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+			)
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+				)
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+				(path "/17e4f2de-60e4-4cad-8994-c0b05920ade4"
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+				)
+			)
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+		(on_board yes)
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+		(fields_autoplaced yes)
+		(uuid "3047e25e-5572-4494-8b10-72570f3c6437")
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+				(hide yes)
+			)
+		)
+		(instances
+			(project "pcb"
+				(path "/17e4f2de-60e4-4cad-8994-c0b05920ade4"
+					(reference "S3")
+					(unit 1)
+				)
+			)
+		)
+	)
+	(symbol
+		(lib_id "PCM_marbastlib-promicroish:Seeeduino_Xiao_rp2040")
+		(at 54.61 59.69 0)
+		(unit 1)
+		(exclude_from_sim no)
+		(in_bom no)
+		(on_board yes)
+		(dnp no)
+		(uuid "34473cb8-4e16-42de-b80e-381f31ee5433")
+		(property "Reference" "U1"
+			(at 61.8333 72.39 0)
+			(effects
+				(font
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+				(justify left)
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+		(property "Value" "Seeeduino Xiao rp2040"
+			(at 42.418 74.93 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left)
+			)
+		)
+		(property "Footprint" "PCM_marbastlib-xp-promicroish:Xiao_rp2040_ACH"
+			(at 54.61 90.17 0)
+			(effects
+				(font
+					(size 1.27 1.27)
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+				(hide yes)
+			)
+		)
+		(property "Datasheet" ""
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+			(effects
+				(font
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+				(hide yes)
+			)
+		)
+		(property "Description" "Symbol for a Seeeduino Xiao rp2040"
+			(at 54.61 59.69 0)
+			(effects
+				(font
+					(size 1.27 1.27)
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+			)
+		)
+		(pin "17"
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+		)
+		(pin "19"
+			(uuid "49b7d2a9-a77a-4a5e-acfb-4b06ad3b2570")
+		)
+		(pin "7"
+			(uuid "7df0b010-7798-4d1c-b730-d487313505a1")
+		)
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+			(uuid "c97b61c6-efba-47f4-a617-e43a473b756c")
+		)
+		(pin "6"
+			(uuid "669f29c5-4b6f-408c-83f9-5cabcfcf3b48")
+		)
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+			(uuid "523e5f9f-49ee-4b72-a142-f5a8e3c3e8ff")
+		)
+		(pin "9"
+			(uuid "5941c293-6ae8-41ad-abf9-e15d1664ea80")
+		)
+		(pin "8"
+			(uuid "7c02a31c-5908-492f-82c7-39d9e4cc0439")
+		)
+		(pin "11"
+			(uuid "fabd8950-b6b5-4339-bfb9-254361b10567")
+		)
+		(pin "10"
+			(uuid "b61ac480-acaf-4d6c-84c0-c230d4a1fa94")
+		)
+		(pin "4"
+			(uuid "4797807d-e776-4d13-b572-db8a57c840a9")
+		)
+		(pin "3"
+			(uuid "b51810b1-5b0e-4428-b376-f516b3791c8a")
+		)
+		(pin "14"
+			(uuid "1a6a5314-6210-4078-ae8b-471cfab4196f")
+		)
+		(pin "13"
+			(uuid "38d481a6-79b1-4f2c-b905-43f6c125baef")
+		)
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+			(uuid "39cd1617-6cf1-448d-98c6-18b6587cd987")
+		)
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+		)
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+			(uuid "27410738-a355-4ae5-a5e9-4288ec2c9c13")
+		)
+		(pin "2"
+			(uuid "0fcc0ce9-707f-4be2-88eb-6ad3f12eb43e")
+		)
+		(pin "22"
+			(uuid "90099850-333b-4d54-b6e7-6446dd3e27ef")
+		)
+		(pin "1"
+			(uuid "02b2c3a3-3df1-4309-b07d-fa7633244cd7")
+		)
+		(instances
+			(project ""
+				(path "/17e4f2de-60e4-4cad-8994-c0b05920ade4"
+					(reference "U1")
+					(unit 1)
+				)
+			)
+		)
+	)
+	(symbol
+		(lib_id "PCM_marbastlib-choc:choc_v1_SW_solder")
+		(at 80.01 69.85 0)
+		(unit 1)
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(dnp no)
+		(fields_autoplaced yes)
+		(uuid "71e7372b-4296-46c9-83fe-0a8cf36258a2")
+		(property "Reference" "CH1"
+			(at 80.01 62.23 0)
+			(effects
+				(font
