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happytm
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#51
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by happytm » 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 .
Thanks.
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izeman
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#52
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by izeman » 04 Dec 2019, 08:57
happytm wrote: ↑03 Dec 2019, 21:02Maybe 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 .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.
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TD-er
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#53
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by TD-er » 04 Dec 2019, 09:23
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)
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FanOfHue
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#54
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by FanOfHue » 29 Jan 2020, 20:39
Battery powered ESP sensor. ESPNOW protocol, report every 10 minutes. Discharge curve after 3 months of operation:
- BatterySensor3months.png (133.79 KiB) Viewed 7583 times
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izeman
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#55
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by izeman » 29 Jan 2020, 21:18
My sensor with a 5000mAh LiFePo4 went down from 3.36 to 3.34 in 5 weeks. Looks promising to last a whole season.
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TD-er
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#57
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by TD-er » 24 Mar 2020, 17:03
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.
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martinus
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#58
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by martinus » 24 Mar 2020, 17:18
Cool to see that someone actually found this legacy stuff from the Nodo era
FanOfHue wrote: ↑24 Mar 2020, 15:46
I have stopped development on this forum
Any particular reason?
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FanOfHue
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#59
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by FanOfHue » 30 Mar 2020, 11:53
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!
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happytm
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#60
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by happytm » 01 Apr 2020, 00:57
Great loss to ESpEasy community. Best of luck for your new project.
Thanks.
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