Yes I was thinking about that for a while, because when I replaced ESP with new one, the problem was gone for a month... So the next devices - pcbs I cleaned with IPA very carefully, but now I think, that this problem is not caused by this. Because after several uploads of code with just setting GPI...

Good day, I would like to ask If there is anybody who can help me with problem I can´t figure out what is happening. I have several own devices on my own PCB, which are powered by Li-Ion battery and they are generaly smart sensors. Because there is need to have low power as possible, I choose specia...