Bluethooth Mechanical Arm Made with Ice Cream Sticks

1#include <Servo.h>
2#define pinServ1 11
3#define pinServ2 10
4#define  pinServ3 9
5#define pinServ4 8
6
7Servo serv1 , serv2 , serv3 , serv4;
8
9int  motor1 = 90 ;
10int motor2 = 52 ;
11int motor3 = 67 ;
12int motor4 = 0  ;
13
14
15char  buf;
16
17void setup() {
18  Serial.begin(9600);
19  Serial.println("The device  started, now you can pair it with bluetooth!");
20
21  serv1.attach(pinServ1);
22  serv2.attach(pinServ2);
23  serv3.attach(pinServ3);
24  serv4.attach(pinServ4);
25
26  
27}
28
29void loop() {
30  while(Serial.available() > 0)
31  {
32    buf  = Serial.read();
33
34    Serial.println(Serial.read());  
35    
36    if(buf  == 'F'){
37      serv1.write(motor1 += 4);
38      delay(5);
39    }
40  
41     if(buf == 'B'){
42      serv1.write(motor1 -= 4);
43      delay(5);
44    }
45
46    if(buf == 'L'){
47      serv2.write(motor2 += 4);
48      delay(5);
49    }
50  
51     if(buf == 'R'){
52      serv2.write(motor2 -= 4);
53      delay(5);
54    }
55
56    if(buf == 'G'){
57      serv3.write(motor3 += 4);
58      delay(15);
59    }
60  
61     if(buf == 'I'){
62      serv3.write(motor3 -= 4);
63      delay(15);
64    }
65    if(buf == 'H'){
66      serv4.write(motor4 += 4);
67      delay(15);
68    }
69  
70     if(buf == 'J'){
71      serv4.write(motor4 -= 4);
72      delay(15);
73    }
74
75
76  delay(25);
77  }
78
79}