RAK4630 power consumption in sleep mode over 900 ua

[Gil Madeira]

I'm developing firmware for a RAK4630 for IOT purposes. According to the datasheet, the average consumption of the nrf52840 is 1.5 ua in system ON mode. Mine is measuring over 900 ua which is oddly high for what I have already seen. The application is quite long (+5000 lines of code) so it would be hard to explain. So my question is:  how can i force the conditions used in the 1.5 ua experiment in my project in order to reduce its power consumption? 

[Sigurd Hellesvik]

Hi,

Which version of the SDK do you use?

Regards,
Sigurd Hellesvik

[Gil Madeira]

Hello,

I'm compiling and uploading the project using the PlatformIO extension in VScode

[Sigurd Hellesvik]

Our official SDK is the nRF Connect SDK, so I do not have experience with PlatformIO.

However, my suggestion either way is as follows:
Try to run some examples other than your application and have a look at their current consumption. This will give you some feeling for how much current simple projects consume. Also, this method often turns out to have some examples that show current consumption similar to what you see.

Other than this, it can be useful to get an accurate graph of the current drawn (for example using the Power Profiler Kit 2). Then you can compare this to the Online Power Profiler current and see what is from Bluetooth, and which consumption could be something else.