Hydroponic Greenhouse Management System Virtual PINs not responding

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10
  1. I can’t find ANY reference to V28 nor V29 in your code, which is probably the cause!
  2. have absolutely no idead what you’re saying
  3. great, so what’s the issue?
  4. yes… thats a familiar issue with esp’s and blynk. Most of the time they don’t actually disconnect, but they loose heartbeat which cause a ‘disconnect’ (it takes too long for the code to send a ‘I’m still alive’ to blynk. This is usually the result of either VERY long routines, stacking timers or delay()'s.

This is a nice example of stacking timers, check this out.

  timer.setInterval(1000L, clockDisplay);
  timer.setInterval(1000L, rolevelSENSOR);
  timer.setInterval(1000L, moistureSENSOR);
  timer.setInterval(1000L, sendSensor);
  timer.setInterval(1000L, rainSensor);

furthermore…here’s a nice example of indentations going all over the place making code unreadable and thus errorprone:

void sendSensor()
{
float h = dht.readHumidity();
 	float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

  	if (isnan(h) || isnan(t)) 
{
    		Serial.println("Failed to read from DHT sensor!");
    		return;
  	}

  	Blynk.virtualWrite(V5, h);
  	Blynk.virtualWrite(V6, t);
  	
if(h >= humLowTrigger) 
{
      		digitalWrite(FOGGERPIN, LOW);
		Blynk.virtualWrite(FOGGERLED, LOW);
		
  	} 
else {

      		digitalWrite(FOGGERPIN, HIGH);
 		Blynk.virtualWrite(FOGGERLED, HIGH);
}

Serial.println(h);
Serial.println(t);
}

FIX THIS!! You’ll thank me later (and not only the example, your entire code!!
In case you have no idea what I’m talking about, here a correct example:

void reconnectBlynk() {
  if (!Blynk.connected()) {
    if(Blynk.connect()) {
      BLYNK_LOG("Reconnected");
	  isFirstConnect = true;
	 } else {
      BLYNK_LOG("Not reconnected");
    }
  }
}

or (matter of taste)

void reconnectBlynk() 
{
  if (!Blynk.connected()) 
  {
    if(Blynk.connect()) 
	{
      BLYNK_LOG("Reconnected");
	  isFirstConnect = true;
	 } 
	 else 
	 {
      BLYNK_LOG("Not reconnected");
    }
  }
}

and as it happens, that example is also very useful to get blynk reconnected!! Put the function on a e.g. 30s timer (so it runs every 30s) which helps with the reconnect.