Add HubAudio KiCad project

hardware/kicad/HubAudio/.gitignore

@@ -0,0 +1,2 @@
+*.kicad_prl
+*.kicad_pro.lck

hardware/kicad/HubAudio/HubAudio.kicad_pcb

@@ -0,0 +1,2 @@
+(kicad_pcb (version 20260206) (generator "pcbnew") (generator_version "10.0")
+)

hardware/kicad/HubAudio/HubAudio.kicad_pro

@@ -0,0 +1,91 @@
+{
+  "board": {
+    "3dviewports": [],
+    "ipc2581": {
+      "bom_rev": "",
+      "dist": "",
+      "distpn": "",
+      "internal_id": "",
+      "mfg": "",
+      "mpn": "",
+      "sch_revision": ""
+    },
+    "layer_pairs": [],
+    "layer_presets": [],
+    "viewports": []
+  },
+  "boards": [],
+  "component_class_settings": {
+    "assignments": [],
+    "meta": {
+      "version": 0
+    },
+    "sheet_component_classes": {
+      "enabled": false
+    }
+  },
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "HubAudio.kicad_pro",
+    "version": 3
+  },
+  "net_settings": {
+    "classes": [
+      {
+        "bus_width": 12,
+        "clearance": 0.2,
+        "diff_pair_gap": 0.25,
+        "diff_pair_via_gap": 0.25,
+        "diff_pair_width": 0.2,
+        "line_style": 0,
+        "microvia_diameter": 0.3,
+        "microvia_drill": 0.1,
+        "name": "Default",
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "priority": 2147483647,
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
+        "track_width": 0.2,
+        "tuning_profile": "",
+        "via_diameter": 0.6,
+        "via_drill": 0.3,
+        "wire_width": 6
+      }
+    ],
+    "meta": {
+      "version": 5
+    },
+    "net_colors": null,
+    "netclass_assignments": null,
+    "netclass_patterns": []
+  },
+  "pcbnew": {
+    "last_paths": {
+      "idf": "",
+      "netlist": "",
+      "plot": "",
+      "specctra_dsn": "",
+      "vrml": ""
+    },
+    "page_layout_descr_file": ""
+  },
+  "schematic": {
+    "bus_aliases": {},
+    "legacy_lib_dir": "",
+    "legacy_lib_list": [],
+    "top_level_sheets": []
+  },
+  "sheets": [],
+  "text_variables": {},
+  "tuning_profiles": {
+    "meta": {
+      "version": 0
+    },
+    "tuning_profiles_impedance_geometric": []
+  }
+}

hardware/kicad/HubAudio/HubAudio.kicad_sch

@@ -0,0 +1,14 @@
+(kicad_sch
+	(version 20260306)
+	(generator "eeschema")
+	(generator_version "10.0")
+	(uuid 841d8022-3a94-443e-97aa-a99a12889684)
+	(paper "A4")
+	(lib_symbols)
+	(sheet_instances
+		(path "/"
+			(page "1")
+		)
+	)
+	(embedded_fonts no)
+)