Add PCB artwork

pcb/mobo/mobo.kicad_pro

@@ -1,5 +1,26 @@
 {
   "board": {
+    "3dviewports": [
+      {
+        "name": "backside",
+        "ww": 1.0,
+        "wx": -11.276021003723145,
+        "wy": -6.674892902374268,
+        "wz": -16.000198364257813,
+        "xw": 0.0,
+        "xx": 1.0,
+        "xy": -8.026785280890181e-07,
+        "xz": 1.7555552403791808e-05,
+        "yw": 0.0,
+        "yx": -8.026785280890181e-07,
+        "yy": -1.0,
+        "yz": -1.4091464974053114e-11,
+        "zw": 0.0,
+        "zx": 1.7555552403791808e-05,
+        "zy": 0.0,
+        "zz": -1.0
+      }
+    ],
     "design_settings": {
       "defaults": {
         "board_outline_line_width": 0.049999999999999996,
@@ -63,20 +84,26 @@
       "rule_severities": {
         "annular_width": "error",
         "clearance": "error",
+        "connection_width": "warning",
         "copper_edge_clearance": "error",
+        "copper_sliver": "warning",
         "courtyards_overlap": "error",
         "diff_pair_gap_out_of_range": "error",
         "diff_pair_uncoupled_length_too_long": "error",
         "drill_out_of_range": "error",
         "duplicate_footprints": "warning",
         "extra_footprint": "warning",
+        "footprint": "error",
         "footprint_type_mismatch": "error",
         "hole_clearance": "error",
         "hole_near_hole": "error",
         "invalid_outline": "error",
+        "isolated_copper": "warning",
         "item_on_disabled_layer": "error",
         "items_not_allowed": "error",
         "length_out_of_range": "error",
+        "lib_footprint_issues": "warning",
+        "lib_footprint_mismatch": "warning",
         "malformed_courtyard": "error",
         "microvia_drill_out_of_range": "error",
         "missing_courtyard": "ignore",
@@ -86,9 +113,14 @@
         "padstack": "error",
         "pth_inside_courtyard": "ignore",
         "shorting_items": "error",
+        "silk_edge_clearance": "warning",
         "silk_over_copper": "warning",
         "silk_overlap": "warning",
         "skew_out_of_range": "error",
+        "solder_mask_bridge": "error",
+        "starved_thermal": "error",
+        "text_height": "warning",
+        "text_thickness": "warning",
         "through_hole_pad_without_hole": "error",
         "too_many_vias": "error",
         "track_dangling": "warning",
@@ -97,7 +129,6 @@
         "unconnected_items": "error",
         "unresolved_variable": "error",
         "via_dangling": "warning",
-        "zone_has_empty_net": "error",
         "zones_intersect": "error"
       },
       "rule_severitieslegacy_courtyards_overlap": true,
@@ -107,18 +138,63 @@
         "allow_microvias": false,
         "max_error": 0.005,
         "min_clearance": 0.0,
+        "min_connection": 0.0,
         "min_copper_edge_clearance": 0.024999999999999998,
         "min_hole_clearance": 0.25,
         "min_hole_to_hole": 0.25,
         "min_microvia_diameter": 0.19999999999999998,
         "min_microvia_drill": 0.09999999999999999,
+        "min_resolved_spokes": 2,
         "min_silk_clearance": 0.0,
+        "min_text_height": 0.7999999999999999,
+        "min_text_thickness": 0.08,
         "min_through_hole_diameter": 0.3,
         "min_track_width": 0.19999999999999998,
         "min_via_annular_width": 0.049999999999999996,
         "min_via_diameter": 0.39999999999999997,
+        "solder_mask_to_copper_clearance": 0.0,
         "use_height_for_length_calcs": true
       },
+      "teardrop_options": [
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 5,
+          "td_on_pad_in_zone": false,
+          "td_onpadsmd": true,
+          "td_onroundshapesonly": false,
+          "td_ontrackend": false,
+          "td_onviapad": true
+        }
+      ],
+      "teardrop_parameters": [
+        {
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_target_name": "td_round_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_target_name": "td_rect_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_target_name": "td_track_end",
+          "td_width_to_size_filter_ratio": 0.9
+        }
+      ],
       "track_widths": [
         0.0,
         0.2,
@@ -139,7 +215,8 @@
       "zones_allow_external_fillets": false,
       "zones_use_no_outline": true
     },
-    "layer_presets": []
+    "layer_presets": [],
+    "viewports": []
   },
   "boards": [],
   "cvpcb": {
@@ -361,7 +438,7 @@
   "net_settings": {
     "classes": [
       {
-        "bus_width": 12.0,
+        "bus_width": 12,
         "clearance": 0.15,
         "diff_pair_gap": 0.25,
         "diff_pair_via_gap": 0.25,
@@ -375,13 +452,15 @@
         "track_width": 0.25,
         "via_diameter": 0.6,
         "via_drill": 0.3,
-        "wire_width": 6.0
+        "wire_width": 6
       }
     ],
     "meta": {
-      "version": 2
+      "version": 3
     },
-    "net_colors": null
+    "net_colors": null,
+    "netclass_assignments": null,
+    "netclass_patterns": []
   },
   "pcbnew": {
     "last_paths": {