Feather M0 RFM69 433MHz

[zboblamont]

Would any users of these devices be able to advise whether the power transition between USB and Lipo is per a UPS ?

I'd looked at these initially but decided on 328 devices which at that time I knew worked with MySensors.
Only 4 remaining pins available on the 328 was one limit, the other was power transition - From USB to battery no problem, but restoration of USB power caused a reboot - In reality only a problem for one Node on dual power sending in water meter readings.
Having now damaged two of the 328s (don't ask), now looking for replacements with a little more capability (multiple interrupts + extra pins), so looking again at the Feather M0.

Thanks in advance