ESP8266 Community Forum

- Wed May 13, 2015 7:16 pm #17337

@CptanPanic - my esp go down to 2768mV on li-ion power, so maybe this is only accu security cut-off...
http://www.esp8266.com/viewtopic.php?f=12&t=1516&p=9832#p9832

A single cell LiOn going below 3.0v!? That will shorten the life (recharge count) of the battery. Most list 3.0v as lowest safe discharge voltage, and 3.3v as a working safe discharge voltage; but check your specs; I have heard a few horror stories of melt downs discharging below this, but I have never seen it (accidents happen).

- Thu May 14, 2015 12:24 am #17342

@CptanPanic - my esp go down to 2768mV on li-ion power, so maybe this is only accu security cut-off...
http://www.esp8266.com/viewtopic.php?f=12&t=1516&p=9832#p9832

A single cell LiOn going below 3.0v!? That will shorten the life (recharge count) of the battery. Most list 3.0v as lowest safe discharge voltage, and 3.3v as a working safe discharge voltage; but check your specs; I have heard a few horror stories of melt downs discharging below this, but I have never seen it (accidents happen).

No single cell, this is 1S2P 4000mAh Li-Ion pack with PCM:
http://www.batimex.pl/zdjecia/pdf/l186501s2p.pdf
as You can read, "End Voltage" for any type of discharging are 2,75V so this is very similar to my measurements

MY GITHUB: https://github.com/reaper7/

SDM Energy Meter: https://github.com/reaper7/SDM_Energy_Meter
MLEDScroll (TM1640 led matrix): https://github.com/reaper7/MLEDScroll

- Thu Jun 25, 2015 11:40 pm #21712

I think that the read value depends on whether something is connected to TOUT

If we ever meet, going to buy you a beer.
That little throw away comment saved me a lot more hair pulling..

Pity, as I wanted to use TOUT for an analog sensor, but with a few resistors connected to TOUT I was only getting 1/10 of the reading on readvdd33 I should have got.

- Thu Aug 06, 2015 8:07 am #25184 Heyyyy my friends
Someone already saw somithings liki this
> print(node.readvdd33())
254
> print(node.readvdd33())
254
> print(node.readvdd33())
252
> print(node.readvdd33())
254

I can not understand
this work the same way when I use readvdd33()