I am trying to get my Arduino nano (V 3.0) to below 1 mA usage while sleeping (power down mode).
i disabled the power LED and directly appliad 5V to VIN.
Currently I am at 2.5 mA while sleeping. Any idea where the power is lost? Is it the 3.3V regulator? Or the serial chip?
I am not really sure how to modify it to get to my goal of 1 mA during sleep. Any ideas?