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index 0000000..90fc11a
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diff --git a/cheapsdo-backups/cheapsdo-2023-11-09_223344.zip b/cheapsdo-backups/cheapsdo-2023-11-09_223344.zip
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diff --git a/cheapsdo-rescue.kicad_sym b/cheapsdo-rescue.kicad_sym
new file mode 100644
index 0000000..0bc2526
--- /dev/null
+++ b/cheapsdo-rescue.kicad_sym
@@ -0,0 +1,322 @@
+(kicad_symbol_lib (version 20220914) (generator kicad_symbol_editor)
+  (symbol "+3.3V-power" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
+    (property "Reference" "#PWR" (at 0 -3.81 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "+3.3V-power" (at 0 3.556 0)
+      (effects (font (size 1.27 1.27)))
+    )
+    (property "Footprint" "" (at 0 0 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (at 0 0 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (symbol "+3.3V-power_0_1"
+      (polyline
+        (pts
+          (xy -0.762 1.27)
+          (xy 0 2.54)
+        )
+        (stroke (width 0) (type solid))
+        (fill (type none))
+      )
+      (polyline
+        (pts
+          (xy 0 0)
+          (xy 0 2.54)
+        )
+        (stroke (width 0) (type solid))
+        (fill (type none))
+      )
+      (polyline
+        (pts
+          (xy 0 2.54)
+          (xy 0.762 1.27)
+        )
+        (stroke (width 0) (type solid))
+        (fill (type none))
+      )
+    )
+    (symbol "+3.3V-power_1_1"
+      (pin power_in line (at 0 0 90) (length 0) hide
+        (name "+3V3" (effects (font (size 1.27 1.27))))
+        (number "1" (effects (font (size 1.27 1.27))))
+      )
+    )
+  )
+  (symbol "CP1-Device" (pin_numbers hide) (pin_names (offset 0.254) hide) (in_bom yes) (on_board yes)
+    (property "Reference" "C" (at 0.635 2.54 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "Device_CP1" (at 0.635 -2.54 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (at 0 0 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (at 0 0 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "ki_fp_filters" "CP_*" (at 0 0 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (symbol "CP1-Device_0_1"
+      (polyline
+        (pts
+          (xy -2.032 0.762)
+          (xy 2.032 0.762)
+        )
+        (stroke (width 0.508) (type solid))
+        (fill (type none))
+      )
+      (polyline
+        (pts
+          (xy -1.778 2.286)
+          (xy -0.762 2.286)
+        )
+        (stroke (width 0) (type solid))
+        (fill (type none))
+      )
+      (polyline
+        (pts
+          (xy -1.27 1.778)
+          (xy -1.27 2.794)
+        )
+        (stroke (width 0) (type solid))
+        (fill (type none))
+      )
+      (arc (start 2.032 -1.27) (mid 0 -0.5572) (end -2.032 -1.27)
+        (stroke (width 0.508) (type solid))
+        (fill (type none))
+      )
+    )
+    (symbol "CP1-Device_1_1"
+      (pin passive line (at 0 3.81 270) (length 2.794)
+        (name "~" (effects (font (size 1.27 1.27))))
+        (number "1" (effects (font (size 1.27 1.27))))
+      )
+      (pin passive line (at 0 -3.81 90) (length 3.302)
+        (name "~" (effects (font (size 1.27 1.27))))
+        (number "2" (effects (font (size 1.27 1.27))))
+      )
+    )
+  )
+  (symbol "STM32F103C8Tx-MCU_ST_STM32F1" (in_bom yes) (on_board yes)
+    (property "Reference" "U" (at -15.24 36.83 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "MCU_ST_STM32F1_STM32F103C8Tx" (at 7.62 36.83 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "Package_QFP:LQFP-48_7x7mm_P0.5mm" (at -15.24 -35.56 0)
+      (effects (font (size 1.27 1.27)) (justify right) hide)
+    )
+    (property "Datasheet" "" (at 0 0 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "ki_fp_filters" "LQFP*7x7mm*P0.5mm*" (at 0 0 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (symbol "STM32F103C8Tx-MCU_ST_STM32F1_0_1"
+      (rectangle (start -15.24 -35.56) (end 12.7 35.56)
+        (stroke (width 0.254) (type solid))
+        (fill (type background))
+      )
+    )
+    (symbol "STM32F103C8Tx-MCU_ST_STM32F1_1_1"
+      (pin power_in line (at -5.08 38.1 270) (length 2.54)
+        (name "VBAT" (effects (font (size 1.27 1.27))))
+        (number "1" (effects (font (size 1.27 1.27))))
+      )
+      (pin bidirectional line (at 15.24 5.08 180) (length 2.54)
+        (name "PA0" (effects (font (size 1.27 1.27))))
+        (number "10" (effects (font (size 1.27 1.27))))
+      )
+      (pin bidirectional line (at 15.24 2.54 180) (length 2.54)
