ESP8266 (Wemos) smashed filesystem

All ESP8266 boards running MicroPython.
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Joined: Thu Oct 01, 2020 1:41 pm

ESP8266 (Wemos) smashed filesystem

Post by AndrewHolt » Thu Oct 01, 2020 1:49 pm


I am powering a wemos board (with temperature and humidity sensors) from a 18650 battery, via a booster to 5V.

The board sleeps for 900 seconds, takes and publishes over MQTT temperature etc, and then goes back to sleep.

The battery is being recharged periodically.

Under some circumstance I can end up with the filesystem corupted to the point that reflashing and reloading is my only option.

I suspect that low battery voltage is causing some kind of brown out, but the filesystem should survive. I am not explicitly writing anything to local storage.

Any ideas ?


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