ESP8266 Community Forum

- Wed Mar 21, 2018 11:26 am #74778

You can find below a lot of details about

thank you trackerj, I did miss some of the posts you linked, now things makes more sense to me, especially about LSB calibration.

As you say the multimeter is the key here

thanks btidey. Sorry to bother on this matter, cause i'm a real newbie at this... i'm just wondering how to evaluate current flowing in the circuit.
Should I read milliampere values at Vin of every component of the circuit, and would that value represent that module consumption?
I'll receive a new multimeter in a couple of days (atually i'm using a very cheap one, i'm upgrading to a decent one). I'll post results once done.

Some 18650 batteries can be fake and have much lower capacity than the normal 2500mAh capacity.

I suspected that... I'll test the circuit with my ecig battery (a 3000mAh sony VTC6).
To check actual battery capacity, I'm studying a proper way of measuring it with a known load as you said.
Do you have any hint on how to do it safely?

Thank you!

- Fri Mar 23, 2018 5:19 am #74841 Update: I supposed the battery was discharged when prototype stopped working after 12 hours, but I was wrong.

I mindlessly forgot to check battery voltage, and it was around 3.9v so that wasn't the cause.

When I detached and reattached the battery, prototype started working again for 10 hours before stopping again.

I suspect the circuit is missing some pullup resistors on ESP pins, probably on the RST / GPIO16 bridge, and the device is not getting back from deep sleep.

Am I right? Is this a best practice to preserve endurance?