Achieve low power on v3

[etix]

Hi,

I’m currently trying to achieve low power standby on the V3. Following this example on a board without any external component and powered by a 3.7v li-ion I can’t go below 80µa in standby. All the libraries and boards are up to date.

What did I miss? Could it be a library that got updated with a regression?

I’m curious if other people can reach the ~20µa with this example.

Thanks!

[LIM PHANG MOH]

Hi,
Pin A5 has since been connected to the battery monitoring resistive divider network. Just do a analog read on pin A5 but leaving out it’s pin mode configuration for that particular pin. So, that code needs some update.

I tested every single board that goes out of the door, they are all 20 uA maximum during sleep else they go inside a reject bin.

Hope that helps.

[etix]

Indeed, that was the reason.

The way pins are setup in the ttn-otaa-sleep.ino example on github works exactly the way it should.

It would be nice to unify and update the examples for V3 and maybe create a dedicated page to explain which pins could be safely put in INPUT_PULLUP to improve battery consumption.

Anyway, thanks a lot!

[Author]

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