#9301·Arduino

ESP07-S and ESP12-S modules don't wake from DeepSleep

Author: hasenradballCreated Dec 20, 2025Updated Jan 20, 2026

Dear ESP8266 Team,

I used the ESP8266 for many years and I now bought some ESP07-S and ESP12-S modules. The essential for my project is deep sleep. What I reconized is the "s-modules" have problems with wake from deep sleep.

The schematic and wiring is shown here: ESP8266-schematic

  • G0: pulled up 10 K
  • G15: pulled down 10 K
  • RST: pulled up 10 K
  • G16: connected with RST

But it show that the RST pulses differ:

ESP01 - wake ok:

Image

wemos D1 mini - wake ok:

Image

ESP07-S wake NOT ok:

Image

ESP12-S - wake NOT ok:

Image

Result:

What has changed in wiring inside ESP modules? The ESP12-S shows the shortes pulse width of < 5 us compared to the other modules > 20 us, why?

How to get the S-modules working to wake from deep sleep? mi