New idea/feature power saving deep sleep when idle

[virhao]

I have idea to add option for downloading actual time from internet and then esp32 could go to sleep in selected hours to save power especially when working only on battery . Example there only 2 hours a day 12:00 14:00 when radiosondes could be received in my area and rest device is wasting power doing nothing it would be nice to select working hours between 12:00 and 14:00 and when it's not working could go to deep sleep with timer to wake up to next selected time

[ckuethe]

Time is already set via NTP in the enableNetwork() function.

Aside from putting the ESP32 to sleep, you'll also want to power down the GPS and the LoRa module. There's also a setPowerSave() function in u8g2 graphics library.

https://hackaday.io/project/171304-esp32-lora-gps-bike-thing/log/176718-power-up-and-gps has some info about controlling the AXP192.