Did anyone of you ever really measured power consumption of an ESP8266 on a 5V net adapter? Even with or without deep sleep options in place?
I have seen many posts on the web mentioning something like that the average power consumption of an ESP8266 is around 60 mA.
60 mA * 5V ≈ 0,3 Watt and therefore you don’t even have to think of your energy bill. And that figure is of course negligible on yearly basis.
However, I have always learnt that power consumption of an adapter/transformator based device is NOT determined by the power consumption of the device, but by the power consumption of the net adapter.
For my esps I have several net adapters ranging from 500mA output to 2.3A output.
However, the minimal power consumption is always 100 mA according to the sticker on the plug.
It says something like “Input 100 - 240 V, 100mA - 300 mA; Output 5V 2.3A”
This means that even in minimal power consumption that net adapter is using 230 V * 100 mA = 23W
On year basis that is ≈ 250 kWh and for a kWh price of approx. 20 cents (Netherlands), that is 50 Euros!!
I see posts where users proudly mention to have 10 to 26 (!) Esps in their house all running 24 hours a day.
I don’t have such an energy meter which you put in the wall outlet and where you can put the power plug of your device in, but I’m planning to get me one. To measure Esps (1) on net adapter with deep sleep, and 2 constantly on.
So did anyone really measure and can he/she share his/her results?
(not battery results, but net adapter results!)