Im currently making a project using NodeMCU ESP8266 connected to Blynk App using Personal Hotspot Connection from my iphone. Im using 2 slider on Blynk App to replicate a temperature sensor, and distance/ultrasonic sensor. The codes are:
Okay, the first thing you need to do is to change your code so that you don’t have these Blynk.virtualWrite commands in your void loop, as this will flood the server with data.
These virtualWrites need to be in a function that is called with a timer, and there can never be more than 10 virtualWrites or equivalent per second.
You should also be aware that, if you are using the the Blynk cloud servers then you’ll be able to retrieve a maximum of the last 10 day’s worth of data via the CSV export or Reports widget. This may affect your plans for using this method of data storage.
Once you stop flooding the server with massive amounts of data, I think your readings may be more sensible, but if not then maybe using a simple ROUND function in Excel will give you the data you are looking for.