{
 "commit": {
  "sha": "be0c7dd40a4176b2e8565e59ed56737e28ad5f6e",
  "date": "2026-03-07T19:14:44+00:00",
  "subject": "chore(hw): add 2 addtl caps on buck VIN, rotate 9V pin header",
  "url": "https://github.com/DLehenbauer/econopet/commit/be0c7dd40a4176b2e8565e59ed56737e28ad5f6e",
  "board": "hw/rev-b/mainboard/kicad/Mainboard.kicad_pcb"
 },
 "project": {
  "title": "EconoPET mainboard (rev. B)",
  "repo": "https://github.com/DLehenbauer/econopet",
  "licence": "CC0-1.0"
 },
 "impactDiff": {
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    "source": {
     "repo": "https://github.com/DLehenbauer/econopet",
     "sha": "b31730feb64003b99f8e147cef4227368490c749",
     "path": "hw/rev-b/mainboard/kicad/Mainboard.kicad_pcb"
    }
   },
   "after": {
    "format": "kicad_pcb",
    "source": {
     "repo": "https://github.com/DLehenbauer/econopet",
     "sha": "be0c7dd40a4176b2e8565e59ed56737e28ad5f6e",
     "path": "hw/rev-b/mainboard/kicad/Mainboard.kicad_pcb"
    }
   },
   "optionsSha256": null,
   "engine": null
  },
  "layoutDiff": {
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   "identical": false,
   "tolerances": {
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    "rotTol": 0.01,
    "widthTol": 0.0001,
    "drillTol": 0.0001,
    "lengthTol": 0.0001,
    "areaTol": 0.000001,
    "thickTol": 0.000001,
    "routeTol": 0.01,
    "sampleStep": 0.1,
    "minPadOverlap": 0.6
   },
   "summary": {
    "components": {
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     "removed": 0,
     "renamed": 0,
     "moved": 6,
     "rotated": 5,
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     "valueChanged": 1
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    "nets": {
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     "changed": 2,
     "rerouted": 2
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    "outlineChanged": false,
    "stackupChanged": false
   },
   "components": {
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    "counts": {
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      "refdes": "C110",
      "footprint": "EconoPET:CP_Radial_D16.0mm_P5.00mm_P7.50mm",
      "value": "330uF",
      "at": [
       113.580001,
       127.42
      ],
      "rot": 0,
      "side": "front",
      "pads": 2
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     {
      "refdes": "C16",
      "footprint": "Capacitor_SMD:C_0603_1608Metric",
      "value": "10u",
      "at": [
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       125.55
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      "rot": 0,
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      "pads": 2
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      "from": [
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       127.42
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       94.989999,
       167.48
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      "to": [
       94.989999,
       170.02
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      "distance": 2.54
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    ],
    "rotated": [
     {
      "refdes": "C12",
      "delta": -90,
      "from": 0,
      "to": 270,
      "basis": "footprint"
     },
     {
      "refdes": "C15",
      "delta": -90,
      "from": 0,
      "to": 270,
      "basis": "footprint"
     },
     {
      "refdes": "C17",
      "delta": -90,
      "from": 0,
      "to": 270,
      "basis": "footprint"
     },
     {
      "refdes": "C7",
      "delta": -90,
      "from": 0,
      "to": 270,
      "basis": "footprint"
     },
     {
      "refdes": "J11",
      "delta": 180,
