Developing an NVDA Add-on: Adapting UPS Software for Visually Impaired Users

The author, a visually impaired user of the NVDA screen reader, encountered accessibility issues with the PowerManagerII utility for their ExeGate LLB-3000 UPS. The standard software was not designed for keyboard navigation or screen reader compatibility. Together with a developer known as Codex, they created a custom NVDA add-on. The project involved analyzing graphical interface elements, implementing keyboard navigation, adding text-based output for device readings, and ensuring full control over UPS functions. The article details the technical aspects of the development, the interface adaptation process, and the challenges faced in making the software accessible to users with visual impairments. This project highlights the importance of inclusive design and the power of the community in addressing accessibility gaps in commercial software products.