Arduino Temperature and Humidity Center

1/*
2
3
4  The circuit:
5 * LCD RS pin to digital pin 7
6 * LCD  Enable pin to digital pin 8
7 * LCD D4 pin to digital pin 9
8 * LCD D5 pin to  digital pin 10
9 * LCD D6 pin to digital pin 11
10 * LCD D7 pin to digital pin  12
11 * LCD R/W pin to ground
12 * LCD VSS pin to ground
13 * LCD VCC pin to  5V
14 * 10K resistor:
15 * ends to +5V and ground
16 * wiper to LCD VO pin (pin  3)
17
18
19
20// include the library code:
21#include <LiquidCrystal.h>
22#include  <SimpleDHT.h>
23
24int pinDHT11 = 2;
25SimpleDHT11 dht11;
26
27// initialize  the library with the numbers of the interface pins
28LiquidCrystal lcd(7, 8, 9,  10, 11, 12 );
29
30void setup() {
31  // set up the LCD's number of columns and  rows:
32  lcd.begin(16, 2);
33  // Print a message to the LCD.
34  //lcd.print("hello,  world!");
35}
36
37void loop() {
38  // set the cursor to column 0, line 1
39  // (note: line 1 is the second row, since counting begins with 0):
40  lcd.setCursor(0,  1);
41  // print the number of seconds since reset:
42  //lcd.print(millis() /  1000);
43  lcd.print("Sample DHT11...");
44  lcd.clear();
45  // read with  raw sample data.
46  byte temperature = 0;
47  byte humidity = 0;
48  byte data[40]  = {0};
49  if (dht11.read(pinDHT11, &temperature, &humidity, data)) {
50    lcd.print("Read  DHT11 failed");
51    delay(1000);
52    lcd.clear();
53    return;
54  }
55  //lcd.print("Sample OK: ");
56  lcd.print("TEMP = "); lcd.print((int)temperature);  lcd.print(" *C");
57  lcd.setCursor(0,2);
58  lcd.print("HUMD = "); lcd.print((int)humidity);  lcd.print(" % ");
59  
60  // DHT11 sampling rate is 1HZ.
61  delay(1000);
62    
63    
64}
65

1/*
2
3
4  The circuit:
5 * LCD RS pin to digital pin 7
6 * LCD
7  Enable pin to digital pin 8
8 * LCD D4 pin to digital pin 9
9 * LCD D5 pin to
10  digital pin 10
11 * LCD D6 pin to digital pin 11
12 * LCD D7 pin to digital pin
13  12
14 * LCD R/W pin to ground
15 * LCD VSS pin to ground
16 * LCD VCC pin to
17  5V
18 * 10K resistor:
19 * ends to +5V and ground
20 * wiper to LCD VO pin (pin
21  3)
22
23
24
25// include the library code:
26#include <LiquidCrystal.h>
27#include
28  <SimpleDHT.h>
29
30int pinDHT11 = 2;
31SimpleDHT11 dht11;
32
33// initialize
34  the library with the numbers of the interface pins
35LiquidCrystal lcd(7, 8, 9,
36  10, 11, 12 );
37
38void setup() {
39  // set up the LCD's number of columns and
40  rows:
41  lcd.begin(16, 2);
42  // Print a message to the LCD.
43  //lcd.print("hello,
44  world!");
45}
46
47void loop() {
48  // set the cursor to column 0, line 1
49
50  // (note: line 1 is the second row, since counting begins with 0):
51  lcd.setCursor(0,
52  1);
53  // print the number of seconds since reset:
54  //lcd.print(millis() /
55  1000);
56  lcd.print("Sample DHT11...");
57  lcd.clear();
58  // read with
59  raw sample data.
60  byte temperature = 0;
61  byte humidity = 0;
62  byte data[40]
63  = {0};
64  if (dht11.read(pinDHT11, &temperature, &humidity, data)) {
65    lcd.print("Read
66  DHT11 failed");
67    delay(1000);
68    lcd.clear();
69    return;
70  }
71
72  //lcd.print("Sample OK: ");
73  lcd.print("TEMP = "); lcd.print((int)temperature);
74  lcd.print(" *C");
75  lcd.setCursor(0,2);
76  lcd.print("HUMD = "); lcd.print((int)humidity);
77  lcd.print(" % ");
78  
79  // DHT11 sampling rate is 1HZ.
80  delay(1000);
81
82    
83    
84}
85