Led distance measurement using ultrasonic sensor and aurdino

1int trig = 10;
2int echo = 11;
3int led1 = 13;
4int led2 = 12;
5int  led3 = 9;
6int led4 = 8;
7int led5 = 7;
8int led6 = 6;
9int led7 = 5;
10int  led8 = 4;
11int led9 = 3;
12int led10 = 2;
13
14
15void setup() {
16  // put  your setup code here, to run once:
17  pinMode(13, OUTPUT);
18  pinMode(12, OUTPUT);
19  pinMode(11, INPUT);
20  pinMode(10, OUTPUT);
21  pinMode(9, OUTPUT);
22  pinMode(8,  OUTPUT);
23  pinMode(7, OUTPUT);
24  pinMode(6, OUTPUT);
25  pinMode(5, OUTPUT);
26  pinMode(4, OUTPUT);
27  pinMode(3, OUTPUT);
28  pinMode(2, OUTPUT);
29}
30
31void  loop() {
32  // put your main code here, to run repeatedly:
33  long duration,  distance;
34  digitalWrite(trig, LOW);
35  delayMicroseconds(2);
36  digitalWrite(trig,  HIGH);
37  delayMicroseconds(10);
38  digitalWrite(trig, LOW);
39  duration =  pulseIn(echo, HIGH);
40  distance = (duration / 2) / 29.1;
41
42  if (distance  >= 10)
43  {
44    digitalWrite(led1, HIGH);
45  }
46  else
47  {
48    digitalWrite(led1,  LOW);
49  }
50
51  if (distance >= 20)
52  {
53    digitalWrite(led2, HIGH);
54  }
55  else
56  {
57    digitalWrite(led2, LOW);
58  }
59
60  if (distance  >= 30)
61  {
62    digitalWrite(led3, HIGH);
63  }
64  else
65  {
66    digitalWrite(led3,  LOW);
67  }
68
69  if (distance >= 40)
70  {
71    digitalWrite(led4, HIGH);
72  }
73  else
74  {
75    digitalWrite(led4, LOW);
76  }
77
78  if (distance  >= 50)
79  {
80    digitalWrite(led5, HIGH);
81  }
82  else
83  {
84    digitalWrite(led5,  LOW);
85  }
86
87  if (distance >= 60)
88  {
89    digitalWrite(led6, HIGH);
90  }
91  else
92  {
93    digitalWrite(led6, LOW);
94  }
95
96  if (distance  >= 70)
97  {
98    digitalWrite(led7, HIGH);
99  }
100  else
101  {
102    digitalWrite(led7,  LOW);
103  }
104
105  if (distance >= 80)
106  {
107    digitalWrite(led8, HIGH);
108  }
109  else
110  {
111    digitalWrite(led8, LOW);
112  }
113
114  if (distance  >= 90)
115  {
116    digitalWrite(led9, HIGH);
117  }
118  else
119  {
120    digitalWrite(led9,  LOW);
121  }
122
123  if (distance >= 100)
124  {
125    digitalWrite(led10, HIGH);
126  }
127  else
128  {
129    digitalWrite(led10, LOW);
130  }
131
132}

1int trig = 10;
2int echo = 11;
3int led1 = 13;
4int led2 = 12;
5int
6  led3 = 9;
7int led4 = 8;
8int led5 = 7;
9int led6 = 6;
10int led7 = 5;
11int
12  led8 = 4;
13int led9 = 3;
14int led10 = 2;
15
16
17void setup() {
18  // put
19  your setup code here, to run once:
20  pinMode(13, OUTPUT);
21  pinMode(12, OUTPUT);
22
23  pinMode(11, INPUT);
24  pinMode(10, OUTPUT);
25  pinMode(9, OUTPUT);
26  pinMode(8,
27  OUTPUT);
28  pinMode(7, OUTPUT);
29  pinMode(6, OUTPUT);
30  pinMode(5, OUTPUT);
31
32  pinMode(4, OUTPUT);
33  pinMode(3, OUTPUT);
34  pinMode(2, OUTPUT);
35}
36
37void
38  loop() {
39  // put your main code here, to run repeatedly:
40  long duration,
41  distance;
42  digitalWrite(trig, LOW);
43  delayMicroseconds(2);
44  digitalWrite(trig,
45  HIGH);
46  delayMicroseconds(10);
47  digitalWrite(trig, LOW);
48  duration =
49  pulseIn(echo, HIGH);
50  distance = (duration / 2) / 29.1;
51
52  if (distance
53  >= 10)
54  {
55    digitalWrite(led1, HIGH);
56  }
57  else
58  {
59    digitalWrite(led1,
60  LOW);
61  }
62
63  if (distance >= 20)
64  {
65    digitalWrite(led2, HIGH);
66
67  }
68  else
69  {
70    digitalWrite(led2, LOW);
71  }
72
73  if (distance
74  >= 30)
75  {
76    digitalWrite(led3, HIGH);
77  }
78  else
79  {
80    digitalWrite(led3,
81  LOW);
82  }
83
84  if (distance >= 40)
85  {
86    digitalWrite(led4, HIGH);
87
88  }
89  else
90  {
91    digitalWrite(led4, LOW);
92  }
93
94  if (distance
95  >= 50)
96  {
97    digitalWrite(led5, HIGH);
98  }
99  else
100  {
101    digitalWrite(led5,
102  LOW);
103  }
104
105  if (distance >= 60)
106  {
107    digitalWrite(led6, HIGH);
108
109  }
110  else
111  {
112    digitalWrite(led6, LOW);
113  }
114
115  if (distance
116  >= 70)
117  {
118    digitalWrite(led7, HIGH);
119  }
120  else
121  {
122    digitalWrite(led7,
123  LOW);
124  }
125
126  if (distance >= 80)
127  {
128    digitalWrite(led8, HIGH);
129
130  }
131  else
132  {
133    digitalWrite(led8, LOW);
134  }
135
136  if (distance
137  >= 90)
138  {
139    digitalWrite(led9, HIGH);
140  }
141  else
142  {
143    digitalWrite(led9,
144  LOW);
145  }
146
147  if (distance >= 100)
148  {
149    digitalWrite(led10, HIGH);
150
151  }
152  else
153  {
154    digitalWrite(led10, LOW);
155  }
156
157}