InfluxDB+Grafana persistence and graphing

[martiniman]

Here is how to graph minute consumption from counter, and convert kW to W (using math in Grafana)

ITEAD Sonoff switches and sockets - cheap ESP8266 Wifi+MQTT hardware

I got result with measurement of low power loading with Sonoff POW. First I set EnergyRes to 5. I took Total value with Teleperiod=60s and compare it with previous value. Measurement is very accurate with resolution below 1W (compare with Power W from teleperiod stats). Here is grafana setting for Total measurement. [image] And in rules i calculate consumed power fo 1 min: var Number WashingMachine_Consumption = (ESP_SonoffPOW1_Total.state as Number - ESP_SonoffPOW1_Total.histor…