As a lot of IoT microcontroller WeMos D1 mini (esp8266) have some power saving mode.
Here we are going to see the behaivor of Wemos D1 with deep sleep mode.
This procedure is good for esp32 also.
WeMos D1 mini (esp8266), the three type of sleep mode to manage energy savings – Part 4
https://www.mischianti.org/2019/11/21...