Senspectra is a computationally augmented physical modeling toolkit designed for sensing and visualization of structural strain. The system functions as a decentralized sensor network; it consists of nodes that are each embedded with computational capabilities and a full-spectrum LED, which communicate with neighbor nodes to determine a network topology through a system of flexible joints. Each joint uses a simple optical occlusion technique as an omnidirectional bend-sensing mechanism to sense and communicate mechanical strain between neighboring nodes, while also serving as a data and power bus between nodes. The Senspectra infrastructure provides a flexible, modular, sensor-network platform whose primary application focuses on coupling physical-digital modeling techniques utilized in the architecture and industrial design disciplines with systems for structural engineering analysis, offering an intuitive approach for physical realtime finite element analysis.