[Rob Cole] embarked on an ambitious project to create an enhanced version of the Valve Index VR controllers, known as Project Caliper. His goal was to bring optimal ergonomics and modularity to these handheld devices. Initially intending to launch it as a commercial product through a startup, he reconsidered due to challenges such as manufacturing delays, semiconductor shortages, and high development costs, which made the venture impractical at that time.
Nonetheless, Rob’s project continued to evolve. A self-taught individual with a strong belief in human-centric design, he began by constructing a basic controller compatible with SteamVR tracking. He then dedicated significant effort to prototype various aspects of controller design before progressing to the development of Project Caliper, his vision for a customizable, modular VR controller. His article details the journey of this project and includes numerous prototype images for those interested in the intricate process involved in creating a handheld device. Among his discoveries was the placement of a small vibration motor on a dorsal strap of one prototype, aimed at providing feedback due to the hand’s sensitivity at the back. Surprisingly, the vibration sensation applied to the back of the hand felt as if it were coming from inside the hand itself.
While the future of Project Caliper as a consumer product remains uncertain, Rob continues to refine its design and shares updates and photos on Twitter. Developing VR hardware presents its challenges, but the existing framework is now more robust, eliminating the need to create tracking technology from scratch.
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