Portable Distance Sensor With LCD

1#include <LiquidCrystal.h>
2
3int trigPin=4;
4int echoPin=5;
5int  pingTravelTime;
6float pingTravelDistance;
7float distanceToTarget;
8
9
10int  dt=5000;
11int rs=7;
12int en=8;
13int d4=9;
14int d5=10;
15int d6=11;
16int  d7=12;
17
18int buttonPin=A1;
19int buttonVal;
20
21int numMeas=100;
22float  avMeas;
23int j;
24float bucket=0;
25
26LiquidCrystal lcd(rs,en,d4,d5,d6,d7);
27void  setup() {
28  // put your setup code here, to run once:
29pinMode(trigPin,OUTPUT);
30pinMode(echoPin,INPUT);
31pinMode(buttonPin,INPUT_PULLUP);
32Serial.begin(9600);
33lcd.begin(16,2);
34}
35
36void  loop() {
37  // put your main code here, to run repeatedly:
38  lcd.setCursor(0,0);
39  lcd.print("Place The Target");
40  lcd.setCursor(0,1);
41  lcd.print("Press  To Measure");
42  buttonVal=digitalRead(buttonPin);
43  while (buttonVal==1){
44    buttonVal=digitalRead(buttonPin);
45  }
46  lcd.clear();
47  lcd.setCursor(0,0);
48  lcd.print("Measuring . . . ");
49  for (j=1;j<=numMeas;j=j+1){
50    digitalWrite(trigPin,LOW);
51delayMicroseconds(10);
52digitalWrite(trigPin,HIGH);
53delayMicroseconds(10);
54digitalWrite(trigPin,LOW);
55pingTravelTime=pulseIn(echoPin,HIGH);
56  delay(25);
57 pingTravelDistance=(pingTravelTime*765.*5280.*12)/(3600.*1000000);
58  Serial.println(pingTravelTime);
59 distanceToTarget=pingTravelDistance/2;
60 bucket=bucket+distanceToTarget;
61  }
62avMeas=bucket/numMeas;
63 Serial.print(" Av. Dist. to Target is : ");
64  Serial.print(avMeas);
65 Serial.println(" inches. ");
66 lcd.clear();
67 lcd.setCursor(0,0);
68  lcd.print("Target Distance :");
69 lcd.setCursor(0,1);
70 lcd.print(distanceToTarget);  
71 lcd.print(" Inches "); 
72 delay(dt);
73
74}
75

1#include <LiquidCrystal.h>
2
3int trigPin=4;
4int echoPin=5;
5int
6  pingTravelTime;
7float pingTravelDistance;
8float distanceToTarget;
9
10
11int
12  dt=5000;
13int rs=7;
14int en=8;
15int d4=9;
16int d5=10;
17int d6=11;
18int
19  d7=12;
20
21int buttonPin=A1;
22int buttonVal;
23
24int numMeas=100;
25float
26  avMeas;
27int j;
28float bucket=0;
29
30LiquidCrystal lcd(rs,en,d4,d5,d6,d7);
31void
32  setup() {
33  // put your setup code here, to run once:
34pinMode(trigPin,OUTPUT);
35pinMode(echoPin,INPUT);
36pinMode(buttonPin,INPUT_PULLUP);
37Serial.begin(9600);
38lcd.begin(16,2);
39}
40
41void
42  loop() {
43  // put your main code here, to run repeatedly:
44  lcd.setCursor(0,0);
45
46  lcd.print("Place The Target");
47  lcd.setCursor(0,1);
48  lcd.print("Press
49  To Measure");
50  buttonVal=digitalRead(buttonPin);
51  while (buttonVal==1){
52
53    buttonVal=digitalRead(buttonPin);
54  }
55  lcd.clear();
56  lcd.setCursor(0,0);
57
58  lcd.print("Measuring . . . ");
59  for (j=1;j<=numMeas;j=j+1){
60    digitalWrite(trigPin,LOW);
61delayMicroseconds(10);
62digitalWrite(trigPin,HIGH);
63delayMicroseconds(10);
64digitalWrite(trigPin,LOW);
65pingTravelTime=pulseIn(echoPin,HIGH);
66
67  delay(25);
68 pingTravelDistance=(pingTravelTime*765.*5280.*12)/(3600.*1000000);
69
70  Serial.println(pingTravelTime);
71 distanceToTarget=pingTravelDistance/2;
72 bucket=bucket+distanceToTarget;
73
74  }
75avMeas=bucket/numMeas;
76 Serial.print(" Av. Dist. to Target is : ");
77
78  Serial.print(avMeas);
79 Serial.println(" inches. ");
80 lcd.clear();
81 lcd.setCursor(0,0);
82
83  lcd.print("Target Distance :");
84 lcd.setCursor(0,1);
85 lcd.print(distanceToTarget);
86  
87 lcd.print(" Inches "); 
88 delay(dt);
89
90}
91