Yes, low power is mandatory as the nodes will be battery powered. A quick measurement is about 4mA which is way too much drain. Quite high for a low power chip, despite the fact that it will not wake up (2uA might be okisch with all the peripherals on the board). I am not used to the power domains of the samr/saml and a quick look at the datasheet was disappointing as i realized: this is too complicated for my head. The ASF examples are no use to me cause i dont have understanding of ASF. So the route to go is to understand and analyse the ASF code and try finding the differences in the Bastwan/Arduino source…