ESP32 deep sleep current

[Zim]

HI
I can't get less than 10ma current draw in deep sleep. Its a "ESP32-wroom-32u". Am I missing something, or is this as good as it gets?

Thanks
Zim

[Zim]

I changed the 3.3v reg to a 7833. Now its down to 9ma from 10ma.

[Zim]

Going to use a AT41 timer instead

[Zim]

Change of plans. Found a timer, good for up to 40 days and less than 40uA. for under a dollar. C005

[lyizb]

Can you provide a link, please? And notes on how you plan to use it?

[cicciocb]

I think he is talking about this

https://westsideelectronics.com/delay-timer-ic/

[Zim]

Yes thats the one cicciocb. Of course it will take a month to get it here from Aliexpress.

Zim

[Zim]

lyizb
Check this out for good info on how to use...

https://www.instructables.com/The-Best- ... uinoville/

[lyizb]

Excellent find, thank you. Looks to solve a problem I'm looking at.

26 cents apiece U.S. for 10, including shipping: https://www.aliexpress.us/item/3256802110786079.html

Can you post your entire powering circuit? If it would work, the current from the module might be sufficient to switch a low-side mosfet to power on an ESP. Any reason why low-side wouldn't work?

What circuit would be appropriate for high-side, assuming that the approximately 30mA from the device wouldn't directly power an ESP32 S2Mini (which when idling seems to take about 50mA).

[Zim]

lyizb
that is exactly what I'm using it for, and how I plan on connecting it. I think the link I posted has some examples for hook up....
Another option may be to use the ESP stand alone module with no overhead on a breakout board. I will also look into that...


Zim