Thank you again, Archibald. Everything is working now. Two alkaline AA batteries and booster. I disabled the Brownout detection btw. Gonna test how long the batts will last on 1min deep sleep. The wake actions are BME280, NTP and MQTT. EDIT: ...aand 45 minutes later test finished LOL. The booster is...

Thank you sir i will test it right now!

Please guys, i really need help. I tried external power supply - the same SW_CPU_RESET again and again. No BOD message at all. Tried on a second board - the same. Does anyone with Doit esp32 2x18 pin version have any success powering it using the Vin pin? I cant find schematic for this board at all....

Well, i connected an external uart chip and the board is constantly resetting with SW_CPU_RESET. I tried 10uF and 100uF on the converter's output without any luck. There is no Brownout detector message. Edit: I tried 470uF cap - the same result. BDO is set to the lowest level. Here is the log: rst:0...

Does the 3.3v vin pass through this regulator? Do i need some specific board to charge a LiFePo4 battery?

Hello guys, I am reading what i've found regarding ESP32 on battery and more i read more confused i get :) I would like to read a comprehensive topic about some successful scenarios of how you did it. May be some pinned topic. ESP32 is the first chip/dev board im using which needs 3.3V and its very ...

Almost +1 minute but i didn't calculate the seconds. This might be just my chip. Now im syncing it hourly and works fine.

Thanks, luisonoff

Point 1) will be hard to implement i think because there is not free space on the board. I will probably try to calibrate it or just sync the time every hour.

I forgot to mention that my CPU is downed to 80MHz but im not sure if this affects the RTC.

Hi guys, I have this board https://www.banggood.com/ESP32-Development-Board-WiFiBluetooth-Ultra-Low-Power-Consumption-Dual-Cores-ESP-32-ESP-32S-Board-p-1109512.html which wakes up every 2 minutes and goes to deep sleep again. Im syncing the time daily using the sntp example but the time is drifting ...