Lightsto

Lightsto is a hypothetical open standard for lighting control that seeks to coordinate large networks of light sources across domestic, commercial, and artistic environments. Designed to be device-agnostic and openly participatory, Lightsto envisions interoperable drivers, sensors, and controllers that can be combined without proprietary lock-in to achieve synchronized color, brightness, and timing.

The concept originated in online maker and design communities as a proposal by the Lightsto Initiative, a collective of engineers, artists, and researchers exploring open specifications for lighting technology. It emphasizes decoupling hardware from software, a modular data model, and a mesh communication layer to enable scalable control.

At its core, Lightsto defines a lightweight messaging protocol for lighting commands, a time-sync mechanism for precise coordination, and a common data model supporting color in perceptually uniform spaces and lighting scenes. Implementations are intended to run on standard microcontrollers and single-board computers, with reference hardware and software released under an open license.

Proposed use cases include architectural façade lighting, stage and theater rigs, and interactive installations. As a proposal, Lightsto has not achieved formal standardization and remains the subject of experimental projects and community discussions; supporters argue it could reduce vendor fragmentation, while critics warn of complexity and security considerations in open-network lighting systems.

Lightsto represents a concept at the intersection of open hardware, Internet of Things, and lighting design, illustrating ongoing interest in interoperable, community-driven approaches to modern illumination.