Hi,
I have a dozen or so units on trial in the field and despite doing all the latest firmware updates (to 1.1.9) I still have problems with the modules crashing and becoming unresponsive.
It seems a random error, but normally after 2-3 weeks of normal operation they go offline and I have to go and physically reboot the MKRs on site after which they run as normal.
Its a very simple app which sleeps for 4 hrs (using ArduinoLowPower.h library) and then sends in its own battery voltage and goes back to sleep and if it doesn't get a response from my app does a self reboot after 11 loops (x 4hrs). I get the same problem whether I reboot or not.
Vcc is still around 2.8/2.9V before they disappear. I am using Multitech Conduits (v 1.6.4) running the standard packet forwarder to TTN with a 24hr self reboot to keep them alive. (A different problem).
So my questions are:-
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does anyone experience similar instabilities with the MKRWAN or ArduinoLowPower libraries
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is there a better LoRa library than the standard one?
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has anyone run a live field app for more than 3 months with 100% uptime?
Any help or thoughts appreciated as I have run out of ideas!