Random Hangs of emonPi/emonSD

[mdagli1 (Matthew Daglish)]

Anyway to log low voltage events? My little USB UPS reduces PSU stresses:

Auto shutdown (when USB supply voltage drops)

OK, the hardware bits are coming in soon, I can begin assembly and conducting checks today. This is the basic circuit but will need to make refinements as I go along: Feedback welcome! (I’m using KiCad) [Screenshot 2022-03-15 163600] (edit: improved image clarity) (edit2: updated layout)