1  {
  2    "board": {
  3      "3dviewports": [],
  4      "design_settings": {
  5        "defaults": {
  6          "board_outline_line_width": 0.09999999999999999,
  7          "copper_line_width": 0.19999999999999998,
  8          "copper_text_italic": false,
  9          "copper_text_size_h": 1.5,
 10          "copper_text_size_v": 1.5,
 11          "copper_text_thickness": 0.3,
 12          "copper_text_upright": false,
 13          "courtyard_line_width": 0.049999999999999996,
 14          "dimension_precision": 4,
 15          "dimension_units": 3,
 16          "dimensions": {
 17            "arrow_length": 1270000,
 18            "extension_offset": 500000,
 19            "keep_text_aligned": true,
 20            "suppress_zeroes": false,
 21            "text_position": 0,
 22            "units_format": 1
 23          },
 24          "fab_line_width": 0.09999999999999999,
 25          "fab_text_italic": false,
 26          "fab_text_size_h": 1.0,
 27          "fab_text_size_v": 1.0,
 28          "fab_text_thickness": 0.15,
 29          "fab_text_upright": false,
 30          "other_line_width": 0.15,
 31          "other_text_italic": false,
 32          "other_text_size_h": 1.0,
 33          "other_text_size_v": 1.0,
 34          "other_text_thickness": 0.15,
 35          "other_text_upright": false,
 36          "pads": {
 37            "drill": 2.2,
 38            "height": 4.4,
 39            "width": 4.4
 40          },
 41          "silk_line_width": 0.15,
 42          "silk_text_italic": false,
 43          "silk_text_size_h": 1.0,
 44          "silk_text_size_v": 1.0,
 45          "silk_text_thickness": 0.15,
 46          "silk_text_upright": false,
 47          "zones": {
 48            "min_clearance": 0.15
 49          }
 50        },
 51        "diff_pair_dimensions": [
 52          {
 53            "gap": 0.0,
 54            "via_gap": 0.0,
 55            "width": 0.0
 56          }
 57        ],
 58        "drc_exclusions": [],
 59        "meta": {
 60          "version": 2
 61        },
 62        "rule_severities": {
 63          "annular_width": "error",
 64          "clearance": "error",
 65          "connection_width": "warning",
 66          "copper_edge_clearance": "error",
 67          "copper_sliver": "warning",
 68          "courtyards_overlap": "error",
 69          "diff_pair_gap_out_of_range": "error",
 70          "diff_pair_uncoupled_length_too_long": "error",
 71          "drill_out_of_range": "error",
 72          "duplicate_footprints": "warning",
 73          "extra_footprint": "warning",
 74          "footprint": "error",
 75          "footprint_type_mismatch": "ignore",
 76          "hole_clearance": "error",
 77          "hole_near_hole": "error",
 78          "invalid_outline": "error",
 79          "isolated_copper": "warning",
 80          "item_on_disabled_layer": "error",
 81          "items_not_allowed": "error",
 82          "length_out_of_range": "error",
 83          "lib_footprint_issues": "warning",
 84          "lib_footprint_mismatch": "warning",
 85          "malformed_courtyard": "error",
 86          "microvia_drill_out_of_range": "error",
 87          "missing_courtyard": "ignore",
 88          "missing_footprint": "warning",
 89          "net_conflict": "warning",
 90          "npth_inside_courtyard": "ignore",
 91          "padstack": "warning",
 92          "pth_inside_courtyard": "ignore",
 93          "shorting_items": "error",
 94          "silk_edge_clearance": "warning",
 95          "silk_over_copper": "warning",
 96          "silk_overlap": "warning",
 97          "skew_out_of_range": "error",
 98          "solder_mask_bridge": "error",
 99          "starved_thermal": "error",
100          "text_height": "warning",
101          "text_thickness": "warning",
102          "through_hole_pad_without_hole": "error",
103          "too_many_vias": "error",
104          "track_dangling": "warning",
105          "track_width": "error",
106          "tracks_crossing": "error",
107          "unconnected_items": "error",
108          "unresolved_variable": "error",
109          "via_dangling": "warning",
110          "zones_intersect": "error"
111        },
112        "rules": {
113          "max_error": 0.005,
114          "min_clearance": 0.0,
115          "min_connection": 0.0,
116          "min_copper_edge_clearance": 0.19999999999999998,
117          "min_hole_clearance": 0.15,
118          "min_hole_to_hole": 0.25,
119          "min_microvia_diameter": 0.19999999999999998,
120          "min_microvia_drill": 0.09999999999999999,
121          "min_resolved_spokes": 2,
122          "min_silk_clearance": 0.0,
123          "min_text_height": 0.7999999999999999,
124          "min_text_thickness": 0.08,
125          "min_through_hole_diameter": 0.3,
126          "min_track_width": 0.0,
127          "min_via_annular_width": 0.09999999999999999,
128          "min_via_diameter": 0.5,
129          "solder_mask_clearance": 0.0,
130          "solder_mask_min_width": 0.0,
131          "solder_mask_to_copper_clearance": 0.0,
132          "use_height_for_length_calcs": true
133        },
134        "teardrop_options": [
135          {
136            "td_allow_use_two_tracks": true,
137            "td_curve_segcount": 5,
138            "td_on_pad_in_zone": false,
139            "td_onpadsmd": true,
140            "td_onroundshapesonly": false,
141            "td_ontrackend": false,
142            "td_onviapad": true
143          }
144        ],
145        "teardrop_parameters": [
146          {
147            "td_curve_segcount": 0,
148            "td_height_ratio": 1.0,
149            "td_length_ratio": 0.5,
150            "td_maxheight": 2.0,
151            "td_maxlen": 1.0,
152            "td_target_name": "td_round_shape",
