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Re: Battery goes down WAY too fast on ESP

Posted: 03 Dec 2019, 21:02
by happytm
Maybe try "my" code. I now got the ESP directly connected to a LiPo charged to 3.5V and it didn't change it's voltage by 1/100 of a Volt after 48h. This makes me confident that it will run fine for several month (over a year) with one measurement every 15min, even with the awful 5s uptime from a 6000mAh LiFePo4.
Maybe try "my" code. In theory it will run fine for one year one measurement every 15min, from a 450mAh LiFepo4 according to this calculator at http://www.of-things.de/battery-life-calculator.php :ugeek: .

Thanks.

Re: Battery goes down WAY too fast on ESP

Posted: 04 Dec 2019, 08:57
by izeman
happytm wrote:
03 Dec 2019, 21:02
Maybe try "my" code. I now got the ESP directly connected to a LiPo charged to 3.5V and it didn't change it's voltage by 1/100 of a Volt after 48h. This makes me confident that it will run fine for several month (over a year) with one measurement every 15min, even with the awful 5s uptime from a 6000mAh LiFePo4.
Maybe try "my" code. In theory it will run fine for one year one measurement every 15min, from a 450mAh LiFepo4 according to this calculator at http://www.of-things.de/battery-life-calculator.php :ugeek: .Thanks.
Pretty sure it does work ways better in regards to battery life. But as I said: It's another "network" or "technology" that you have to implement. Maybe a bit over the top for one temperature sensor, if all other sensor work fine with the already existing infrastructure. I wish the ESP code didn't have the nasty habit to write into flash after every wifi initalisation. Then this would already help A LOT.

Re: Battery goes down WAY too fast on ESP

Posted: 04 Dec 2019, 09:23
by TD-er
Maybe we can also disable the RF calibration, unless the WiFi connection fails.
Not sure how much that will save in time, but it may save more in energy as the calibration uses quite a lot of current (short bursts)

Re: Battery goes down WAY too fast on ESP

Posted: 29 Jan 2020, 20:39
by FanOfHue
Battery powered ESP sensor. ESPNOW protocol, report every 10 minutes. Discharge curve after 3 months of operation:
BatterySensor3months.png
BatterySensor3months.png (133.79 KiB) Viewed 2192 times

Re: Battery goes down WAY too fast on ESP

Posted: 29 Jan 2020, 21:18
by izeman
My sensor with a 5000mAh LiFePo4 went down from 3.36 to 3.34 in 5 weeks. Looks promising to last a whole season.

Re: Battery goes down WAY too fast on ESP

Posted: 24 Mar 2020, 15:46
by FanOfHue
5 months, just in case anyone cares :lol:
BatterySensor5months.png
BatterySensor5months.png (72.99 KiB) Viewed 1171 times
I got a private request on the ATtiny firmware. I have stopped development on this forum but if anyone would like to continue, latest source is here:
https://github.com/FanOfHue/Other/tree/ ... nyExtender
It's really not my invention, it is based on this Letscontrolit stuff:
https://github.com/letscontrolit/NodoCl ... r/NodoTiny

Re: Battery goes down WAY too fast on ESP

Posted: 24 Mar 2020, 17:03
by TD-er
That's a very nice achievement and I guess such low energy consumption can also be covered by a relatively small solar cell, especially if you can even cover the entire winter period on a full charge.

Re: Battery goes down WAY too fast on ESP

Posted: 24 Mar 2020, 17:18
by martinus
FanOfHue wrote:
24 Mar 2020, 15:46
It's really not my invention, it is based on this Letscontrolit stuff:
https://github.com/letscontrolit/NodoCl ... r/NodoTiny
Cool to see that someone actually found this legacy stuff from the Nodo era :geek:
FanOfHue wrote:
24 Mar 2020, 15:46
I have stopped development on this forum
Any particular reason?

Re: Battery goes down WAY too fast on ESP

Posted: 30 Mar 2020, 11:53
by FanOfHue
martinus wrote:
24 Mar 2020, 17:18
Any particular reason?
There was no need for my work here and I will start working on other challenges outside ESP world.
So this will be my last post here.
Goodluck to you all!

Re: Battery goes down WAY too fast on ESP

Posted: 01 Apr 2020, 00:57
by happytm
Great loss to ESpEasy community. Best of luck for your new project.

Thanks.