fix loading + htu21 sensor

platformio.ini

@@ -8,12 +8,11 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-; nanoatmega328new
-
 [env:arduino]
 platform = atmelavr
-board = uno
+board = nanoatmega328new
 framework = arduino
 lib_deps =
      ; adafruit/Adafruit BME280 Library @ ^2.1.2
+;      miguel5612/MQUnifiedsensor @ ^2.0.1
      sparkfun/SparkFun HTU21D Humidity and Temperature Sensor Breakout @ ^1.1.3

src/main.cpp

@@ -2,7 +2,7 @@
 #include <MQ135.h>
 #include <SparkFunHTU21D.h>
 
-#define PIN_MQ135 A0
+#define PIN_MQ135 A7
 #define PIN_NOISE 2
 #define PIN_LED_GREEN 3
 #define PIN_LED_GREEN2 4
@@ -11,52 +11,161 @@
 #define PIN_LED_RED 7
 #define PIN_LED_RED2 8
 
+void printValues(float ppm, float temp, float humidity);
+
+const int maxCount = 10;
+int count = 0;
+
+bool noise = false;
+bool noiseActive = false;
+
+// loading
+bool loading = true;
+int firstRead;
+const int loadingDelay = 200;
+int loadingCount = 30000 / loadingDelay;
+
 MQ135 co2_sensor(PIN_MQ135);
 HTU21D envSensor;
 
 void setup() {
+  pinMode(PIN_LED_GREEN, OUTPUT);
+  pinMode(PIN_LED_GREEN2, OUTPUT);
+  pinMode(PIN_LED_YELLOW, OUTPUT);
+  pinMode(PIN_LED_YELLOW2, OUTPUT);
+  pinMode(PIN_LED_RED, OUTPUT);
+  pinMode(PIN_LED_RED2, OUTPUT);
+  pinMode(PIN_NOISE, OUTPUT);
   Serial.begin(9600);
-
   co2_sensor.setR0(200);
 
+  // if (!bme.begin(0x76)) {
+  //   Serial.println(F("Could not find a valid BME280 sensor, check wiring!"));
+  // }
   envSensor.begin();
 }
 
 void loop() {
-  float temp = envSensor.readTemperature();
+  if (loading) {
-  float humidity = envSensor.readHumidity();
+    if (loadingCount <= 0) {
+      loading = false;
+      count = -1;
+      return;
+    }
 
-  float r0c = co2_sensor.getCorrectedR0(temp, humidity);
+    int temp = analogRead(PIN_MQ135);
-  float in = analogRead(PIN_MQ135);
+    if (temp > firstRead) {
-  double v = co2_sensor.getVoltage();
+      firstRead = temp;
-  double r = co2_sensor.getResistance();
+    }
-  float r0 = co2_sensor.getR0();
+    else if (temp < (firstRead - 100) && loadingCount > 10) {
+      loadingCount = 10;
+    }
 
-  double co2 = co2_sensor.getCO2();
+    digitalWrite(PIN_LED_GREEN, 0);
-  double co2c = co2_sensor.getCorrectedCO2(temp, humidity);
+    digitalWrite(PIN_LED_GREEN2, 0);
+    digitalWrite(PIN_LED_YELLOW, 0);
+    digitalWrite(PIN_LED_YELLOW2, 0);
+    digitalWrite(PIN_LED_RED, 0);
+    digitalWrite(PIN_LED_RED2, 0);
 
-  Serial.print("Analog Read: ");
+    switch (count)
-  Serial.println(in);
+    {
-  Serial.print("Voltage: ");
+      case 1:
-  Serial.println(v);
+        digitalWrite(PIN_LED_RED2, 1);
-  Serial.print("Resistance: ");
+        break;
-  Serial.println(r);
+      case 2:
+        digitalWrite(PIN_LED_RED, 1);
+        digitalWrite(PIN_LED_RED2, 1);
+        break;
+      case 3:
+        digitalWrite(PIN_LED_RED, 1);
+        digitalWrite(PIN_LED_YELLOW2, 1);
+        break;
+      case 4:
+        digitalWrite(PIN_LED_YELLOW2, 1);
+        digitalWrite(PIN_LED_YELLOW, 1);
+        break;
+      case 5:
+        digitalWrite(PIN_LED_YELLOW, 1);
+        digitalWrite(PIN_LED_GREEN2, 1);
+        break;
+      case 6:
+        digitalWrite(PIN_LED_GREEN2, 1);
+        digitalWrite(PIN_LED_GREEN, 1);
+        break;
+      case 7:
+        digitalWrite(PIN_LED_GREEN, 1);
+        break;
+      case 10:
+        count = 0;
+        break;
+      
+      default:
+        break;
+    }
 
-  Serial.print("R0: ");
+    loadingCount--;
-  Serial.println(r0);
+    count++;
+    delay(loadingDelay);
+    return;
+  }
+
+  if (count >= maxCount || count < 0) {
+    float temp = envSensor.readTemperature();
+    float humidity = envSensor.readHumidity();
+    float ppm = co2_sensor.getCorrectedCO2(temp, humidity);
+    
+    count = 0;
+    noiseActive = false;
+    digitalWrite(PIN_LED_GREEN, 0);
+    digitalWrite(PIN_LED_GREEN2, 0);
+    digitalWrite(PIN_LED_YELLOW, 0);
+    digitalWrite(PIN_LED_YELLOW2, 0);
+    digitalWrite(PIN_LED_RED, 0);
+    digitalWrite(PIN_LED_RED2, 0);
+
+    if (ppm < 900) {
+      digitalWrite(PIN_LED_GREEN, 1);
+    }
+    if (ppm > 750 && ppm < 1100) {
+      digitalWrite(PIN_LED_GREEN2, 1);
+    }
+    if (ppm > 900 && ppm < 1900) {
+      digitalWrite(PIN_LED_YELLOW, 1);
+    }
+    if (ppm > 1500 && ppm < 2200) {
+      digitalWrite(PIN_LED_YELLOW2, 1);
+    }
+    if (ppm > 2000 && ppm < 2800) {
+      digitalWrite(PIN_LED_RED, 1);
+    }
+    if (ppm > 2500) {
+      digitalWrite(PIN_LED_RED2, 1);
+    }
+    if (ppm > 3000) {
+      noiseActive = true;
+    }
+
+    printValues(ppm, temp, humidity);
+  }
+
+  if (noiseActive) {
+    noise = !noise;
+    digitalWrite(PIN_NOISE, noise);
+  }
+  else {
+    digitalWrite(PIN_NOISE, 0);
+  }
+
+  delay(100);
+  count++;
+}
+
+void printValues(float ppm, float temp, float humidity) {
+  Serial.print("ppm: ");
+  Serial.println(ppm);
   Serial.print("Temperature: ");
   Serial.println(temp);
   Serial.print("Humidity: ");
   Serial.println(humidity);
-  Serial.print("R0 Corrected: ");
-  Serial.println(r0c);
-
-  Serial.print("CO2: ");
-  Serial.println(co2);
-  Serial.print("CO2 Corrected: ");
-  Serial.println(co2c);
-
-  Serial.println("-----------------------------");
-
-  delay(1000);
 }