GaussMarbles: Spherical Magnetic Tangibles for Interacting with Portable Physical Constraints
summary
GaussMarbles presents a system of eight 3D-printed magnetic spheres using a magnetic polyhedron core and an analog Hall-sensor grid mounted behind a tablet to track rolling balls in real time; measurements use 160,000 bitmap samples across five positions and four heights to evaluate centroid features, finding bipolar centroid-of-mass most stable, polyhedra enable Z tracking, more faces increase accuracy, and smaller faces slightly improve precision.
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