Color Shifting Obstacle Detector Using Ultrasonic Sensor

1
2int  green=2,yellow=3,red=4, echo=5, trig=6, duration, distance;
3
4int  call_distance(){
5
6   digitalWrite(trig, LOW);
7   delayMicroseconds(2);
8   digitalWrite(trig, HIGH);
9   delayMicroseconds(10);
10   digitalWrite(trig,  LOW);
11   duration=pulseIn(echo,HIGH);
12   distance=(duration/2)*.0344;
13   return distance;
14}
15void fade(int pin){
16  
17   for(int f=0; f<=255;  f+=30){
18    analogWrite(pin, f);
19    delay(30);
20  }
21  for(int f=255;  f>0; f-=30){
22    analogWrite(pin, f);
23    delay(30);
24  }
25  
26}
27
28
29void  setup(){
30  
31   Serial.begin(9600);
32   pinMode(green, OUTPUT);
33   pinMode(yellow,  OUTPUT);
34   pinMode(red, OUTPUT);
35   pinMode(echo, INPUT);
36   pinMode(trig,  OUTPUT);
37   
38  
39}
40
41void loop(){
42
43    call_distance();
44
45    while(distance<=10){
46    digitalWrite(yellow, LOW);
47    digitalWrite(green,  LOW);
48
49    fade(red);
50    call_distance();
51   
52   }
53   while(distance>10&&distance<=100){
54     
55    digitalWrite(red, LOW);
56    digitalWrite(green, LOW);
57    fade(yellow);
58    call_distance();
59   }
60   while(distance>100){
61 
62    digitalWrite(red,  LOW);
63    digitalWrite(yellow, LOW);
64    fade(green);
65    call_distance();
66    
67   }
68   delay(100);
69
70  
71}
72

1
2int  green=2,yellow=3,red=4, echo=5, trig=6, duration, distance;
3
4int
5  call_distance(){
6
7   digitalWrite(trig, LOW);
8   delayMicroseconds(2);
9
10   digitalWrite(trig, HIGH);
11   delayMicroseconds(10);
12   digitalWrite(trig,
13  LOW);
14   duration=pulseIn(echo,HIGH);
15   distance=(duration/2)*.0344;
16
17   return distance;
18}
19void fade(int pin){
20  
21   for(int f=0; f<=255;
22  f+=30){
23    analogWrite(pin, f);
24    delay(30);
25  }
26  for(int f=255;
27  f>0; f-=30){
28    analogWrite(pin, f);
29    delay(30);
30  }
31  
32}
33
34
35void
36  setup(){
37  
38   Serial.begin(9600);
39   pinMode(green, OUTPUT);
40   pinMode(yellow,
41  OUTPUT);
42   pinMode(red, OUTPUT);
43   pinMode(echo, INPUT);
44   pinMode(trig,
45  OUTPUT);
46   
47  
48}
49
50void loop(){
51
52    call_distance();
53
54
55    while(distance<=10){
56    digitalWrite(yellow, LOW);
57    digitalWrite(green,
58  LOW);
59
60    fade(red);
61    call_distance();
62   
63   }
64   while(distance>10&&distance<=100){
65
66     
67    digitalWrite(red, LOW);
68    digitalWrite(green, LOW);
69    fade(yellow);
70
71    call_distance();
72   }
73   while(distance>100){
74 
75    digitalWrite(red,
76  LOW);
77    digitalWrite(yellow, LOW);
78    fade(green);
79    call_distance();
80
81    
82   }
83   delay(100);
84
85  
86}
87