I keep disconnected on Blynk

[PeteKnight]

You have a number of issues.
First of all, your choice of GPIO pins for your sensors (GPIO 0-5) is not great…

@Ruigi_Baet

#define DHTPIN0 0
#define DHTPIN1 1
#define DHTPIN2 2
#define DHTPIN3 3
#define DHTPIN4 4
#define DHTPIN5 5

The ESP8266 doesn’t really have 6 pins that are suitable for this. You should read this:

ESP8266 GPIO pins info, restrictions and features

hi blynkers! the esp8266 mcu is widely used in iot projects. however, most gpio pins on this mcu have special / multiple functionality and are not safe to use in all circumstances. these “features” are still not well documented and not explained in a friendly manner for newbies. i see lots of cases when the “issues” are simply caused by not knowing which pins to use in which case. [esp8266 pin features] here is a basic table for startup. i’ve collected the info from various sources on the i…

and don’t forget that the “D” numbers screen-printed onto a NodeMCU or Wemos D1 Mini are not GPIO numbers.

You are also doing the equivalent of 15 Blynk.virtualWrite operations one after another (the Blynk.Notify and LED.on/off commands are effectively the same as Blynk.virtualWrites). This is going to cause you problems…

@Ruigi_Baet

    digitalWrite(RELAYPIN, LOW); 
    Blynk.notify("LED ==>> ON");
    LED.on();
    Blynk.virtualWrite(VPINRELAY, 1);
  }
  Blynk.virtualWrite(V1, h0);
  Blynk.virtualWrite(V2 , t0);
  Blynk.virtualWrite(V3, h1);
  Blynk.virtualWrite(V4 , t1);
  Blynk.virtualWrite(V5, h2);
  Blynk.virtualWrite(V6 , t2);
  Blynk.virtualWrite(V7, h3);
  Blynk.virtualWrite(V8 , t3);
  Blynk.virtualWrite(V9, h4);
  Blynk.virtualWrite(V10 , t4);
  Blynk.virtualWrite(V11, h5);
  Blynk.virtualWrite(V12 , t5);

Also, please don’t use Blynk notifications in this way, write the data to a value widget or similar, and save the notifications for unusual events.

Pete.