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+			)
+		)
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+			(effects
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+			)
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+				(hide yes)
+			)
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+			(at 80.01 69.85 0)
+			(effects
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+			)
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+		)
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+			(uuid "543567e0-0398-40e9-b7a4-d9b1bb29ebf0")
+		)
+		(instances
+			(project ""
+				(path "/17e4f2de-60e4-4cad-8994-c0b05920ade4"
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+					(unit 1)
+				)
+			)
+		)
+	)
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+		(on_board yes)
+		(dnp no)
+		(fields_autoplaced yes)
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+			)
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+			(at 104.14 58.2929 0)
+			(effects
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+			)
+		)
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+			(at 97.79 57.15 0)
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+				(font
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+				(hide yes)
+			)
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+			(at 97.79 57.15 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" "Kailh Choc-style stabilizer"
+			(at 97.79 57.15 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(instances
+			(project ""
+				(path "/17e4f2de-60e4-4cad-8994-c0b05920ade4"
+					(reference "S1")
+					(unit 1)
+				)
+			)
+		)
+	)
+	(sheet_instances
+		(path "/"
+			(page "1")
+		)
+	)
+	(embedded_fonts no)
+)
diff --git a/pcb/fp-info-cache b/pcb/fp-info-cache
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/pcb/fp-info-cache
@@ -0,0 +1 @@
+0
diff --git a/pcb/pcb-backups/pcb-2025-11-30_114907.zip b/pcb/pcb-backups/pcb-2025-11-30_114907.zip
new file mode 100644
index 0000000..5c35871
Binary files /dev/null and b/pcb/pcb-backups/pcb-2025-11-30_114907.zip differ
diff --git a/pcb/pcb.kicad_pcb b/pcb/pcb.kicad_pcb
new file mode 100644
index 0000000..c547853
--- /dev/null
+++ b/pcb/pcb.kicad_pcb
@@ -0,0 +1,2 @@
+(kicad_pcb (version 20241229) (generator "pcbnew") (generator_version "9.0")
+)
\ No newline at end of file
diff --git a/pcb/pcb.kicad_prl b/pcb/pcb.kicad_prl
new file mode 100644
index 0000000..3954594
--- /dev/null
+++ b/pcb/pcb.kicad_prl
@@ -0,0 +1,131 @@
+{
+  "board": {
+    "active_layer": 0,
+    "active_layer_preset": "",
+    "auto_track_width": true,
+    "hidden_netclasses": [],
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "images": 0.6,
+      "pads": 1.0,
+      "shapes": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.6
+    },
+    "selection_filter": {
+      "dimensions": true,
+      "footprints": true,
+      "graphics": true,
+      "keepouts": true,
+      "lockedItems": false,
+      "otherItems": true,
+      "pads": true,
+      "text": true,
+      "tracks": true,
+      "vias": true,
+      "zones": true
+    },
+    "visible_items": [
+      "vias",
+      "footprint_text",
+      "footprint_anchors",
+      "ratsnest",
+      "grid",
+      "footprints_front",
+      "footprints_back",
+      "footprint_values",
+      "footprint_references",
+      "tracks",
+      "drc_errors",
+      "drawing_sheet",
+      "bitmaps",
+      "pads",
+      "zones",
+      "drc_warnings",
+      "drc_exclusions",
+      "locked_item_shadows",
+      "conflict_shadows",
+      "shapes"
+    ],
+    "visible_layers": "ffffffff_ffffffff_ffffffff_ffffffff",
+    "zone_display_mode": 0
+  },
+  "git": {
+    "repo_type": "",
+    "repo_username": "",
+    "ssh_key": ""
+  },
+  "meta": {
+    "filename": "pcb.kicad_prl",
+    "version": 5
+  },
