Unified code and workflow + logic.

All that s needed now is Wifi integration with the outputs.

DSM is weird... will look again later.

1 files changed, 115 insertions, 0 deletions

diff --git a/actual_board_code/actual_board_code.ino b/actual_board_code/actual_board_code.ino
new file mode 100644
index 0000000..a080a9b
--- /dev/null
+++ b/actual_board_code/actual_board_code.ino
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+
+// REQUIRES the following Arduino libraries:
+// - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library
+// - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor
+
+#include "DHT.h"
+
+// CONFIGURATION
+
+// DHT PINS
+
+#define DHTPIN 4  // Digital pin connected to the DHT sensor
+// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14
+
+// Uncomment whatever type you're using
+//#define DHTTYPE DHT11   // DHT 11
+#define DHTTYPE DHT11   // DHT 22  (AM2302), AM2321
+//#define DHTTYPE DHT21   // DHT 21 (AM2301)
+
+// DSM PINS
+
+#define DSM501 18  // Just leave it as is
+
+// END PIN CONFIGURATION SECTION
+
+
+// SOME VARS
+
+unsigned long duration;
+unsigned long starttime;
+unsigned long endtime;
+unsigned long sampletime_ms = 1000;
+unsigned long lowpulseoccupancy = 0;
+float ratio = 0;
+float concentration = 0;
+uint32_t delayMS = 1000; // in loop delay() explicited
+
+
+// Initialize DHT Sensor. The current DHT reading algorithm adjusts itself to work on faster procs. (rtfm --> docs)
+DHT dht(DHTPIN, DHTTYPE);
+
+
+void setup() { // Setup code that gets run regardless
+  Serial.begin(9600);
+
+  Serial.println(F("----- DHT + MQ + DSM Interface -----"));
+
+  dht.begin(); // Begin DHT System at startup
+  
+  pinMode(DSM501,INPUT); // Initialize DSM501A Sensor
+  
+  starttime = millis(); 
+}
+
+void loop() { // Main code
+  // Wait a few seconds between measurements.
+  delay(delayMS);
+
+  // vvv DHT MEASUREMENTS SECTION vvv //
+
+  // Reading temperature or humidity takes about 250 milliseconds!
+  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
+  float h = dht.readHumidity();
+  // Read temperature as Celsius (the default)
+  float t = dht.readTemperature();
+  // Read temperature as Fahrenheit (isFahrenheit = true)
+  float f = dht.readTemperature(true);
+
+  // Check if any reads failed and exit early (to try again).
+  if (isnan(h) || isnan(t) || isnan(f)) {
+    Serial.println(F("Failed to read from DHT sensor!"));
+    return;
+  }
+
+  // Compute heat index in Fahrenheit (the default)
+  float hif = dht.computeHeatIndex(f, h);
+  // Compute heat index in Celsius (isFahreheit = false)
+  float hic = dht.computeHeatIndex(t, h, false);
+
+  Serial.print(F("Humidity: "));
+  Serial.print(h);
+  Serial.print(F("%  Temperature: "));
+  Serial.print(t);
+  Serial.print(F("°C "));
+  Serial.print(f);
+  Serial.print(F("°F  Heat index: "));
+  Serial.print(hic);
+  Serial.print(F("°C "));
+  Serial.print(hif);
+  Serial.println(F("°F"));
+
+  // vvv MQ135 MEASUREMENTS SECTION vvv //
+
+  Serial.println(analogRead(15)); // MQ135 Sensor - ppm metrics (raw)
+  Serial.println("ppm")
+
+ // vvv DSM501A MEASUREMENTS SECTION vvv //
+
+  duration = pulseIn(DSM501, LOW);
+  lowpulseoccupancy += duration;
+  endtime = millis();
+
+  ratio = (lowpulseoccupancy-endtime+starttime + sampletime_ms)/(sampletime_ms*10.0);
+  concentration = 1.1*pow(ratio,3)-3.8*pow(ratio,2)+520*ratio+0.62; // idk what s going on in here anymore.. it used to work, it doesn t now..
+  // concentration = 0.001915 * pow(low_ratio, 2) + 0.09522 * low_ratio - 0.04884;
+  Serial.print("lowpulseoccupancy: ");
+  Serial.print(lowpulseoccupancy);
+  Serial.print("    ratio: ");
+  Serial.print(ratio);
+  Serial.print("    DSM501A: ");
+  Serial.println(concentration);
+
+  lowpulseoccupancy = 0;
+  starttime = millis();
+}