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By rpiloverbd
#93098
washburn_it wrote:Is there some "ESP8266" equipped board that absorbs less than the NodeMCU?

ESP32 has lower power consumption than ESP8266. Its current consumption is 10 micro ampere in deep sleep.
For further info regarding the low power modes of ESP32, you can see the following articles: https://www.theengineeringprojects.com/ ... modes.html
https://maker.pro/esp8266/tutorial/shou ... 6-to-esp32
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By btidey
#93099 The power consumption of boards when the CPU is in deep sleep can be dominated by peripheral circuitry rather than the deep sleep current of the cpu itself. This will be the case irrespective of it being a ESP32 or ESP8266.

This is certainly the case for the NodeMCU type boards where the onboard usb serial interface will be drawing many times the current of the cpu itself.

Raw modules like the ESP-12F draw the least current in deep sleep as it is then just the deep sleep current of the CPU itself.
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By davydnorris
#93106 agree with @btidey here - you're best off getting the raw modules and designing your own board with most of the programming stuff on a piggyback.

The experimenter boards out there are great for getting things set up and for programming, but go a module once you're up and running