+  "net_inspector_panel": {
+    "col_hidden": [
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      false
+    ],
+    "col_order": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "col_widths": [
+      0,
+      0,
+      0,
+      0,
+      0,
+      0,
+      0,
+      0,
+      0,
+      0
+    ],
+    "custom_group_rules": [],
+    "expanded_rows": [],
+    "filter_by_net_name": true,
+    "filter_by_netclass": true,
+    "filter_text": "",
+    "group_by_constraint": false,
+    "group_by_netclass": false,
+    "show_unconnected_nets": false,
+    "show_zero_pad_nets": false,
+    "sort_ascending": true,
+    "sorting_column": 0
+  },
+  "open_jobsets": [],
+  "project": {
+    "files": []
+  },
+  "schematic": {
+    "selection_filter": {
+      "graphics": true,
+      "images": true,
+      "labels": true,
+      "lockedItems": false,
+      "otherItems": true,
+      "pins": true,
+      "symbols": true,
+      "text": true,
+      "wires": true
+    }
+  }
+}
diff --git a/pcb/pcb.kicad_pro b/pcb/pcb.kicad_pro
new file mode 100644
index 0000000..76d04f2
--- /dev/null
+++ b/pcb/pcb.kicad_pro
@@ -0,0 +1,284 @@
+{
+  "board": {
+    "3dviewports": [],
+    "design_settings": {
+      "defaults": {
+        "apply_defaults_to_fp_fields": false,
+        "apply_defaults_to_fp_shapes": false,
+        "apply_defaults_to_fp_text": false,
+        "board_outline_line_width": 0.05,
+        "copper_line_width": 0.2,
+        "copper_text_italic": false,
+        "copper_text_size_h": 1.5,
+        "copper_text_size_v": 1.5,
+        "copper_text_thickness": 0.3,
+        "copper_text_upright": false,
+        "courtyard_line_width": 0.05,
+        "dimension_precision": 4,
+        "dimension_units": 3,
+        "dimensions": {
+          "arrow_length": 1270000,
+          "extension_offset": 500000,
+          "keep_text_aligned": true,
+          "suppress_zeroes": true,
+          "text_position": 0,
+          "units_format": 0
+        },
+        "fab_line_width": 0.1,
+        "fab_text_italic": false,
+        "fab_text_size_h": 1.0,
+        "fab_text_size_v": 1.0,
+        "fab_text_thickness": 0.15,
+        "fab_text_upright": false,
+        "other_line_width": 0.1,
+        "other_text_italic": false,
+        "other_text_size_h": 1.0,
+        "other_text_size_v": 1.0,
+        "other_text_thickness": 0.15,
+        "other_text_upright": false,
+        "pads": {
+          "drill": 0.8,
+          "height": 1.27,
+          "width": 2.54
+        },
+        "silk_line_width": 0.1,
+        "silk_text_italic": false,
+        "silk_text_size_h": 1.0,
+        "silk_text_size_v": 1.0,
+        "silk_text_thickness": 0.1,
+        "silk_text_upright": false,
+        "zones": {
+          "min_clearance": 0.5
+        }
+      },
+      "diff_pair_dimensions": [],
+      "drc_exclusions": [],
+      "meta": {
+        "version": 2
+      },
+      "rule_severities": {
+        "annular_width": "error",
+        "clearance": "error",
+        "connection_width": "warning",
+        "copper_edge_clearance": "error",
+        "copper_sliver": "warning",
+        "courtyards_overlap": "error",
+        "creepage": "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_filters_mismatch": "ignore",
+        "footprint_symbol_mismatch": "warning",
+        "footprint_type_mismatch": "ignore",
+        "hole_clearance": "error",
+        "hole_to_hole": "warning",
+        "holes_co_located": "warning",
+        "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",
+        "mirrored_text_on_front_layer": "warning",
+        "missing_courtyard": "ignore",
+        "missing_footprint": "warning",
+        "net_conflict": "warning",
+        "nonmirrored_text_on_back_layer": "warning",
+        "npth_inside_courtyard": "ignore",
+        "padstack": "warning",
