Line Follower Using Arduino | Easy DIY Project

1#define LS1 A3
2#define LS2 A2 
3#define RS1 A1
4#define RS2 A0  
5#define LM1 8     
6#define LM2 9    
7#define RM1 10      
8#define RM2  11    
9
10
11
12
13void setup()
14{ 
15  pinMode(LS1, INPUT);
16  pinMode(LS2,  INPUT);
17
18  pinMode(RS1, INPUT);
19  pinMode(RS2, INPUT);
20
21  pinMode(LM1,  OUTPUT);
22  pinMode(LM2, OUTPUT);
23  pinMode(RM1, OUTPUT);
24  pinMode(RM2,  OUTPUT);
25
26     digitalWrite(LM1,0);
27  digitalWrite(LM2,0);
28  digitalWrite(RM1,0);
29  digitalWrite(RM2,0);
30
31delay(5000);
32}
33
34
35
36
37
38int left()
39{
40  if(digitalRead(LS1)||digitalRead(LS2))
41  return(0);
42  else
43  return(1);
44}
45int  right()
46{
47  if(digitalRead(RS1)||digitalRead(RS2))
48  return(0);
49  else
50  return(1);
51}
52void loop()
53{
54if(left()&&right())
55{
56  digitalWrite(LM1,1);
57  digitalWrite(LM2,0);
58  digitalWrite(RM1,1);
59  digitalWrite(RM2,0);
60  
61}
62else  if ((left()==0)&&(right()==1))
63{
64    digitalWrite(LM1,1);
65  digitalWrite(LM2,0);
66  digitalWrite(RM1,0);
67  digitalWrite(RM2,0);
68}
69else if ((left()==1)&&(right()==0))
70{
71    digitalWrite(LM1,0);
72  digitalWrite(LM2,0);
73  digitalWrite(RM1,1);
74  digitalWrite(RM2,0);
75}
76else
77{
78   digitalWrite(LM1,0);
79  digitalWrite(LM2,0);
80  digitalWrite(RM1,0);
81  digitalWrite(RM2,0);
82}
83
84}

1#define LS1 A3
2#define LS2 A2 
3#define RS1 A1
4#define RS2 A0
5  
6#define LM1 8     
7#define LM2 9    
8#define RM1 10      
9#define RM2
10  11    
11
12
13
14
15void setup()
16{ 
17  pinMode(LS1, INPUT);
18  pinMode(LS2,
19  INPUT);
20
21  pinMode(RS1, INPUT);
22  pinMode(RS2, INPUT);
23
24  pinMode(LM1,
25  OUTPUT);
26  pinMode(LM2, OUTPUT);
27  pinMode(RM1, OUTPUT);
28  pinMode(RM2,
29  OUTPUT);
30
31     digitalWrite(LM1,0);
32  digitalWrite(LM2,0);
33  digitalWrite(RM1,0);
34
35  digitalWrite(RM2,0);
36
37delay(5000);
38}
39
40
41
42
43
44int left()
45{
46
47  if(digitalRead(LS1)||digitalRead(LS2))
48  return(0);
49  else
50  return(1);
51}
52int
53  right()
54{
55  if(digitalRead(RS1)||digitalRead(RS2))
56  return(0);
57  else
58
59  return(1);
60}
61void loop()
62{
63if(left()&&right())
64{
65  digitalWrite(LM1,1);
66
67  digitalWrite(LM2,0);
68  digitalWrite(RM1,1);
69  digitalWrite(RM2,0);
70  
71}
72else
73  if ((left()==0)&&(right()==1))
74{
75    digitalWrite(LM1,1);
76  digitalWrite(LM2,0);
77
78  digitalWrite(RM1,0);
79  digitalWrite(RM2,0);
80}
81else if ((left()==1)&&(right()==0))
82{
83
84    digitalWrite(LM1,0);
85  digitalWrite(LM2,0);
86  digitalWrite(RM1,1);
87
88  digitalWrite(RM2,0);
89}
90else
91{
92   digitalWrite(LM1,0);
93  digitalWrite(LM2,0);
94
95  digitalWrite(RM1,0);
96  digitalWrite(RM2,0);
97}
98
99}