Temperature And Humidity Monitoring System

1#include<dht.h>
2#define dht_apin 7
3dht DHT;
4
5
6
7#include  <Wire.h>
8#include <Adafruit_GFX.h>
9#include <Adafruit_SSD1306.h>
10
11#define  SCREEN_WIDTH 128 
12#define SCREEN_HEIGHT 64 
13
14Adafruit_SSD1306 oled(SCREEN_WIDTH,  SCREEN_HEIGHT, &Wire, -1);
15
16
17
18void setup(){
19 
20  Serial.begin(9600);
21  delay(500);
22  Serial.println("DHT11 Humidity & temperature Sensor\
23\
24");
25  delay(1000);
26 
27}
28 
29void loop(){
30 
31    DHT.read11(dht_apin);
32    
33    Serial.print("Current humidity = ");
34    Serial.print(DHT.humidity);
35    Serial.print("%  ");
36    Serial.print("temperature = ");
37    Serial.print(DHT.temperature);  
38    Serial.println("C  ");
39    
40    delay(2000);
41    Temp_and_Humidity();
42  
43
44  
45
46}
47
48void Temp_and_Humidity(){
49  if (!oled.begin(SSD1306_SWITCHCAPVCC,  0x3C)) {
50    Serial.println(F("SSD1306 allocation failed"));
51    while (true);
52  }
53
54  delay(2000);        
55  oled.clearDisplay(); 
56  oled.setTextSize(2);          
57  oled.setTextColor(WHITE);    
58  oled.setCursor(0, 10); 
59  oled.print("Temp  & Humidity "); 
60
61  oled.clearDisplay(); 
62  
63  oled.setTextSize(1);          
64  oled.setTextColor(WHITE);    
65  oled.setCursor(0, 10); 
66  oled.println("Temp(C)  : ");
67  
68  oled.setTextSize(2);          
69  oled.setTextColor(WHITE);    
70  oled.setCursor(50, 20); 
71  oled.println(DHT.temperature);
72
73  oled.setTextSize(1);          
74  oled.setTextColor(WHITE);    
75  oled.setCursor(0, 40);       
76  oled.println("Humidity(%) : ");
77  oled.setTextSize(2);          
78  oled.setTextColor(WHITE);    
79  oled.setCursor(50, 50); 
80  oled.println(DHT.humidity);
81  oled.setCursor(60,  90);
82  oled.println("%");
83  oled.display(); 
84  
85}
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