      "from": 0,
      "to": 180,
      "basis": "footprint"
     }
    ],
    "flipped": [],
    "footprintChanged": [
     {
      "refdes": "C7",
      "from": "EconoPET:CP_Radial_D16.0mm_P5.00mm_P7.50mm",
      "to": "Capacitor_SMD:C_0805_2012Metric",
      "pads": {
       "added": [],
       "removed": [],
       "changed": [
        {
         "pin": "1",
         "what": [
          "shape",
          "position"
         ]
        },
        {
         "pin": "2",
         "what": [
          "shape",
          "position"
         ]
        }
       ]
      }
     }
    ],
    "valueChanged": [
     {
      "refdes": "C7",
      "from": "11000u",
      "to": "22u"
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    ]
   },
   "nets": {
    "added": [],
    "removed": [],
    "renamed": [],
    "changed": [
     {
      "name": "+9V_Unreg",
      "length": {
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       "b": 158.75348451,
       "delta": 0.807015586,
       "perLayer": {
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         "a": 42.425175543,
         "b": 37.478393873,
         "delta": -4.94678167
        },
        "B.Cu": {
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         "b": 121.275090637,
         "delta": 5.753797257
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       }
      },
      "width": {
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        "b": 0.4
       },
       "max": {
        "a": 1.6,
        "b": 1.6
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      "copperArea": {
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       "b": 20.98861535,
       "delta": 2.138662544,
       "perLayer": {
        "F.Cu": {
         "a": 18.849952806,
         "b": 20.98861535,
         "delta": 2.138662544
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       "note": "pour (region) area only"
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       "added": [
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      "width": {
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        "b": 1.6
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         "delta": -10.589032345
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   },
   "stackup": {
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    "added": [],
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    "modified": [],
    "reordered": false,
    "thickness": null
   },
   "warnings": []
  },
  "bomDiff": {
   "summary": {
    "added": 1,
    "removed": 0,
    "qtyChanged": 1,
    "valueChanged": 1,
    "footprintChanged": 1,
    "mpnChanged": 0,
    "dnpToggled": 1,
    "categoryChanged": 0,
    "total": 5,
    "unchanged": 293
   },
   "added": [
    {
     "kind": "added",
     "category": "SCH",
     "key": "vf:330uf|cp_radial_d16.0mm_p5.00mm_p7.50mm",
     "part": {
      "value": "330uF",
      "footprint": "EconoPET:CP_Radial_D16.0mm_P5.00mm_P7.50mm"
     },
     "qtyTo": 1,
     "refs": [
      "C110"
     ]
    }
   ],
   "removed": [],
   "qtyChanged": [
    {
     "kind": "qty-changed",
     "category": "SCH",
     "key": "vf:10u|c_0603_1608metric",
     "part": {
      "value": "10u",
      "footprint": "Capacitor_SMD:C_0603_1608Metric"
     },
     "qtyFrom": 2,
     "qtyTo": 3,
     "refsAdded": [
      "C16"
     ],
     "refsRemoved": [],
     "refs": [
      "C16",
      "C18",
      "C26"
     ]
    }
   ],
   "valueChanged": [
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:22u|c_0805_2012metric",
     "part": {
      "value": "22u",
      "footprint": "Capacitor_SMD:C_0805_2012Metric"
     },
     "from": "330uF",
     "to": "22u",
     "refs": [