+        "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_on_edge_cuts": "error",
+        "text_thickness": "warning",
+        "through_hole_pad_without_hole": "error",
+        "too_many_vias": "error",
+        "track_angle": "error",
+        "track_dangling": "warning",
+        "track_segment_length": "error",
+        "track_width": "error",
+        "tracks_crossing": "error",
+        "unconnected_items": "error",
+        "unresolved_variable": "error",
+        "via_dangling": "warning",
+        "zones_intersect": "error"
+      },
+      "rules": {
+        "max_error": 0.005,
+        "min_clearance": 0.0,
+        "min_connection": 0.0,
+        "min_copper_edge_clearance": 0.5,
+        "min_groove_width": 0.0,
+        "min_hole_clearance": 0.25,
+        "min_hole_to_hole": 0.25,
+        "min_microvia_diameter": 0.2,
+        "min_microvia_drill": 0.1,
+        "min_resolved_spokes": 2,
+        "min_silk_clearance": 0.0,
+        "min_text_height": 0.8,
+        "min_text_thickness": 0.08,
+        "min_through_hole_diameter": 0.3,
+        "min_track_width": 0.0,
+        "min_via_annular_width": 0.1,
+        "min_via_diameter": 0.5,
+        "solder_mask_to_copper_clearance": 0.0,
+        "use_height_for_length_calcs": true
+      },
+      "teardrop_options": [
+        {
+          "td_onpthpad": true,
+          "td_onroundshapesonly": false,
+          "td_onsmdpad": true,
+          "td_ontrackend": false,
+          "td_onvia": true
+        }
+      ],
+      "teardrop_parameters": [
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_round_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_rect_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_track_end",
+          "td_width_to_size_filter_ratio": 0.9
+        }
+      ],
+      "track_widths": [],
+      "tuning_pattern_settings": {
+        "diff_pair_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 1.0
+        },
+        "diff_pair_skew_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 0.6
+        },
+        "single_track_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 0.6
+        }
+      },
+      "via_dimensions": [],
+      "zones_allow_external_fillets": false
+    },
+    "ipc2581": {
+      "dist": "",
+      "distpn": "",
+      "internal_id": "",
+      "mfg": "",
+      "mpn": ""
+    },
+    "layer_pairs": [],
+    "layer_presets": [],
+    "viewports": []
+  },
+  "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "pcb.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,
+        "via_diameter": 0.6,
+        "via_drill": 0.3,
+        "wire_width": 6
+      }
+    ],
+    "meta": {
+      "version": 4
+    },
+    "net_colors": null,
+    "netclass_assignments": null,
+    "netclass_patterns": []
+  },
+  "pcbnew": {
+    "last_paths": {
+      "gencad": "",
+      "idf": "",
+      "netlist": "",
+      "plot": "",
+      "pos_files": "",
+      "specctra_dsn": "",
+      "step": "",
+      "svg": "",
+      "vrml": ""
+    },
+    "page_layout_descr_file": ""
+  },
+  "schematic": {
+    "legacy_lib_dir": "",
+    "legacy_lib_list": []
+  },
+  "sheets": [],
+  "text_variables": {}
+}
diff --git a/pcb/pcb.kicad_sch b/pcb/pcb.kicad_sch
new file mode 100644
index 0000000..e518273
--- /dev/null
+++ b/pcb/pcb.kicad_sch
@@ -0,0 +1,14 @@
+(kicad_sch
+	(version 20250114)
+	(generator "eeschema")
+	(generator_version "9.0")
+	(uuid 17e4f2de-60e4-4cad-8994-c0b05920ade4)
+	(paper "A4")
+	(lib_symbols)
+	(sheet_instances
+		(path "/"
+			(page "1")
+		)
+	)
+	(embedded_fonts no)
+)
\ No newline at end of file
diff --git a/pcb/~pcb.kicad_sch.lck b/pcb/~pcb.kicad_sch.lck
new file mode 100644
index 0000000..cf7e302
--- /dev/null
+++ b/pcb/~pcb.kicad_sch.lck
@@ -0,0 +1 @@
+{"hostname":"framework16","username":"ukim"}
\ No newline at end of file