API tools faq
paste
Advertisement
pleasedontcode

Air Quality rev_02

pleasedontcode
May 23rd, 2025
190
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
Arduino 3.20 KB | None | 0 0
raw download clone embed print report
  1. /********* Pleasedontcode.com **********
  2.  
  3.     Pleasedontcode thanks you for automatic code generation! Enjoy your code!
  4.  
  5.     - Terms and Conditions:
  6.     You have a non-exclusive, revocable, worldwide, royalty-free license
  7.     for personal and commercial use. Attribution is optional; modifications
  8.     are allowed, but you're responsible for code maintenance. We're not
  9.     liable for any loss or damage. For full terms,
  10.     please visit pleasedontcode.com/termsandconditions.
  11.  
  12.     - Project: Air Quality
  13.     - Source Code compiled for: ESP32 DevKit V1
  14.     - Source Code created on: 2025-05-23 17:52:10
  15.  
  16. ********* Pleasedontcode.com **********/
  17.  
  18. /****** SYSTEM REQUIREMENTS *****/
  19. /****** SYSTEM REQUIREMENT 1 *****/
  20.     /* Monitors air quality using MQ135 sensor and */
  21.     /* temperature/humidity with DHT22, providing real- */
  22.     /* time data for environmental analysis. Alerts when */
  23.     /* thresholds are exceeded. */
  24. /****** END SYSTEM REQUIREMENTS *****/
  25.  
  26. /* START CODE */
  27. /****** DEFINITION OF LIBRARIES *****/
  28. #include <MQUnifiedsensor.h>    //https://github.com/miguel5612/MQSensorsLib
  29. #include <DHT.h>    //https://github.com/adafruit/DHT-sensor-library
  30.  
  31. /****** FUNCTION PROTOTYPES *****/
  32. void setup(void);
  33. void loop(void);
  34.  
  35. /***** DEFINITION OF DIGITAL INPUT PINS *****/
  36. const uint8_t mq135_MQ135_DOUT_PIN_D13      = 13;
  37. const uint8_t dht22_DHT22_DOUT_PIN_D14      = 14;
  38.  
  39. /***** DEFINITION OF ANALOG INPUT PINS *****/
  40. const uint8_t mq135_MQ135_AOUT_PIN_D4       = 34; // Changed D4 to 34
  41.  
  42. /****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
  43. // MQ135 Sensor instance
  44. MQUnifiedsensor mq135("ESP32", 5, 10, mq135_MQ135_AOUT_PIN_D4, "MQ135");
  45. // DHT22 Sensor instance
  46. DHT dht(dht22_DHT22_DOUT_PIN_D14, DHT22);
  47.  
  48. // Thresholds for air quality and temperature/humidity
  49. const float airQualityThreshold = 300.0; // Example threshold for air quality
  50. const float temperatureThreshold = 30.0; // Example threshold for temperature
  51. const float humidityThreshold = 70.0; // Example threshold for humidity
  52.  
  53. void setup(void)
  54. {
  55.     // put your setup code here, to run once:
  56.     Serial.begin(115200);
  57.    
  58.     pinMode(mq135_MQ135_DOUT_PIN_D13, INPUT_PULLUP);
  59.     pinMode(dht22_DHT22_DOUT_PIN_D14, INPUT_PULLUP);
  60.     pinMode(mq135_MQ135_AOUT_PIN_D4, INPUT);
  61.  
  62.     // Initialize the sensors
  63.     mq135.init();
  64.     dht.begin();
  65. }
  66.  
  67. void loop(void)
  68. {
  69.     // put your main code here, to run repeatedly:
  70.     mq135.update();
  71.     float airQuality = mq135.getA(); // Changed getPPM to getA
  72.     float temperature = dht.readTemperature(); // Read temperature
  73.     float humidity = dht.readHumidity(); // Read humidity
  74.  
  75.     // Check for errors in reading DHT sensor
  76.     if (isnan(temperature) || isnan(humidity)) {
  77.         Serial.println("Failed to read from DHT sensor!");
  78.         return;
  79.     }
  80.  
  81.     // Print the sensor values
  82.     Serial.print("Air Quality (PPM): ");
  83.     Serial.println(airQuality);
  84.     Serial.print("Temperature (°C): ");
  85.     Serial.println(temperature);
  86.     Serial.print("Humidity (%): ");
  87.     Serial.println(humidity);
  88.  
  89.     // Alert if thresholds are exceeded
  90.     if (airQuality > airQualityThreshold) {
  91.         Serial.println("Alert: Air quality exceeds threshold!");
  92.     }
  93.     if (temperature > temperatureThreshold) {
  94.         Serial.println("Alert: Temperature exceeds threshold!");
  95.     }
  96.     if (humidity > humidityThreshold) {
  97.         Serial.println("Alert: Humidity exceeds threshold!");
  98.     }
  99.  
  100.     delay(2000); // Delay for 2 seconds before the next loop
  101. }
  102.  
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement
Public Pastes
Advertisement
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!