      "C7"
     ]
    }
   ],
   "footprintChanged": [
    {
     "kind": "footprint-changed",
     "category": "SCH",
     "key": "vf:22u|c_0805_2012metric",
     "part": {
      "value": "22u",
      "footprint": "Capacitor_SMD:C_0805_2012Metric"
     },
     "from": "EconoPET:CP_Radial_D16.0mm_P5.00mm_P7.50mm",
     "to": "Capacitor_SMD:C_0805_2012Metric",
     "refs": [
      "C7"
     ]
    }
   ],
   "mpnChanged": [],
   "dnpToggled": [
    {
     "kind": "dnp-toggled",
     "category": "SCH",
     "key": "vf:22u|c_0805_2012metric",
     "part": {
      "value": "22u",
      "footprint": "Capacitor_SMD:C_0805_2012Metric"
     },
     "from": "dnp",
     "to": "fitted",
     "refs": [
      "C7"
     ]
    }
   ],
   "categoryChanged": [],
   "byCategory": {
    "SCH": {
     "added": 1,
     "qtyChanged": 1,
     "valueChanged": 1,
     "footprintChanged": 1,
     "dnpToggled": 1
    },
    "PCB": {},
    "BOARD_FEATURE": {}
   }
  },
  "impacts": [
   {
    "id": "035093e6d18121d4",
    "kind": "bom",
    "ref": "C110",
    "category": "SCH",
    "metric": "qty",
    "before": 0,
    "after": 1,
    "delta": 1,
    "severity": "info",
    "why": "SCH line 330uF CP_Radial_D16.0mm_P5.00mm_P7.50mm: C110 added (qty 0 -> 1).",
    "causes": [
     "bomDiff.added[C110]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "951999fd89b2cd47",
    "kind": "bom",
    "ref": "C16",
    "category": "SCH",
    "metric": "qty",
    "before": 2,
    "after": 3,
    "delta": 1,
    "severity": "info",
    "why": "SCH line 10u C_0603_1608Metric: C16 qty changed (qty 2 -> 3).",
    "causes": [
     "bomDiff.qtyChanged[C16]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "37cf54e1d662e540",
    "kind": "bom",
    "ref": "C7",
    "category": "SCH",
    "metric": "dnp",
    "before": "dnp",
    "after": "fitted",
    "delta": null,
    "severity": "info",
    "why": "SCH line 22u C_0805_2012Metric: C7 dnp toggled (dnp -> fitted).",
    "causes": [
     "bomDiff.dnpToggled[C7]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "7441609601baa044",
    "kind": "bom",
    "ref": "C7",
    "category": "SCH",
    "metric": "footprint",
    "before": "EconoPET:CP_Radial_D16.0mm_P5.00mm_P7.50mm",
    "after": "Capacitor_SMD:C_0805_2012Metric",
    "delta": null,
    "severity": "info",
    "why": "SCH line 22u C_0805_2012Metric: C7 footprint changed (EconoPET:CP_Radial_D16.0mm_P5.00mm_P7.50mm -> Capacitor_SMD:C_0805_2012Metric).",
    "causes": [
     "bomDiff.footprintChanged[C7]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "0e5c11c8fc62ab0a",
    "kind": "bom",
    "ref": "C7",
    "category": "SCH",
    "metric": "value",
    "before": "330uF",
    "after": "22u",
    "delta": null,
    "severity": "info",
    "why": "SCH line 22u C_0805_2012Metric: C7 value changed (330uF -> 22u).",
    "causes": [
     "bomDiff.valueChanged[C7]"
    ],
    "assumptionDependent": false
   }
  ],
  "summary": {
   "counts": {
    "high": 0,
    "medium": 0,
    "low": 0,
    "info": 5
   },
   "headline": "5 informational change(s), none against a limit; first: SCH line 330uF CP_Radial_D16.0mm_P5.00mm_P7.50mm: C110 added (qty 0 -> 1).",
   "markdown": "**5 informational change(s), none against a limit; first: SCH line 330uF CP_Radial_D16.0mm_P5.00mm_P7.50mm: C110 added (qty 0 -> 1).** Layout: components: 2 added, 6 moved, 5 rotated, 1 with a new footprint, 1 with a new value; nets: 2 rerouted. BOM: 1 line(s) added, 1 changed quantity, 1 changed value, 1 changed footprint, 1 toggled DNP. Re-analysed on both revisions, for the changed nets and parts only: impedance, cert. Not run for missing inputs: cert.creepage, returnPath (see refused)."
