ESP8266 Community Forum

- Thu Jul 21, 2016 11:20 am #51191 For periodic wake up from deep sleep, a resistor (value depending on your pull-up on rst-pin) or schotky-diode between gpio16 and rst is recommended (no direct connection).
(Might also work with small cap 0.1uF, not tested yet)

At least the red power led should be removed to take advantage of deep sleep ...
the few flashes of the blue led during wake upare not relevant if wifi is used ...

- Thu Jul 21, 2016 11:29 am #51193 Are you talking about an esp 01 here? From what I have seen it needs a direct wire between the chip and reset

Amazing selection of ESP8266 and ESP32 modules can be found here.

- Thu Jul 21, 2016 12:40 pm #51195 Hi,
yes I am talking about the ESP-01 and no, not everything you read on the internet is true.
You may succeed with a direct wire for the first flash but on consecutive flashes you will have a hard time to enter bootloader mode: hard to reset device - rst going low - if gpio holds it high.
Odd chance that gpio is the looser battling against a push-button to gnd; equal chances if rst is via rs232 line.
technically sound solution is diode/resistor/(cap).

- Thu Jul 21, 2016 12:53 pm #51196 Of course, you will need precise soldering skill for ESP-01.
http://hackaday.com/2015/02/08/hack-all ... eep-sleep/
As @schufti said, better use resistor/diode right away instead of straight wire.