Clight, small C linux user daemon to turn webcam into light sensor
A C daemon that turns your webcam into a light sensor. It will adjust screen backlight based on ambient brightness. - FedeDP/Clight
Clight, small C linux user daemon to turn webcam into light sensor launched on April 25, 2017 with 14 votes, #743 of 3,007 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 9 years on.
In plain words
Clight is a lightweight daemon for Linux systems that repurposes a computer's webcam to function as a light sensor. The tool enables automatic adjustment of display settings based on ambient light levels detected through the camera. It's designed for Linux users who want automated brightness and color temperature control without dedicated hardware sensors. The project is available on GitHub.
written from the facts on this page · September 2026
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