I know this is way old, but the deep sleep with an interrupt is the best solution. deep sleep uses near zero power. It could last on a small battery for months and months without being woken up. I think Deep Sleep power consumption is 10-15 uA. Also, get a better voltage regulator if you have quiesc...

My issues continue.... Some minor improvements after adding additional capacitance on the input to the voltage regulator. Seems that this may be related to breadboarding. My ESP32 worked better when I connected the voltage regulator directly to the ESP32 3.3v input, outside of the breadboard. Still ...

I know this is a really old post, but wanted to see what the final outcome was. I was seeing the brownout issues myself today. I historically have had no problems, not sure why I'm seeing it now. I did recently start working with a battery circuit, so maybe that's related. I was seeing the brownout ...

Interesting. I swear the millis was not restarting when I first started coding. But now it is restarting. Very odd. I ended up just making a bootCount and bootCountRefresh stored in RTC memory, where both will increment every boot, and then after bootCountRefresh reaches 5, it will reset to 0. Syste...

I have been working with an ESP32 development board for a day now. I had code that was working with the deep sleep and millis(), but now it seems to have stopped working. The millis() timer appears to be resetting when it comes out of sleep. I made a simple sketch to show the problem: //Sleep #defin...