ESP32 power conditioning

All ESP32 boards running MicroPython.
Target audience: MicroPython users with an ESP32 board.
ARTaylor
Posts: 29
Joined: Fri Mar 23, 2018 4:04 pm
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Re: ESP32 power conditioning

Post by ARTaylor » Fri Mar 30, 2018 3:36 pm

Capstan wrote:
Fri Mar 30, 2018 2:44 pm
The firmware has a brownout detector, I think it shuts things down when voltage drops below a critical value, but I was seeing some odd behavior in my experiments where the filesystem could get corrupted before that happens. Reads would result in bad data, and on several occasions I had to reflash the filesystem image. My suspicion is that the flash memory is more susceptible to low voltage or inadequate current supply than the other ESP32 components.
Is this in relation to deep sleep?

Ok perhaps it would be more valuable to test current consumption properly before doing another battery test...
Grow something!

Capstan
Posts: 115
Joined: Sun Jan 29, 2017 4:03 pm
Location: Texas, USA

Re: ESP32 power conditioning

Post by Capstan » Fri Mar 30, 2018 7:03 pm

Yes I did a number of current measurements in conjunction with deepsleep and other modes. If you would be able to take some similar measurements and post here I would appreciate it.

keiser1080
Posts: 3
Joined: Mon Apr 23, 2018 5:36 pm

Re: ESP32 power conditioning

Post by keiser1080 » Mon Apr 23, 2018 5:54 pm

[quote=ARTaylor post_id=26517 time=1522364069 user_id=3848]
I'm looking for the same answer as you capstan - did my usual thing of posting before searching :P I have a 1000mAh lipo battery and at full charge will run my application for 10 hours - I'm using the machine.deepsleep module now and got up to 72 hours - this is the app running for under 10 seconds with 15mins of sleep in between - I expected a bit more?

I have good bench supplies in my lab in work that report current, but I am not back in until the 5th of April - I have a couple Lolin32 lites and Lolin32 pros - happy to run any tests you send my way

my other thread is here with a bit more info: [url]viewtopic.php?f=18&t=4588[/url] but I put an edit in to redirect here...
[/quote]

check the two following video, the other have both loli32 & lolin light
He say the best is to power the board using the 3.3v pin:

https://www.youtube.com/watch?v=s2JAqwg4udY&t=3s
&
https://www.youtube.com/watch?v=k_7eZ5ZpSMY

I see your github project, very interesting!
I also own a lolin32 light, are you using the loboris mycropython?
actualy i have an issue described in this post http://loboris.eu/forum/Thread-extremly-slow using the board from aliexpress => https://fr.aliexpress.com/item/ESP32-ES ... 83134.html

Doyou have the same issue?

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