5void setup()
6{
7  
8pinMode(strobe1, OUTPUT);  
9pinMode(green1, OUTPUT);  
10pinMode(green2, OUTPUT); 
11pinMode(red, OUTPUT);  
12}
13
14
15void  loop() {
16
17    //--------------------------------------
18  digitalWrite(green1,  HIGH); 
19  digitalWrite(green2, HIGH); 
20  //--------------------------------------
21  
22   //--------------------------------------
23  digitalWrite(strobe1, HIGH);  
24  delay(70);                      
25  digitalWrite(strobe1, LOW);    
26  delay(70);                       
27    digitalWrite(strobe1, HIGH);   
28  delay(70);                      
29  digitalWrite(strobe1, LOW);   
30  delay(200);                       
31  //--------------------------------------
32  
33 
34  for(int fading = 1 ;  fading <= 10; fading+=1) { 
35       analogWrite(red, fading);         
36        delay(50);                            
37  } 
38  
39  analogWrite(red, 255);  
40  delay  (50);
41
42    for(int fading = 10 ; fading >=1;fading -=1) { 
43   analogWrite(red,  fading);         
44        delay(100);
45  }
46   delay(100);
47  }