Similar (I have no screenshots), I connected phone charger (constant power consumption 30 W) and after 0.5 hours I got 3 kWh. That looks useless for me.
Thanks for chiming in about the integration method. I also chose the trapezoidal method after reading the docs.
My application is related to power as well. My source will send a frequently changing power value every second which I then would like use to calculate the approximate energy in kWh.
Reading the docs about the trapezoidal method led me to believe, it would be the best method. For a non-expert the docs could be a bit misleading in my opinion. Also, trapezoidal is the default.
Trapezoidal
This method is the most accurate of the currently implemented methods, if the source updates often, since it better fits the curve of the intrinsic source.
Left
The method underestimates the intrinsic source, but is extremely accurate at estimating rectangular functions which are very stable for long periods of time and change very rapidly
OK, thanks. I will consider providing feedback. Although in this case, I don’t really think that I have a sufficient grasp of the topic to provide good feedback. I have an intuitive understanding of what the helper does, but that is about it. I have to rely on other user’s opinions in this case I’m afraid.
Well, left underestimates, right overestimates, trapezoidal should be most accurate, but only for source without any drastic power changes. In my case (and most cases I think for home devices like tv, ligths, washing machines etc), power changes are always fast from 0 to some constant level, or between 2 levels. In such cases, trapezoidal completly fails.