ESP8266 Community Forum

- Fri Jun 05, 2015 4:32 am #19531 Thanks for the info

- Fri Jun 05, 2015 12:09 pm #19575 What sort of value cap would you recommend?

Deepsleep is done by putting a small cap across reset and XPD which is GPIO16 on the ESP8266-ESP12.

The function is
const int sleepTimeS = 20;// Time to sleep (in seconds):
ESP.deepSleep(sleepTimeS * 1000000);
This will stop it for 20 seconds and the program will start from the top again.

If you put a direct connection across instead of a cap it just keeps reseting

On the power thing the datasheet in the wiki above says the chip is good for 25% of 3.6 V which I take to mean it keeps operating down to .9 of a volt input. Note however that there is supposed to be a 450 mA pulse going out each 100 msecs . Don't quote me on that I'll try to find the source post

- Fri Jun 05, 2015 12:26 pm #19579

Deepsleep is done by putting a small cap across reset and XPD which is GPIO16 on the ESP8266-ESP12.

A cap? I read a direct connection between GPIO16 and the reset pin. From my understanding when the chip comes out of deep sleep it pulls GPIO16 low and if GPIO16 is connected to the reset pin then the chip will reset which brings it out of sleep.

- Fri Jun 05, 2015 1:17 pm #19582 Give it a try George . I was running at 4.76 Volts when I tried this and it kept resetting. Sparkfun have a board out called thing which also uses a cap . Thats where I got it from .
Froggy a small .01 microfarad ceramic is what I used last but I had a larger greencap which worked too.
Amazing what a difference actually doing a thing makes

Last edited by tytower on Fri Jun 05, 2015 6:01 pm, edited 1 time in total.

Get you modules here:

https://www.banggood.com/custlink/KvGGhGF4wG