Bluetooth Controlled Car with Camera

1//youtube.com/lighttubes//
2//poncolhijau.web.id//
3
4int val;
5int  IN4 = 11; 
6int IN3 = 10;
7int IN2 = 9;
8int IN1 = 8;
9int LED = 13;
10
11void  setup()
12{
13  Serial.begin(9600);
14  pinMode (IN4, OUTPUT);
15  pinMode (IN3,  OUTPUT);
16  pinMode (IN2, OUTPUT);
17  pinMode (IN1, OUTPUT);
18  pinMode (LED,  OUTPUT);
19}
20
21void loop()
22{
23if (Serial.available())
24  {   
25     val  = Serial.read();
26     if (val == 'U') //forward no stop
27        {
28        digitalWrite  (IN1, HIGH);
29        digitalWrite (IN2, LOW); 
30        digitalWrite (IN3,  HIGH);
31        digitalWrite (IN4, LOW);         
32        }     
33     if  (val == 'D') //backward no stop
34        {
35        digitalWrite (IN1, LOW);
36        digitalWrite (IN2, HIGH); 
37        digitalWrite (IN3, LOW);
38        digitalWrite  (IN4, HIGH);         
39        }
40     if (val == 'A') //forward
41        {
42        digitalWrite (IN1, HIGH);
43        digitalWrite (IN2, LOW); 
44        digitalWrite  (IN3, HIGH);
45        digitalWrite (IN4, LOW);         
46        }
47     if  ( val == 'B') //backward
48        {
49         digitalWrite (IN1, LOW); 
50         digitalWrite (IN2, HIGH);
51         digitalWrite (IN3, LOW); 
52         digitalWrite  (IN4, HIGH);
53        }
54     if ( val == 'R') //TURN RIGHT
55        {
56         digitalWrite (IN1, LOW); 
57         digitalWrite (IN2, HIGH);
58         digitalWrite  (IN3, HIGH); 
59         digitalWrite (IN4, LOW);
60        }
61     if ( val  == 'L') //TURN LEFT
62        {
63         digitalWrite (IN1, HIGH); 
64         digitalWrite  (IN2, LOW);
65         digitalWrite (IN3, LOW); 
66         digitalWrite (IN4,  HIGH);
67        }
68      if ( val == 'X') //led ON
69    {
70         digitalWrite  (LED, HIGH); 
71        }  
72      if ( val == 'Y') //led OFF
73    {
74         digitalWrite  (LED, LOW); 
75        }  
76      if ( val == 'S') //stop
77    {
78         stop();
79        }  
80  }
81}
82
83void stop()
84        {
85         digitalWrite  (IN1, LOW); 
86         digitalWrite (IN2, LOW);
87         digitalWrite (IN3,  LOW); 
88         digitalWrite (IN4, LOW);
89        }