Basic setup for Arduino with Temp. & Humidity sensor

1/* 
2 * Credits to all sources on Google, acting as reference to this
3  code below. This code is not 
4 * TechValer's own creation. TechValer has referred
5  to different projects and websites to 
6 * find an easy code for beginners to
7  get started with Temperature & Humidity sensor(DHT11/DHT22) 
8 * and Arduino.
9  TechValer does not claim this code to be its own. TechValer is greatly thankful
10  
11 * for original creaters of this code and also all others who acted as reference.
12  
13 */
14
15/* 
16 *  About TechValer
17 *  
18 *  What comes to mind when
19  you think of tech...hmm, we're sure youre thinking of iPhone, 
20 *  Alexa, Boston
21  Dynamics robotic dog etc., at least thats what we would have thought of. 
22 *
23  Our point here is, when you look inside this tech...you'll find weird boards with
24  
25 *  components attached to it. This stuff is electronics and we at Techvaler
26  deeply appreciate 
27 *  this piece of tech. As the name suggests, we are Tech
28  Enthusiasts who know the Worth and 
29 *  Potential of these amazing tech stuff!
30  So, check out our website techvaler.com and Youtube channel: "Techcafe" to find
31  out 
32 *  more.
33 */
34
35/* 
36 *  Note: Any model of Arduino can be used
37  for this project. Just keep in mind the digital pins.
38 *  The readings available
39  in the serial monitor are almost accurate.
40 *  Refer to the documentation for
41  better understanding of this particular code and project.
42 */
43
44/*
45 *
46  Thanks to Drona Automations Pvt.Ltd for Sponsoring this project!
47 */
48
49#include
50  "DHT.h" //It is necessary for us to include this library when we use DHT11/DHT22
51  sensor
52#define DHTPIN 3 // Defining the data output pin to Arduino
53#define
54  DHTTYPE DHT11 // Specify the sensor type(DHT11 or DHT22)
55
56DHT dht(DHTPIN,
57  DHTTYPE); //Declaration for varibles below...
58
59void setup() {
60  Serial.begin(9600);
61  //To engage serial monitor
62  dht.begin(); //To initialise DHT sensor
63}
64
65void
66  loop() {
67  delay(1000);
68  //Here h= Humidity; tC= Temperature in degree C;
69  tF= Temperature in degree F
70  float h= dht.readHumidity();
71  float tC= dht.readTemperature();
72
73  float tF= dht.readTemperature(true);
74
75  if (isnan(h) || isnan(tC) || isnan(tF)){
76
77    Serial.println("Failed to read the DHT sensor. Check connections");
78    }
79
80  else{
81    Serial.print("Humidity: ");
82    Serial.print(h);
83    Serial.print("%");
84
85    Serial.print("  ||  ");
86    Serial.print("Temperature: ");
87    Serial.print(tC);
88
89    Serial.print("C  ");
90    Serial.print(tF);
91    Serial.println("F");
92  
93    }
94}    
95

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 Temperature & Humidity sensor(DHT11/DHT22) 
5 * and Arduino.  TechValer does not claim this code to be its own. TechValer is greatly thankful  
6 * for original creaters of this code and also all others who acted as reference.  
7 */
8
9/* 
10 *  About TechValer
11 *  
12 *  What comes to mind when  you think of tech...hmm, we're sure youre thinking of iPhone, 
13 *  Alexa, Boston  Dynamics robotic dog etc., at least thats what we would have thought of. 
14 *  Our point here is, when you look inside this tech...you'll find weird boards with  
15 *  components attached to it. This stuff is electronics and we at Techvaler  deeply appreciate 
16 *  this piece of tech. As the name suggests, we are Tech  Enthusiasts who know the Worth and 
17 *  Potential of these amazing tech stuff!  So, check out our website techvaler.com and Youtube channel: "Techcafe" to find  out 
18 *  more.
19 */
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#include  "DHT.h" //It is necessary for us to include this library when we use DHT11/DHT22  sensor
32#define DHTPIN 3 // Defining the data output pin to Arduino
33#define  DHTTYPE DHT11 // Specify the sensor type(DHT11 or DHT22)
34
35DHT dht(DHTPIN,  DHTTYPE); //Declaration for varibles below...
36
37void setup() {
38  Serial.begin(9600);  //To engage serial monitor
39  dht.begin(); //To initialise DHT sensor
40}
41
42void  loop() {
43  delay(1000);
44  //Here h= Humidity; tC= Temperature in degree C;  tF= Temperature in degree F
45  float h= dht.readHumidity();
46  float tC= dht.readTemperature();
47  float tF= dht.readTemperature(true);
48
49  if (isnan(h) || isnan(tC) || isnan(tF)){
50    Serial.println("Failed to read the DHT sensor. Check connections");
51    }
52  else{
53    Serial.print("Humidity: ");
54    Serial.print(h);
55    Serial.print("%");
56    Serial.print("  ||  ");
57    Serial.print("Temperature: ");
58    Serial.print(tC);
59    Serial.print("C  ");
60    Serial.print(tF);
61    Serial.println("F");  
62    }
63}    
64