diff --git a/pcb/4swToAdc.kicad_prl b/pcb/4swToAdc.kicad_prl
new file mode 100644
index 0000000..1c45f60
--- /dev/null
+++ b/pcb/4swToAdc.kicad_prl
@@ -0,0 +1,75 @@
+{
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+    "active_layer_preset": "",
+    "auto_track_width": true,
+    "hidden_nets": [],
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+    "net_color_mode": 1,
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+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.6
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+    "ratsnest_display_mode": 0,
+    "selection_filter": {
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+      "footprints": true,
+      "graphics": true,
+      "keepouts": true,
+      "lockedItems": true,
+      "otherItems": true,
+      "pads": true,
+      "text": true,
+      "tracks": true,
+      "vias": true,
+      "zones": true
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+    "visible_layers": "fffffff_ffffffff",
+    "zone_display_mode": 0
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+  "meta": {
+    "filename": "4-switches-to-adc.kicad_prl",
+    "version": 3
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+  "project": {
+    "files": []
+  }
+}
diff --git a/pcb/4swToAdc.kicad_pro b/pcb/4swToAdc.kicad_pro
new file mode 100644
index 0000000..707fa1c
--- /dev/null
+++ b/pcb/4swToAdc.kicad_pro
@@ -0,0 +1,294 @@
+{
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+  },
+  "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
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+    "meta": {
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+    },
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+      "bus_entry_needed": "error",
+      "bus_label_syntax": "error",
+      "bus_to_bus_conflict": "error",
+      "bus_to_net_conflict": "error",
+      "different_unit_footprint": "error",
+      "different_unit_net": "error",
+      "duplicate_reference": "error",
+      "duplicate_sheet_names": "error",
+      "extra_units": "error",
+      "global_label_dangling": "warning",
+      "hier_label_mismatch": "error",
+      "label_dangling": "error",
+      "lib_symbol_issues": "warning",
+      "multiple_net_names": "warning",
+      "net_not_bus_member": "warning",
+      "no_connect_connected": "warning",
+      "no_connect_dangling": "warning",
+      "pin_not_connected": "error",
+      "pin_not_driven": "error",
+      "pin_to_pin": "warning",
+      "power_pin_not_driven": "error",
+      "similar_labels": "warning",
+      "unannotated": "error",
+      "unit_value_mismatch": "error",
+      "unresolved_variable": "error",
+      "wire_dangling": "error"
+    }
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "4-switches-to-adc.kicad_pro",
+    "version": 1
+  },
+  "net_settings": {
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+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
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+        "via_diameter": 0.8,
+        "via_drill": 0.4,
+        "wire_width": 6.0
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+    "meta": {
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+    "net_colors": null
+  },
+  "pcbnew": {
+    "last_paths": {
+      "gencad": "",
+      "idf": "",
+      "netlist": "",
+      "specctra_dsn": "",
+      "step": "",
+      "vrml": ""
+    },
+    "page_layout_descr_file": ""
+  },
+  "schematic": {
+    "annotate_start_num": 0,
+    "drawing": {
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+      "default_text_size": 50.0,
+      "field_names": [],
+      "intersheets_ref_own_page": false,
+      "intersheets_ref_prefix": "",
+      "intersheets_ref_short": false,
+      "intersheets_ref_show": false,
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+      "junction_size_choice": 3,
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+      "pin_symbol_size": 25.0,
+      "text_offset_ratio": 0.15
+    },
+    "legacy_lib_dir": "",
+    "legacy_lib_list": [],
+    "meta": {
+      "version": 1
+    },
+    "net_format_name": "",
+    "page_layout_descr_file": "",
+    "plot_directory": "",
+    "spice_adjust_passive_values": false,
+    "spice_external_command": "spice \"%I\"",
+    "subpart_first_id": 65,
+    "subpart_id_separator": 0
+  },
+  "sheets": [
+    [
+      "0534e379-8bf0-4abf-a148-fc91b6440529",
+      ""
+    ]
+  ],
+  "text_variables": {}
+}
diff --git a/pcb/4swToAdc.kicad_sch b/pcb/4swToAdc.kicad_sch
new file mode 100644
index 0000000..1b47027
--- /dev/null
+++ b/pcb/4swToAdc.kicad_sch
@@ -0,0 +1,580 @@
+(kicad_sch (version 20211123) (generator eeschema)
+
+  (uuid 0534e379-8bf0-4abf-a148-fc91b6440529)
+
+  (paper "A4")
+
+  (lib_symbols
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diff --git a/pcb/4swToAdc_stripboard-calc.ods b/pcb/4swToAdc_stripboard-calc.ods
new file mode 100644
index 0000000..0a78b9d
Binary files /dev/null and b/pcb/4swToAdc_stripboard-calc.ods differ