Show HN: Ambient light sensor control of keyboard and screen brightness in Linux
Show HN (score: 9)
Found: November 02, 2025
ID: 2298
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Show HN: Ambient light sensor control of keyboard and screen brightness in Linux
I have always wanted cool features in Linux because I use it day to day as my OS. I have always wanted to implement this feature and do it properly: one that automatically adjusts keyboard and LCD backlights using data from the Ambient Light Sensor.
I enjoy low-level programming a lot. I delved into writing this program in C. It came out well and worked seamlessly on my device. Currently, it only works for keyboard lights. I designed it in a way that the support for LCD will come in seamlessly in the future.
But, in the real world, people have different kinds of devices. And I made sure to follow the iio implementation on the kernel through sysfs. I would like feedback. :)
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