How do I change number of digits displayed in "value display"?

Need Help With My Project
1

I am using the adc on a esp8266 to read the battery voltage powering the unit, it is one lithium cell. I have scaled the raw adc reading to generate a realistic voltage reading and assigning it to a virtual pin. The ‘value display’ widget is showing 3 digits after the decimal. How do control this?

2

That is simple, by casting it back into an integer before calling virtualWrite. The widget will display any value you send.

More information here: https://www.arduino.cc/en/Reference/Cast

-edit with a small example:

  float h = dht.readHumidity();
  float c = dht.readTemperature();

  int tempHumid = (int)h;
  int tempTemp = (int)c;
  
  String humid = (String)tempHumid;
  String temp = (String)tempTemp;
  
  humid += "%";
  temp += "°C";
  
  Blynk.virtualWrite(V13, humid);
  Blynk.virtualWrite(V14, temp);

The above code goes from a float on the sensor, to an int for rounding up, to a String for displaying in the Value widget.