battery vcc measure problem

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skittlez · #1 Post by **skittlez** » 12 Sep 2019, 15:11

Hi,
I have a lipo battery connected to a ldo 3.3v regulator that is powering my esp8266.
This works fine however I want to monitor the 3.3v and then detect when it just starts to drop out which will indicate that the battery is getting too low.

I am using the vcc bin, I added "analog internal" as a device but it reports a measurement of "-1"

I have nothing connected to a0

What am I doing wrong?

Thanks for any help

grovkillen · #2 Post by **grovkillen** » 12 Sep 2019, 16:41

Shouldn't you use VIN?

TD-er · #3 Post by **TD-er** » 12 Sep 2019, 21:46

The VCC build allows the "system info" plugin to report the VCC.
The analog input (ADC) plugin cannot be used with the VCC build.

This one has bitten me too last week

And yes this should be changed

skittlez · #4 Post by **skittlez** » 13 Sep 2019, 00:57

TD-er wrote: ↑12 Sep 2019, 21:46 The VCC build allows the "system info" plugin to report the VCC.
The analog input (ADC) plugin cannot be used with the VCC build.

This one has bitten me too last week
And yes this should be changed

Ah ok, worked it out: generic system info device
Thanks!

battery vcc measure problem

battery vcc measure problem

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