The Weyl particle is the massless fermionic cousin of the photon [1]. While no fundamental Weyl particles have been identified, they arise in condensed matter [2][3][4] and meta-material [5, 6] systems, where their spinor nature imposes topological constraints on low-energy dispersion and surface properties. Here we demonstrate a topological circuit with Weyl dispersion at low-momentum, realizing a 3D lattice that behaves as a half-flux Hofstadter model in all principal planes [7]. The circuit platform [8] provides access to the complete complex-valued spin-texture of all bulk-and surfacestates, thereby revealing not only the presence of Weyl points and the Fermi arcs that connect their surface-projections, but also, for the first time, the Berry curvature distribution through the Brillouin zone and the associated quantized Chiral charge of the Weyl points. This work opens a path to exploration of interacting Weyl physics [9] in superconducting circuits [10], as well as studies of how manifold topology impacts band topology in three dimensions [11].
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