BME280 reading absurd values after connecting to Blynk

Solved
2

A wiring diagram would be helpful.

There are a few things that jump out at me immediately.

  1. You should remove check(); from your void loop, and use a BlynkTimer to call this function instead.
    Read this:
    https://docs.blynk.io/en/legacy-platform/legacy-articles/keep-your-void-loop-clean

  2. The 150 second delay in closewindow and the 130 second delay in openwindow will cause Blynk disconnections. You should use non-blocking BlynkTimers in Timeout mode instead. Read this:
    Using BlynkTimer or SimpleTimer

  3. This makes no sense:

void wifi_publish(){              //Every value is sent twice, once for the Display and once for the Value graph.
  Blynk.virtualWrite(V0, temp);   //send Temperature
  Blynk.virtualWrite(V1, temp);   //send Temperature
  Blynk.virtualWrite(V2, hum);    //send Humidity
  Blynk.virtualWrite(V3, hum);    //send Humidity
  Blynk.virtualWrite(V4, pres);   //send Pressure
  Blynk.virtualWrite(V5, pres);   //send Pressure
  Blynk.virtualWrite(V6, v);      //send windspeed
  Blynk.virtualWrite(V7, v);      //send windspeed
  Blynk.virtualWrite(V8, b);      //send brightness
  Blynk.virtualWrite(V9, b);      //send brightness
  Blynk.virtualWrite(V10, r);     //send rain
  Blynk.virtualWrite(V11, r);     //send rain
}

You should be connecting the display widgets and the Superchart datastreams to the same virtual pin.

//Get values from server======================================
  BLYNK_WRITE(V12){
  v_set = param.asInt();
  }
  BLYNK_WRITE(V13){
  temp_set = param.asInt();
  }
  BLYNK_WRITE(V14){
  hum_set = param.asInt();
  }
  BLYNK_WRITE(V15){
  b_set = param.asInt();
  }

This code ONLY gets the values from the Blynk server when these values change. You need to add…

BLYNK_CONNECTED()
{
  Blynk,syncVirtual(V12);
  Blynk,syncVirtual(V13);
  Blynk,syncVirtual(V14);
  Blynk,syncVirtual(V15);
}

in order to force the Blynk server to send these values when the device connects or re-connects to the server.
Without this callback function in place, the sketch will use the hardcoded values for the v_set, temp_set, hum_set and b_set variables.

Pete.