# ddc-brightness
A simple, fast command-line tool for controlling monitor brightness on Windows and Linux. Designed for easy brightness management across multiple displays. Supports increasing or decreasing brightness by a set amount.
This is a fork of [lumix](https://github.com/Yrrrrrf/lumix).
## Features
- 🖥️ Multi-monitor support
- 📊 Visual brightness indicator
- 🚀 Fast and lightweight
- 🎯 Simple command interface
- 📈 Show brightness range for each monitor
- 🎨 Formatted output
- 💯 Changing brightness by a relative amount
## Usage
### Basic Commands
- Get brightness:
```bash
ddc-brightness get ddc-brightness get 12345 ```
- Set brightness:
```bash
ddc-brightness set 75 ddc-brightness set 10+ ddc-brightness set 5- ddc-brightness set 12345 50 ```
### Output Example
```
Monitor 12345: 75% [0..=100] ██████████░░░░░░░░░░
```
Where:
- `12345`: Monitor identifier
- `75%`: Current brightness (bold)
- `██████████░░░░░░░░░░`: Visual brightness indicator
- `[0..=100]`: Supported brightness range
## Troubleshooting
### Common Issues
1. **Monitor Not Found**
- Ensure the monitor supports DDC/CI
- Verify the monitor handle is correct
2. **Permission Denied**
- Run the command prompt as administrator
3. **Invalid Brightness Value**
- Use values between 0 and 100
### Error Messages
- `Monitor X not found`: Invalid monitor handle
- `Invalid brightness value`: Brightness must be 0-100
- `Error setting brightness`: Monitor might not support DDC/CI
## Contributing
Contributions are welcome! Please feel free to submit a Pull Request.
## License
This project is licensed under the [MIT License](./LICENSE).