+        (name "PA1" (effects (font (size 1.27 1.27))))
+        (number "11" (effects (font (size 1.27 1.27))))
+      )
+      (pin bidirectional line (at 15.24 0 180) (length 2.54)
+        (name "PA2" (effects (font (size 1.27 1.27))))
+        (number "12" (effects (font (size 1.27 1.27))))
+      )
+      (pin bidirectional line (at 15.24 -2.54 180) (length 2.54)
+        (name "PA3" (effects (font (size 1.27 1.27))))
+        (number "13" (effects (font (size 1.27 1.27))))
+      )
+      (pin bidirectional line (at 15.24 -5.08 180) (length 2.54)
+        (name "PA4" (effects (font (size 1.27 1.27))))
+        (number "14" (effects (font (size 1.27 1.27))))
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+      )
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+      )
+      (pin bidirectional line (at -17.78 2.54 0) (length 2.54)
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+      )
+      (pin bidirectional line (at -17.78 15.24 0) (length 2.54)
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+      )
+      (pin bidirectional line (at -17.78 0 0) (length 2.54)
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+      (pin bidirectional line (at -17.78 -20.32 0) (length 2.54)
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+      )
+      (pin bidirectional line (at -17.78 -22.86 0) (length 2.54)
+        (name "PB11" (effects (font (size 1.27 1.27))))
+        (number "22" (effects (font (size 1.27 1.27))))
+      )
+      (pin power_in line (at -5.08 -38.1 90) (length 2.54)
+        (name "VSS" (effects (font (size 1.27 1.27))))
+        (number "23" (effects (font (size 1.27 1.27))))
+      )
+      (pin power_in line (at -2.54 38.1 270) (length 2.54)
+        (name "VDD" (effects (font (size 1.27 1.27))))
+        (number "24" (effects (font (size 1.27 1.27))))
+      )
+      (pin bidirectional line (at -17.78 -25.4 0) (length 2.54)
+        (name "PB12" (effects (font (size 1.27 1.27))))
+        (number "25" (effects (font (size 1.27 1.27))))
+      )
+      (pin bidirectional line (at -17.78 -27.94 0) (length 2.54)
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+      )
+      (pin bidirectional line (at -17.78 -30.48 0) (length 2.54)
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+      )
+      (pin bidirectional line (at -17.78 -33.02 0) (length 2.54)
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+      )
+      (pin bidirectional line (at 15.24 -15.24 180) (length 2.54)
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+      )
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+      )
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+      )
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+      )
+      (pin input line (at -17.78 27.94 0) (length 2.54)
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+        (number "44" (effects (font (size 1.27 1.27))))
+      )
+      (pin bidirectional line (at -17.78 -15.24 0) (length 2.54)
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+        (name "PB9" (effects (font (size 1.27 1.27))))
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+      )
+      (pin power_in line (at 0 -38.1 90) (length 2.54)
+        (name "VSS" (effects (font (size 1.27 1.27))))
+        (number "47" (effects (font (size 1.27 1.27))))
+      )
+      (pin power_in line (at 2.54 38.1 270) (length 2.54)
+        (name "VDD" (effects (font (size 1.27 1.27))))
+        (number "48" (effects (font (size 1.27 1.27))))
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+      (pin input line (at -17.78 22.86 0) (length 2.54)
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+      (pin input line (at -17.78 20.32 0) (length 2.54)
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+        (number "6" (effects (font (size 1.27 1.27))))
+      )
+      (pin input line (at -17.78 33.02 0) (length 2.54)
+        (name "NRST" (effects (font (size 1.27 1.27))))
+        (number "7" (effects (font (size 1.27 1.27))))
+      )
+      (pin power_in line (at 2.54 -38.1 90) (length 2.54)
+        (name "VSSA" (effects (font (size 1.27 1.27))))
+        (number "8" (effects (font (size 1.27 1.27))))
+      )
+      (pin power_in line (at 5.08 38.1 270) (length 2.54)
+        (name "VDDA" (effects (font (size 1.27 1.27))))
+        (number "9" (effects (font (size 1.27 1.27))))
+      )
+    )
+  )
+)
diff --git a/cheapsdo.kicad_pro b/cheapsdo.kicad_pro
new file mode 100644
index 0000000..3b54594
--- /dev/null
+++ b/cheapsdo.kicad_pro
