Basic Setup for Ultrasonic Sensor and Arduino

1/* 
2 * Credits to all sources on Google, acting as reference to this  code below. This code is not 
3 * TechValer's own creation. TechValer has referred  to different projects and websites to 
4 * find an easy code for beginners to  get started with Ultrasonic Sensor HC-SR04 and Arduino.
5 * TechValer does not  claim this code to be its own. TechValer is greatly thankful for original 
6 *  creaters of this code and also all others who acted as reference. 
7 */
8
9/*  
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20
21/*  
22 *  Note: Any model of Arduino can be used for this project. Just keep in mind  the digital pins.
23 *  The readings available in the serial monitor are almost  accurate.
24 *  Refer to the documentation for better understanding of this particular  code and project.
25 */
26
27/*
28 * Thanks to Drona Automations Pvt.Ltd for  Sponsoring this project!
29 */
30 
31#define trigPin 6 // Connect trigpin to  D6 on Arduino
32#define echoPin 5 // Connect echopin to D5 on Arduino
33
34//  defines variables
35
36long duration; // It's a variable for the duration of sound  wave travel
37int inchdistance; // It's a variable for measurement of distance  in inches
38int cmdistance; // It's a variable for measurement of distance in centimeters
39
40void  setup() {
41  pinMode(trigPin, OUTPUT); // Sets the trigPin as an OUTPUT
42  pinMode(echoPin,  INPUT); // Sets the echoPin as an INPUT
43  Serial.begin(9600); // // For Serial  Communication
44}
45
46void loop() {
47  
48  digitalWrite(trigPin, LOW); //  Clears the trigPin condition
49  delayMicroseconds(2); 
50  digitalWrite(trigPin,  HIGH);
51  delayMicroseconds(10);
52  digitalWrite(trigPin, LOW);
53  
54  duration  = pulseIn(echoPin, HIGH); // Reads the echoPin, returns the sound wave travel time  in microseconds
55
56  // Calculating the distance
57  
58  inchdistance = duration  * 0.0133858 / 2; // To calculate the distance in inch
59  cmdistance = duration  * 0.034 / 2; // To calculate the distance in cm
60  
61  // Displays the distance  on the Serial Monitor
62  
63  Serial.print("Distance: ");
64  Serial.print(inchdistance);
65  Serial.println(" inch");
66  Serial.print(cmdistance);
67  Serial.println("  cm");
68} 
69