[SOLVED] FW16 keyboard LEDs

[James3]

Hi,

I have noticed that the FW16 keyboard LEDs use about 3W of power when on.
When it is daytime, I don’t need the LED lights.
The FW16 has an ambient light sensor, that it can be configured to auto-adjust the screen brightness.
I would like the ambient light sensor to auto-adjust the LED lights, thus saving 3W of battery during the day.
Has anyone managed to achieve this?
I guess what I would need was:

1. Way to read ambient light sensor
2. Way to read current LED brightness setting. (so I can restore it when it gets dark)
3. Way to set the LED brightness from a script, or daemon.

[Amar_Persaud]

If you don’t mind rolling your own solution, I found this for reading the ambient light sensor:

[TRACKING] "auto-brightness" aka ambient light sensor in Linux? Details?

Hi all, I installed Arch (Endeavour) on my Framework with KDE and so far everything is running pretty smoothly. One of the few details I have not figured out is the ambient light sensor. I have seen texts about other Linux Distros that seem to imply that automatic brightness might work there out of the box but nowhere could I find any details about how the sensor or automatic brightness adjustment can be used. I also could not find any system setting that refers to this function. Is anyone her…

and these threads with regards to the LED backlight:

[TRACKING] "auto-brightness" aka ambient light sensor in Linux? Details?

Hi all, I installed Arch (Endeavour) on my Framework with KDE and so far everything is running pretty smoothly. One of the few details I have not figured out is the ambient light sensor. I have seen texts about other Linux Distros that seem to imply that automatic brightness might work there out of the box but nowhere could I find any details about how the sensor or automatic brightness adjustment can be used. I also could not find any system setting that refers to this function. Is anyone her…

[RESPONDED] Controlling the keyboard backlight through /sys

Hi, I was looking into setting the keyboard backlight brightness automatically with brightnessctl but it doesn’t look like the LED is recognized by Linux. The arch wiki page on the subject says the LED should be available under /sys/class/leds, but I can only see the *lock keys LEDs, this is what I get: /sys/class/leds/input1::capslock /sys/class/leds/input1::numlock /sys/class/leds/input1::scrolllock /sys/class/leds/phy0-led I’m not sure what phy0-led is, but I tried setting it on and off and…

[James3]

Hi. I could not get anything to work with regards to the keyboard backlight.
So, I am still looking to find a way to adjust the keyboard backlight from the command line.

[MJ1]

@James3

So, I am still looking to find a way to adjust the keyboard backlight from the command line.

Framework’s qmk_hid tool provides a way to set the backlight by command line, and also get the current level github.com/FrameworkComputer/qmk_hid. For the FWL16.

I saw this thread when it was posted, but I think I failed to see that the links which were posted in response were for the FWL13 backlight.

[James3]

Thank you:
FW16 Ambient Light sensor:
cat /sys/bus/iio/devices/iio:device0/in_illuminance_raw
FW16 Keyboard backlight read:
sudo ./qmk_hid via --backlight
FW16 Keyboard backlight off:
sudo ./qmk_hid via --backlight 0
FW16 Keyboard backlight on
sudo ./qmk_hid via --backlight 100