battery vcc measure problem
Posted: 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
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