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:
wemos D1 mini - wake ok:
ESP07-S wake NOT ok:
ESP12-S - wake NOT ok:
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
Source: esp8266/Arduino