A Continual last 14 day value accumulation - Circular Buffer

[PeteKnight]

This is one approach…

Rain gauge - ESP8266 Devkit - Blynk

I guess it depends on what you’re trying to achieve. As I said before, I want to see rainfall in millimetres over various time periods - the last minute, rolling 60 minutes, rolling 24 Hours etc. For that reason I use arrays and write the values into the arrays. Take the rolling 60 minute total as an example of how I do this… I use a variable to store the rolling 60 minute total and a pointer to tell me which array element to write into. Once I’ve run for 1 hour, all the array element are po…

You could also save the values to SPIFFS of LittleFS of you’re using and ESP MCU so that your data is protected against power failure.

Pete.