ESP8266 Community Forum

Hi, I've got a battery powered application where I need to wake up the ESP8266 from a deep sleep.
From what I've been able to gather, this is best done by pulling the RESET pin low for a minimum of 100us.
So my project is set-up to make this happen but I'm having intermittent problems where the chip does not emerge from the reset trigger signal in a stable condition.
I've tried pulling GPIOs 0 and 2 high, but this has not completely fixed the situation.
What additional steps can I take to ensure that the chip boots up stably from deep sleep?

Hi swede,
I suggest disconnect terminals Tx Rx from the transmitter USB/RS232. It is good to add to the Rx input pullupp rezistor 10k.

when uploading your sketch be sure to select DIO mode (instead QIO)
this is one known reason for such behaviour

Do you have pullups also on CH_PD and RES ?