RC Boat by Arduino

1int ForwordSignal=A1;
2int BackwordSignal=A4;
3int LEDs=3;
4int  ForwordMotor=4;
5int BackwordMotor=12;
6int code1;
7int cod2;
8int FM=0;
9int  BM=0;
10int state=0;
11int testRelay=8;
12
13
14
15void setup() {
16 
17      Serial.begin(9600);
18      pinMode(ForwordSignal,INPUT);
19      pinMode(BackwordSignal,INPUT);
20      pinMode(ForwordMotor,OUTPUT);
21      pinMode(BackwordMotor,OUTPUT);
22      pinMode(LEDs,OUTPUT);
23      pinMode(testRelay,OUTPUT);
24
25
26}
27
28void  loop() {
29     FM=analogRead(ForwordSignal);
30     BM=analogRead(BackwordSignal);
31
32     Serial.println("B");
33     Serial.println("----");
34     Serial.println("F");
35
36     if(FM>200) //  3.3volts ---675 bit
37     {
38      digitalWrite(ForwordMotor,HIGH);//  LOW to start the relay 
39      digitalWrite(BackwordMotor,LOW); // HIGH to stop  the relay 
40      digitalWrite(testRelay,LOW);
41      
42      state=1;
43                   Serial.print("FM is");
44                   Serial.println(FM);
45
46     }else if(BM>200)
47      {
48        digitalWrite(BackwordMotor,HIGH);//very  good
49        digitalWrite(ForwordMotor,LOW);
50        ; // HIGH to stop the  relay 
51
52                Serial.print("BM is");
53                Serial.println(BM);
54
55        state=2;
56      }else{digitalWrite(ForwordMotor,HIGH);
57        digitalWrite(BackwordMotor,HIGH);
58        digitalWrite(testRelay,HIGH); // HIGH to stop the relay 
59
60      };
61