Comment by nunobrito
9 hours ago
Compared to other microcontrollers: ESP32 is very power hungry. Shiny displays are very power hungry, Wi-Fi is power hungry. So expect to draw about 5 watts/hour continuously while in operation with all bells and whistles.
With this said (I'm also using them for off-grid) you will need to put them to sleep and only use the display when absolutely needed for most scenarios. I've recently started using devices with e-paper display which at least solve that nuisance of the display power draw: https://www.waveshare.com/wiki/ESP32-S3-ePaper-1.54
The last thing to keep in mind is heating. They will warm quite a bit and you should consider a way to either keep them cooled or make them sleep enough to cooldown, otherwise they will reboot or stop working until they are cooled again.
Depends... do you need wifi, screen and others always on? can you wake some on a timer? on user interaction? on interrupts?
https://lastminuteengineers.com/esp32-sleep-modes-power-cons...
You can use those sleep modes in micropython as well
https://randomnerdtutorials.com/micropython-esp32-deep-sleep...
> 5 watts/hour
Typo I'm guessing, but I found this unit of "energy acceleration" amusing.
"Gotta go fast" :-)
In my language we say it colloquially that way, turned out wrong in English. Should have been 5 Wh.
Rather you would say it draws 5 watts. If someone is interested in draw over a period, e.g. over one hour, you'd say it used 5Wh in that period.
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