153            "td_width_to_size_filter_ratio": 0.9
154          },
155          {
156            "td_curve_segcount": 0,
157            "td_height_ratio": 1.0,
158            "td_length_ratio": 0.5,
159            "td_maxheight": 2.0,
160            "td_maxlen": 1.0,
161            "td_target_name": "td_rect_shape",
162            "td_width_to_size_filter_ratio": 0.9
163          },
164          {
165            "td_curve_segcount": 0,
166            "td_height_ratio": 1.0,
167            "td_length_ratio": 0.5,
168            "td_maxheight": 2.0,
169            "td_maxlen": 1.0,
170            "td_target_name": "td_track_end",
171            "td_width_to_size_filter_ratio": 0.9
172          }
173        ],
174        "track_widths": [
175          0.0,
176          0.15,
177          0.2,
178          0.3,
179          0.5,
180          1.0
181        ],
182        "via_dimensions": [
183          {
184            "diameter": 0.0,
185            "drill": 0.0
186          },
187          {
188            "diameter": 0.5,
189            "drill": 0.3
190          },
191          {
192            "diameter": 0.6,
193            "drill": 0.4
194          },
195          {
196            "diameter": 1.0,
197            "drill": 0.6
198          }
199        ],
200        "zones_allow_external_fillets": false
201      },
202      "layer_presets": [],
203      "viewports": []
204    },
205    "boards": [],
206    "cvpcb": {
207      "equivalence_files": []
208    },
209    "erc": {
210      "erc_exclusions": [],
211      "meta": {
212        "version": 0
213      },
214      "pin_map": [
215        [
216          0,
217          0,
218          0,
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383      ],
384      "rule_severities": {
385        "bus_definition_conflict": "error",
386        "bus_entry_needed": "error",
387        "bus_to_bus_conflict": "error",
388        "bus_to_net_conflict": "error",
389        "conflicting_netclasses": "error",
390        "different_unit_footprint": "error",
391        "different_unit_net": "error",
392        "duplicate_reference": "error",
393        "duplicate_sheet_names": "error",
394        "endpoint_off_grid": "warning",
395        "extra_units": "error",
396        "global_label_dangling": "warning",
397        "hier_label_mismatch": "error",
398        "label_dangling": "error",
399        "lib_symbol_issues": "warning",
400        "missing_bidi_pin": "warning",
401        "missing_input_pin": "warning",
402        "missing_power_pin": "error",
403        "missing_unit": "warning",
404        "multiple_net_names": "warning",
405        "net_not_bus_member": "warning",
406        "no_connect_connected": "warning",
407        "no_connect_dangling": "warning",
408        "pin_not_connected": "error",
409        "pin_not_driven": "error",
410        "pin_to_pin": "warning",
411        "power_pin_not_driven": "error",
412        "similar_labels": "warning",
413        "simulation_model_issue": "error",
414        "unannotated": "error",
415        "unit_value_mismatch": "error",
416        "unresolved_variable": "error",
417        "wire_dangling": "error"
418      }
419    },
420    "libraries": {
421      "pinned_footprint_libs": [],
422      "pinned_symbol_libs": []
423    },
424    "meta": {
425      "filename": "io_expander.kicad_pro",
426      "version": 1
427    },
428    "net_settings": {
429      "classes": [
430        {
431          "bus_width": 12,
432          "clearance": 0.15,
433          "diff_pair_gap": 0.15,
434          "diff_pair_via_gap": 0.25,
435          "diff_pair_width": 0.15,
436          "line_style": 0,
437          "microvia_diameter": 0.3,
438          "microvia_drill": 0.1,
439          "name": "Default",
440          "pcb_color": "rgba(0, 0, 0, 0.000)",
441          "schematic_color": "rgba(0, 0, 0, 0.000)",
442          "track_width": 0.15,
443          "via_diameter": 0.8,
444          "via_drill": 0.4,
445          "wire_width": 6
446        }
447      ],
448      "meta": {
449        "version": 3
450      },
451      "net_colors": null,
452      "netclass_assignments": null,
453      "netclass_patterns": []
454    },
455    "pcbnew": {
456      "last_paths": {
457        "gencad": "",
458        "idf": "",
459        "netlist": "",
460        "specctra_dsn": "",
461        "step": "",
462        "vrml": ""
463      },
464      "page_layout_descr_file": ""
465    },
466    "schematic": {
467      "annotate_start_num": 0,
468      "drawing": {
469        "dashed_lines_dash_length_ratio": 12.0,
470        "dashed_lines_gap_length_ratio": 3.0,
471        "default_line_thickness": 6.0,
472        "default_text_size": 50.0,
473        "field_names": [],
474        "intersheets_ref_own_page": false,
475        "intersheets_ref_prefix": "",
476        "intersheets_ref_short": false,
477        "intersheets_ref_show": false,
478        "intersheets_ref_suffix": "",
479        "junction_size_choice": 3,
480        "label_size_ratio": 0.375,
481        "pin_symbol_size": 25.0,
482        "text_offset_ratio": 0.15
483      },
484      "legacy_lib_dir": "",
485      "legacy_lib_list": [],
486      "meta": {
487        "version": 1
488      },
489      "net_format_name": "",
490      "page_layout_descr_file": "",
491      "plot_directory": "",
492      "spice_current_sheet_as_root": false,
493      "spice_external_command": "spice \"%I\"",
494      "spice_model_current_sheet_as_root": true,
495      "spice_save_all_currents": false,
496      "spice_save_all_voltages": false,
497      "subpart_first_id": 65,
498      "subpart_id_separator": 0
499    },
500    "sheets": [
501      [
502        "282650e5-ca91-4c4c-8628-a50fd4c45940",
503        ""
504      ]
505    ],
506    "text_variables": {}
507  }