> How good this is, ie. how close the reported values get to reality, and to what extend the noise is inherent to the sensor I have no idea though, lacking a ca

> How good this is, ie. how close the reported values get to reality, and to what extend the noise is inherent to the sensor I have no idea though, lacking a calibrated reference to compare this to. Based on suggestions found online on how to reduce the noise by hardware modifications I have to assume most of that is coming from the sensor. One idea is to put a load of known impedance and check if the reported values matches the theoretical power consumption.