ESP8266 Community Forum

- Mon Nov 14, 2016 3:31 pm #58155 I have this board

http://www.getmicros.net/wp-content/upl ... SP8266.jpg

It says on one pin (top right) RX <- D0. Because I found that for waking up from deep sleep I should connect RST to D0(GPIO16) this might be the right pin for enabling waking up.

But my board does not wake up. I used

Code: Select all  ESP.deepSleep(50 * 1000000);
delay(500);

and I can see that power consumption goes down, but I can not see that my chip restarts. I guess RX <- D0 is something totally different than D0...what do I have to do for my board to wake up?

- Tue Nov 15, 2016 3:36 am #58171 unfortunately the Wemos R1 (not mini) has gone through a lot of undocumented changes (no schematic for old designs available). And specially D0 has a history, looking at the pinout of various versions. So best advice is to check with continuity tester from ESP module to pins for finding correct one.
Additionaly there is a 100nF capacitor on rst, maybe that is hindering the signal from gpio16 to "go through".

summary: Wemos D1 is not the best choice for deep sleep experiments.

- Fri Nov 18, 2016 6:35 pm #58352 Thank you, that explains a lot. I switched to NodeMcu board and deep sleep works as expected now.