Automatic Brightness Adjustment for Dell Displays

Tool to automatically adjust the brightness of dell displays which are compatible with the dell display manager

Dependencies

Working Installation of the dell display manager. Running on a windows OS, using the dell display manager API.

Features

Define a characteristic curve over a whole day, this tool will automatically set the brightness to the selected values

First Usage

1. Install Dell Display Manager
2. Install Python 3.9 Interpreter
3. Define a characteristic_curve:

(currently linear interpolation is used, the characteristic curved is being sampled for each minute of a day - that should be more than enough in precision)

This is an example config.json file:

{
  "ddm_path": "C:\\Program Files (x86)\\Dell\\Dell Display Manager\\ddm.exe",
  "characteristic_line": [[0,1],[60, 1],[120, 1],[360, 10],[420, 13],[480, 16],[600, 85],[720, 100], [840, 100],[1020, 15],[1440, 5]]
}

edit the characteristic_line list of x,y datapoints to enable a different characteristic curve. Syntax of the datapoints: [<minute of day>,<display_brightness_percentage>]

4. Start the app with a python interpreter: python main.py

Disclaimer

This is a side project for my own convenience, I was often changing display brightness during the day. Do not expect fixes regularly. If something breaks, please fix and create a pull request. Any contribution is appreciated.

Collaboration

Any contribution is appreciated. Implement new Display Support, or improve characteristic curve generation

Feature Ideas

1. Current Solution needs a fixed characteristic curve. Maybe there is a way to generate a curve, depending on the current locations sunrise and sunset?
2. Incorporate a light sensor, to set display brightness based on measurements?
3. Include similar display API's for different manufacturers
4. Setup as a windows service, to run in background?
5. Include different OS support?
6. Change to a better interpolation method, than linear?