ESP8266 Community Forum

hi,

I have a simple sensor done with a node-mcu (esp-12) that uses deep sleep and wakes up in the normal way, via the pulse from gpio-16.

I'd like to use the esp-01s module instead, the problem, of course is that gpio-16 pin is not available. In the particular model I have, there's even some small SMD components right in front of the gpio-16 pin, so, soldering a small wire between this pin and the reset pin is even more difficult.

My question is if it is possible to use an external device like this one http://www.ebay.com/itm/5PCS-Multifunction-Delay-Trigger-ChipTiming-Module-Timer-IC-Timing-2s-1000h-/311514571224 to do the hard work. Is there a "recommend" device ?

BUMP !!

Came on no one ?

I'm sure I'm not the only one wanting to use ESP-01S as remote sensors that need deep sleep in order to increase battery duration.

Of course, those external timer devices will work.
But be aware that your code won't be able to distinguish between wakeup from deepSleep and normal reset or powerup.

From the very little info available for that devices it is not clear if they can generate the kind of pulse needed to wake up the module. And I have no idea about how much power those things use.

I know about the TPL5010 IC, that looks to be just what is needed for this application but I don't know enough about "real" electronics to make a circuit with it.

I was looking for examples when I found those devices on ebay. But so far haven't been able to locate nothing about using them with the ESP-01S.

The wake up code is not a problem, I have it running in a node mcu and it don't need to know if it comes from power down or from deep sleep. It just connect to the wlan, read the sensors and do a GET to a php script, then goes to sleep again. All this could well be done by an ESP-01S module which is smaller and probably wastes less power.