Marker Beacon System Using Arduino

1int irInner=6,irMiddle=13,irOuter=12,irRunway=9;
2int ledInner=2,ledMiddle=3,ledOuter=4;
3int
4  sounds = 11; // Declaration of variables with pin numbers of components
5int valIn=0,valMd=0,valOt=0,valRunway=0;
6void
7  setup()
8{
9 pinMode(irInner, INPUT_PULLUP); // input component
10 pinMode(ledInner,
11  OUTPUT); //output component
12 
13 pinMode(irMiddle, INPUT_PULLUP);
14 pinMode(ledMiddle,
15  OUTPUT);
16 
17 pinMode(irOuter, INPUT_PULLUP);
18 pinMode(ledOuter, OUTPUT);
19
20  pinMode(irRunway,INPUT_PULLUP); 
21}
22void loop()
23{
24 valIn=digitalRead(irInner);
25  //getting current state of sensor(HIGH or LOW)
26 valMd=digitalRead(irMiddle);
27
28  valOt=digitalRead(irOuter);
29 valRunway=digitalRead(irRunway);
30 if(valOt==LOW
31  ) //if obstacle on outer sensor
32 {
3335
34 digitalWrite(ledOuter, HIGH); //led
35  on
36 tone(sounds, 1500, 350); //buzzer or speaker starts beeping sound
37 delay(350);
38
39  }
40 else
41 {
42 digitalWrite(ledOuter,LOW); //led off
43 }
44 delay(50);
45
46  
47 if(valMd==LOW )
48 { 
49 digitalWrite(ledMiddle, HIGH);
50 tone(sounds,
51  1200, 100);
52 delay(200);
53 tone(sounds, 1100, 450);
54 delay(250);
55 }
56
57  else
58 {
59 digitalWrite(ledMiddle, LOW);
60 }
61 delay(50);
62 
63 if(valIn==LOW
64  )
65 { 
66 digitalWrite(ledInner, HIGH);
67 tone(sounds, 1000, 100);
68 delay(100);
69
70  } 
71 else
72 {
73 digitalWrite(ledInner, LOW);
74 }
75 delay(50);
76 
77
78  if(valRunway==LOW)
79 { 
80 delay(10000);
81 } 
82}

1int en = 11, in1 = 7, in2 = 8; 
2
3void setup() {
4// put your setup  code here, to run once:
5pinMode(en, OUTPUT);
6pinMode(in1, OUTPUT);
7pinMode(in2,  OUTPUT);
8}
9
10void loop() {
11// put your main code here, to run repeatedly:
12digitalWrite(in1,  LOW);
13digitalWrite(in2, HIGH);
14
15analogWrite(en, 96);
16
17delay(14000);
18
19digitalWrite(in1,  LOW);
20digitalWrite(in2, LOW);
21
22delay(5000);
23
24digitalWrite(in1, HIGH);
25digitalWrite(in2,  LOW);
26
27analogWrite(en, 180);
28
29delay(10500);
30
31digitalWrite(in1,  LOW);
32digitalWrite(in2, LOW);
33
34delay(8000);
35
36}

1int irInner=6,irMiddle=13,irOuter=12,irRunway=9;
2int ledInner=2,ledMiddle=3,ledOuter=4;
3int  sounds = 11; // Declaration of variables with pin numbers of components
4int valIn=0,valMd=0,valOt=0,valRunway=0;
5void  setup()
6{
7 pinMode(irInner, INPUT_PULLUP); // input component
8 pinMode(ledInner,  OUTPUT); //output component
9 
10 pinMode(irMiddle, INPUT_PULLUP);
11 pinMode(ledMiddle,  OUTPUT);
12 
13 pinMode(irOuter, INPUT_PULLUP);
14 pinMode(ledOuter, OUTPUT);
15  pinMode(irRunway,INPUT_PULLUP); 
16}
17void loop()
18{
19 valIn=digitalRead(irInner);  //getting current state of sensor(HIGH or LOW)
20 valMd=digitalRead(irMiddle);
21  valOt=digitalRead(irOuter);
22 valRunway=digitalRead(irRunway);
23 if(valOt==LOW  ) //if obstacle on outer sensor
24 {
2535
26 digitalWrite(ledOuter, HIGH); //led  on
27 tone(sounds, 1500, 350); //buzzer or speaker starts beeping sound
28 delay(350);
29  }
30 else
31 {
32 digitalWrite(ledOuter,LOW); //led off
33 }
34 delay(50);
35  
36 if(valMd==LOW )
37 { 
38 digitalWrite(ledMiddle, HIGH);
39 tone(sounds,  1200, 100);
40 delay(200);
41 tone(sounds, 1100, 450);
42 delay(250);
43 }
44  else
45 {
46 digitalWrite(ledMiddle, LOW);
47 }
48 delay(50);
49 
50 if(valIn==LOW  )
51 { 
52 digitalWrite(ledInner, HIGH);
53 tone(sounds, 1000, 100);
54 delay(100);
55  } 
56 else
57 {
58 digitalWrite(ledInner, LOW);
59 }
60 delay(50);
61 
62  if(valRunway==LOW)
63 { 
64 delay(10000);
65 } 
66}