The power supply is 5V, I'm using a LM1117 linear regulator to step down voltage to 3.3V
I have 10k pull up resistor on GPIO0 and a relay module connected to it.
This works fine but when I first power up the power supply, the esp doesn't boot up. I have to unplug the psu and then plug it again, then esp blinks and boots.
I was able to recreate the problem by plugging it to my lab power supply and increasing voltage slowly from 0V to 5V then the esp doesn't boot up.
I also tried to add a resistor to put load on it (400mA) and this doesn't help.
Does anyone see what's the problem here ?