When measuring power consumption, a very good tool is the Nordic Power Profiler Kit II (PPK2). Version 2 can deliver upto 1A and does have an incredible resolution so you can also properly measure sleep mode as well as fully powered mode. It also has several GPIO-input pins which can be included in the logs so you can set some pins to add markings when you change state. In the software you can easily compute the consumed energy over some period, which is a lot harder to measure using your USB power meter. You can also set the output voltage of the PPK2, so you can simulate energy consumption when running at different voltages.

Hello Volos, you not need to upload new software to change CPU Mhz, I do it in code: setCpuFrequencyMhz(80); // Below 80 Mhz WiFi doesn't work, low value is saveing battery power (240 Mhz is maxmum speed)

This is a hugely valuable topic! Thanks.

Just in time for my project! Needed this

Thanks! Very useful info! Just ordered several

I really like your videos and your designs. Please keep it up

sve je odlično i puno pomaže. poručio sam liligo. jedino što video gledam na 1.5 brzini 😊

I am waiting for yours project ..very nice project

Banger video Volos!

Hi Volos, Thank you very much for this very interesting video. Can't wait for part2. Could you please link that in description if available?

I am really interested in how the amoled board does. And if you can do an "always on display" like a smart watch or phone with the oled in a few milliamps of current or less and have the cpu sleep for most of the time. since you are only powering the active pixels and not a full backlight it should be possible to have a very low power consumption. IT would be helpful if you were able to turn off the display completely on these boards. so we can tell how much power the display takes, and how much the esp32 takes. Really love your videos and examples.

Your exceeding excellent video's are too SHORT! ;) Thank you so much...!!

I haven't played with the frequency as yet. Can the frequency be changed by code in a sketch on the fly? So perhaps the code and slow the speed until perhaps a touch or some reason to turn on the display?

Part 2 ???

Can you do a timer countdown with esp32 tft display+SquareLine Studio, thank you

With an e-ink screen, a refresh rate greater than a minute, no wifi, and the deepsleep of the esp32, you should be able to reach weeks, and also size the battery according to the desired duration if it is not enough. Afterwards you must remove all flashing LEDs from the board, and other voltage regulators which consume too much. In all cases it depends on the needs, on battery, you have to limit everything that is not necessary, the esp32 in deep sleep only consumes a few micro amps.

Nice!

This is the first time that i notice that it can go slower than 80 MHz. Interesting!

Are you sure the battery is directly connected to the ESP-s3? 4,35 Volt is a lot for ESP. I thing there is a low drop regulator on the board.

Hello Volos, a question about configuration, when I received the new lilygo ESP32S3, it worked on battery power, when I did the first program, it stopped working on battery, it only works on USB-C, do you know if there is any setting to activate battery power? Congratulations on helping the developer community with the tips

I keep getting this error, any ideas? "c:\Users\user1\Documents\Arduino\libraries\WiFi\src/WiFiGeneric.h:33:10: fatal error: esp_eth_driver.h: No such file or directory"

Maybe try with red color instead of white for display color, see if there is a difference.

Could you make a real life COD AI battle buddy out of an M5stack device? I know that would get a bunch of views from the COD Gamers! Who else thinks this would be a great project?