Gas detector CO & CH4

1///Arduino Sample Code
2#include <Adafruit_GFX.h>       // Include core  graphics library for the display
3#include <Adafruit_SSD1306.h>   // Include Adafruit_SSD1306  library to drive the display
4#include <Fonts/FreeMonoBold18pt7b.h>  // Add a  custom font
5#include <Fonts/FreeMono9pt7b.h>  // Add a custom font
6
7Adafruit_SSD1306  display(128, 64);            //Create display
8
9
10void setup()
11{
12  Serial.begin(9600);  //Set serial baud rate to 9600 bps
13
14  display.begin(SSD1306_SWITCHCAPVCC,  0x3C);  // Initialize display with the I2C address of 0x3C
15  display.clearDisplay();  // Clear the buffer
16  display.setTextColor(WHITE);  // Set color of the text
17  
18}
19void loop()
20{
21  double val;
22  val=analogRead(0);//Read Gas value  from analog 0; value 0~1023
23  val=(val/1023)*100;
24  Serial.println(val,DEC);//Print  the value to serial port
25  delay(300);
26
27  display.clearDisplay();  // Clear  the display so we can refresh
28
29  // Print text:
30  display.setFont(&FreeMono9pt7b);
31  display.setCursor(45,20);  // (x,y)
32  display.println("GAS");  // Text or  value to print
33
34  // Print temperature
35  char string[10];  // Create a  character array of 10 characters
36  // Convert float to a string:
37  dtostrf(val,  3, 0, string);  // (<variable>,<amount of digits we are going to use>,<amount of  decimal digits>,<string name>)
38  
39  display.setFont(&FreeMonoBold18pt7b);  // Set a custom font
40  display.setCursor(20,50);  // (x,y)
41  display.println(string);  // Text or value to print
42  display.setCursor(90,50);  // (x,y)
43  display.println("%");  // Text or value to print
44
45
46  display.display();  // Print everything  we set previously
47
48  
49}

1///Arduino Sample Code
2#include <Adafruit_GFX.h>       // Include core
3  graphics library for the display
4#include <Adafruit_SSD1306.h>   // Include Adafruit_SSD1306
5  library to drive the display
6#include <Fonts/FreeMonoBold18pt7b.h>  // Add a
7  custom font
8#include <Fonts/FreeMono9pt7b.h>  // Add a custom font
9
10Adafruit_SSD1306
11  display(128, 64);            //Create display
12
13
14void setup()
15{
16  Serial.begin(9600);
17  //Set serial baud rate to 9600 bps
18
19  display.begin(SSD1306_SWITCHCAPVCC,
20  0x3C);  // Initialize display with the I2C address of 0x3C
21  display.clearDisplay();
22  // Clear the buffer
23  display.setTextColor(WHITE);  // Set color of the text
24
25  
26}
27void loop()
28{
29  double val;
30  val=analogRead(0);//Read Gas value
31  from analog 0; value 0~1023
32  val=(val/1023)*100;
33  Serial.println(val,DEC);//Print
34  the value to serial port
35  delay(300);
36
37  display.clearDisplay();  // Clear
38  the display so we can refresh
39
40  // Print text:
41  display.setFont(&FreeMono9pt7b);
42
43  display.setCursor(45,20);  // (x,y)
44  display.println("GAS");  // Text or
45  value to print
46
47  // Print temperature
48  char string[10];  // Create a
49  character array of 10 characters
50  // Convert float to a string:
51  dtostrf(val,
52  3, 0, string);  // (<variable>,<amount of digits we are going to use>,<amount of
53  decimal digits>,<string name>)
54  
55  display.setFont(&FreeMonoBold18pt7b);
56  // Set a custom font
57  display.setCursor(20,50);  // (x,y)
58  display.println(string);
59  // Text or value to print
60  display.setCursor(90,50);  // (x,y)
61  display.println("%");
62  // Text or value to print
63
64
65  display.display();  // Print everything
66  we set previously
67
68  
69}