@robert-hh I have the same impression. I had a 15 minutes deep sleep cycle running the night and the time was ~4 minutes off in the morning.

@jmarcelino I use a Lopy direct on the KPN LoRa network. What should it be in place of this part of code?

@livius Agreed. I was going to use an SD Card to store config, state and logs, but now my device is no longer low power... Seems a bit off when you can switch all (that I know of) bit off.

I know this is an old post but for me this is still an issue. Any may of learning more about the specifics would be very much appreciated e.g what does pycom.nvs_get(key) return? Should I see somthing in the REPL? Example: >>> lora.nvram_save() >>> l= pycom.nvs_get('lora') >>> print(l) None Am I going about this in completely the wrong way?

@jcaron Sorry, yes you are correct, looks like I need a stronger morning coffee! @combaindeft The Pytrack has the same functionality as the deepsleep shield built in, the example code should be very similar and can be found here: https://docs.pycom.io/chapter/pytrackpysense/apireference/sleep.html

@seb Yep! That fixed it. Thanks! Cheers, Thomas

@cduplouy I am also getting around 15mA during deepsleep. I tried with 3.3v and 3.7v using resistor but then it is not sufficient power for the pycom to run.

@fred said in When is the Deep Sleep Shield required?: Ultra Low Power mode is available on the devices straight out of the box. It's probably also worth mentioning that it doesn't work...

Yes they are, just email sales@pycom.io and they'll sort you out

@iber Just for the info if you need some details https://forum.pycom.io/topic/1022/root-causes-of-high-deep-sleep-current

@gruia-nichita You don’t need the deep sleep shield on the Pysense/Pytrack, that functionality is built in.

You can get the wake reason using ds.get_wake_status(). I think the default is that there are no other wake-up sources configured, but you may try to disable_wake_on_fall(['P10','P17', 'P18']) and disable_wake_on_raise(['P10','P17', 'P18']) just to be sure. Full details here: https://docs.pycom.io/chapter/datasheets/boards/deepsleep/api.html

@bradnz Exactly which version of deepsleep.py did you use? There are many commits which mention version 1.0.0 for this file. I am trying your solution, but it's not working for me on LoPy.

Further to this, I have found even more weird. I simply cannot get this Pycom SiPy device with a deepsleep module attached to wake every 30mins. Its so random. @crumble if I needed to fix the floating pins issue, what resistor size would you suggest, and would this be pull up or pulldown? Also what commands in the SW would I need to ensure that P17/P18 doesnt wake the module from deepsleep if I do this? (Assuming of course that these are the only two pins I need to control - P10 is used to communicate with the deepsleep module, but I dont think this needs a pullup / pulldown on my board?) Any help would be appreciated. Cheers.