@@ -0,0 +1,339 @@
+{
+  "board": {
+    "3dviewports": [],
+    "design_settings": {
+      "defaults": {
+        "board_outline_line_width": 0.1,
+        "copper_line_width": 0.2,
+        "copper_text_size_h": 1.5,
+        "copper_text_size_v": 1.5,
+        "copper_text_thickness": 0.3,
+        "other_line_width": 0.15,
+        "silk_line_width": 0.15,
+        "silk_text_size_h": 1.0,
+        "silk_text_size_v": 1.0,
+        "silk_text_thickness": 0.15
+      },
+      "diff_pair_dimensions": [],
+      "drc_exclusions": [],
+      "rules": {
+        "solder_mask_clearance": 0.0,
+        "solder_mask_min_width": 0.0
+      },
+      "track_widths": [],
+      "via_dimensions": []
+    },
+    "layer_presets": [],
+    "viewports": []
+  },
+  "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "erc": {
+    "erc_exclusions": [],
+    "meta": {
+      "version": 0
+    },
+    "pin_map": [
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
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+        0,
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+        1,
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+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
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+        0,
+        0,
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+        1,
+        0,
+        1,
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+      ],
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+        1,
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+      [
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+        2,
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+      ]
+    ],
+    "rule_severities": {
+      "bus_definition_conflict": "error",
+      "bus_entry_needed": "error",
+      "bus_to_bus_conflict": "error",
+      "bus_to_net_conflict": "error",
+      "conflicting_netclasses": "error",
+      "different_unit_footprint": "error",
+      "different_unit_net": "error",
+      "duplicate_reference": "error",
+      "duplicate_sheet_names": "error",
+      "endpoint_off_grid": "warning",
+      "extra_units": "error",
+      "global_label_dangling": "warning",
+      "hier_label_mismatch": "error",
+      "label_dangling": "error",
+      "lib_symbol_issues": "warning",
+      "missing_bidi_pin": "warning",
+      "missing_input_pin": "warning",
+      "missing_power_pin": "error",
+      "missing_unit": "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",
+      "simulation_model_issue": "ignore",
+      "unannotated": "error",
+      "unit_value_mismatch": "error",
+      "unresolved_variable": "error",
+      "wire_dangling": "error"
+    }
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
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diff --git a/cheapsdo.kicad_sch b/cheapsdo.kicad_sch
new file mode 100644
index 0000000..fba2b29
--- /dev/null
+++ b/cheapsdo.kicad_sch
@@ -0,0 +1,2290 @@
+(kicad_sch (version 20230121) (generator eeschema)
+
+  (uuid a56a7118-0897-4b3a-9dd0-7db40f011ec3)
+
+  (paper "A4")
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diff --git a/gps.kicad_sch b/gps.kicad_sch
new file mode 100644
index 0000000..4bbc960
--- /dev/null
+++ b/gps.kicad_sch
@@ -0,0 +1,1117 @@
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diff --git a/sym-lib-table b/sym-lib-table
index b96beb6..474a991 100644
--- a/sym-lib-table
+++ b/sym-lib-table
@@ -1,4 +1,7 @@
 (sym_lib_table
-  (lib (name c4550)(type Legacy)(uri ${KIPRJMOD}/c4550.lib)(options "")(descr ""))
-  (lib (name reflow-controller-rescue)(type Legacy)(uri /home/sebastian/projects/reflow-controller-pcb/reflow-controller-rescue.lib)(options "")(descr ""))
+  (version 7)
+  (lib (name "c4550")(type "Legacy")(uri "${KIPRJMOD}/c4550.lib")(options "")(descr ""))
+  (lib (name "reflow-controller-rescue")(type "Legacy")(uri "/home/sebastian/projects/reflow-controller-pcb/reflow-controller-rescue.lib")(options "")(descr ""))
+  (lib (name "cheapsdo-rescue")(type "KiCad")(uri "${KIPRJMOD}/cheapsdo-rescue.kicad_sym")(options "")(descr ""))
+  (lib (name "ublox-lea-6h")(type "KiCad")(uri "/home/sebastian/projects/ublox-lea-6h-breakout/ublox-lea-6h.kicad_sym")(options "")(descr ""))
 )
diff --git a/tcxo.kicad_sch b/tcxo.kicad_sch
new file mode 100644
index 0000000..e8691d5
--- /dev/null
+++ b/tcxo.kicad_sch
@@ -0,0 +1,2577 @@
+(kicad_sch (version 20230121) (generator eeschema)
+
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+
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