Light UPS is a lightweight, high-performance UPS management solution built with Qt 6.9 (C++). This project provides a reliable, resource-efficient alternative to proprietary UPS software, specifically designed to eliminate connectivity issues, excessive disk wear, and cumbersome browser-based interfaces.

The idea for this project emerged after using an NHS Mini Senoidal UPS. The manufacturer's original software had several critical flaws that compromised system safety:

• Silent Connection Failures: The software often failed to detect the UPS upon system startup without notifying the user, meaning automatic shutdowns would not trigger when needed.
• SSD Wear: The service constantly wrote log files to the disk, which is suboptimal for SSD longevity.
• Inconvenient UX: Status monitoring and settings were handled via a local web server (localhost) in a browser, rather than a native application.

Light UPS solves these issues by providing a native C++ application that is both "light" on resources and heavy on reliability:

• System Tray Integration: A dedicated status icon in the tray provides immediate feedback.
• Native GUI: A compact menu and window for changing configurations and viewing a real-time log of UPS messages.
• Zero-Disk Logging: The application does not write to the hard drive/SSD. Limited, essential log messages are sent directly to the Windows Event Viewer.
• Plugin-Based Architecture: The software uses a modular driver system. This makes it easy to extend support for other UPS brands and models by simply adding a new plugin.

• Language: C++
• Framework: Qt 6.9
• Platform: Windows (utilizing Windows Event Viewer for system logs)
• Architecture: Plugin-driven driver system

The next phase of this project is the development of a low-budget embedded controller.

Currently, most UPS setups require one PC to act as a "host" via USB. My solution will move the intelligence to an external controller that can inform up to 4 PCs about the UPS and mains power status simultaneously. This removes the "single point of failure" host dependency. A dedicated plugin will be created to interface with this controller.

The project uses a QInstaller based setup. The installer handles the environment configuration through a structured wizard (Introduction, Component Selection, etc.) to ensure the service and tray application are correctly registered on your system.

Developed by the Light UPS Organisation.