Reduce LEDs consumption Thingy91 - Asset tracker

[rqLST]

Hi,

I am trying to reduce the consumption of my Thingy91 device in idle mode. I am working with NCSv1.3 and the example asset_tracker.
I am currently registering 0.60mA but if I disable the LEDs I get a 0.10mA idle consumption.

I would like to be able to keep the LEDs on but reduce their consumption.

How could I lower the brightness power of the LEDs?

How can I reduce the frequency at which the LEDs turn on?

Thanks!

Raquel.

[Carl Richard]

Hi!

Thanks for reaching out! A good place to start would be to investigate how the LEDs are used by the asset_tracker, specifically the UI module and the led_pwm code. I suggest experimenting a bit with the defines in ui.h, for example by setting UI_LED_MAX to a lower value. You can also find the defines UI_LED_ON_PERIOD_NORMAL and UI_LED_OFF_PERIOD_NORMAL here, that can be used to limit how long the LEDs stay on/off. If you want even more control you can use the led_pwm code.

I'd also suggest moving to NCS version 1.4.x or 1.5.x if possible.

Best regards,
Carl Richard

[rqLST]

Hi Carl,

It was just what I was looking for. I have managed to reduce consumption by adjusting

UI_LED_MAX
UI_LED_ON_PERIOD_NORMAL
UI_LED_OFF_PERIOD_NORMAL

Thank you very much!!