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
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.
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