I would like to know if there is a way under KDE Plasma to adjust automatically the brightness of the screen with the help of the webcam (adjusting with ambient light) under Wayland ?
Maybe a bit late and not entirely on topic. I have been looking for a solution to control the brightness of my external monitor for a while but haven’t found anything. I looked into Clight and it was working fairly good, but it was very much adapted for a laptop and the UI was sometimes a bit buggy.
By happenstance I found a github repo which is a python script/cli application that lets you control a lot of things via DDC/CI (including brightness/luminance). If you are a bit familiar with Python I think it would be fairly easy to create something that suits your needs. At least that is my intention!