Screen Brightness Control

A lightweight, cross-platform desktop GUI application to view and adjust monitor brightness, built with Python.

Features

• View current brightness - Shows brightness level of all connected displays
• Set brightness - Type a value (0-100) and press Enter or click "Set Brightness"
• Arrow key control - Up/Down arrows adjust brightness in 5-step increments with debounce
• Multi-monitor support - Handles single and multiple display scenarios
• System theme awareness - Automatically follows OS light/dark mode

Usage

pip install customtkinter screen-brightness-control
python brightness_controller.pyw

Interface

+------------------------------------------+
|  Screen Brightness Control          [-] X |
+------------------------------------------+
|          Current: 75%                      |
|  Set Brightness (0-100): [___75___]       |
|          [ Set Brightness ]                |
+------------------------------------------+

Requirements

• Python 3.8+
• customtkinter - Modern themed GUI toolkit
• screen-brightness-control - Cross-platform brightness control library

Notes

• The .pyw extension suppresses the console window on Windows when double-clicked
• Arrow key changes are debounced (50ms) to prevent rapid system calls during held key presses
• This project is also part of the python-projects monorepo