Heltec Lora 32 v3

#1

Hello,
I‘m using the Heltec lora ESP 32 v3 together with a battery, which is charged with the port on the devise. This is pretty working well. However I‘m wondering about a function to read out the actual battery voltage directly in order to implement a function to get a notification about a week battery. This without any external measures like voltage divider and GPIO with AD input.

#2

There are several threads in this forum that deal with the issue of battery voltage measurement (just try searching for “battery voltage”) and the discussion here also provides a bit of background on the circuitry provided on the Heltec boards.

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#3

Thank‘s
This helped me