I want to ask if it's possible to power the nano with both solar and battery.
I would like to have this both power method separated.
What I want to realize is that my nano can use the battery first and if it's out of battery then turn the power to solar power, is it possible?
It is possible, but not reliable, depending of total power of the panel, current consumption...
Read this my post: Solar Panels Science Project - #7 by system - Project Guidance - Arduino Forum