  },
  "analysed": {
   "ran": [
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    "cert"
   ],
   "nets": [
    "+9V_Unreg",
    "GND"
   ],
   "rails": []
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  "assumptions": {
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     "source": "default",
     "analysis": "impedance",
     "key": "mask.er",
     "value": 3.8,
     "citation": "LPI solder mask epsilon_r 3.8 (NativeCAD default)",
     "verified": false,
     "affects": [
      "outer-layer traces"
     ]
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "fab",
     "value": "jlcpcb",
     "citation": "fab profile jlcpcb (NativeCAD default)",
     "verified": true,
     "affects": []
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "ipc6012.drillPositionTolMm",
     "value": 0.075,
     "unit": "mm",
     "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)",
     "verified": false,
     "affects": [
      "ipc6012"
     ]
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "ipc6012.innerRegistrationTolMm",
     "value": 0.075,
     "unit": "mm",
     "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)",
     "verified": false,
     "affects": [
      "ipc6012"
     ]
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "ipc6012.outerRegistrationTolMm",
     "value": 0.05,
     "unit": "mm",
     "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)",
     "verified": false,
     "affects": [
      "ipc6012"
     ]
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "ipcClass",
     "value": "2",
     "citation": "IPC-6012 Class 2 (dedicated service) - the general commercial default",
     "verified": true,
     "affects": []
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "motC",
     "value": 105,
     "citation": "requested MOT 105 C (FR-4 laminates' common UL RTI)",
     "verified": false,
     "affects": [],
     "unit": "C"
    },
    {
     "source": "default",
     "analysis": "returnPath",
     "key": "erEff",
     "value": 4,
     "citation": "effective epsilon_r 4 for the stitching distance (NativeCAD default)",
     "verified": false,
     "affects": []
    },
    {
     "source": "derived",
     "analysis": "returnPath",
     "key": "planes",
     "value": [],
     "citation": "inner layer with >= 30 % pour cover of one net (outer: >= 80 % and no other net's traces); voids = holes >= 2 mm^2 in that net's pours, as bounding rectangles",
     "affects": [
      "every finding"
     ]
    },
    {
     "source": "default",
     "analysis": "returnPath",
     "key": "riseTimeNs",
     "value": 1,
     "citation": "edge rise time 1 ns, f_knee = 0.35 / t_r (Johnson & Graham)",
     "verified": true,
     "affects": [],
     "unit": "ns"
    }
   ],
   "after": [
    {
     "source": "default",
     "analysis": "impedance",
     "key": "mask.er",
     "value": 3.8,
     "citation": "LPI solder mask epsilon_r 3.8 (NativeCAD default)",
     "verified": false,
     "affects": [
      "outer-layer traces"
     ]
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "fab",
     "value": "jlcpcb",
     "citation": "fab profile jlcpcb (NativeCAD default)",
     "verified": true,
     "affects": []
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "ipc6012.drillPositionTolMm",
     "value": 0.075,
     "unit": "mm",
     "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)",
     "verified": false,
     "affects": [
      "ipc6012"
     ]
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "ipc6012.innerRegistrationTolMm",
     "value": 0.075,
     "unit": "mm",
     "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)",
     "verified": false,
     "affects": [
      "ipc6012"
     ]
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "ipc6012.outerRegistrationTolMm",
     "value": 0.05,
     "unit": "mm",
     "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)",
     "verified": false,
     "affects": [
      "ipc6012"
     ]
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "ipcClass",
     "value": "2",
     "citation": "IPC-6012 Class 2 (dedicated service) - the general commercial default",
     "verified": true,
     "affects": []
    },
    {
     "source": "default",
     "analysis": "cert",
     "key": "motC",
     "value": 105,
     "citation": "requested MOT 105 C (FR-4 laminates' common UL RTI)",
     "verified": false,
     "affects": [],
     "unit": "C"
    },
    {
     "source": "default",
     "analysis": "returnPath",
     "key": "erEff",
     "value": 4,
     "citation": "effective epsilon_r 4 for the stitching distance (NativeCAD default)",
     "verified": false,
     "affects": []
    },
    {
     "source": "derived",
     "analysis": "returnPath",
     "key": "planes",
     "value": [],
     "citation": "inner layer with >= 30 % pour cover of one net (outer: >= 80 % and no other net's traces); voids = holes >= 2 mm^2 in that net's pours, as bounding rectangles",
     "affects": [
      "every finding"
     ]
    },
    {
     "source": "default",
     "analysis": "returnPath",
     "key": "riseTimeNs",
     "value": 1,
     "citation": "edge rise time 1 ns, f_knee = 0.35 / t_r (Johnson & Graham)",
     "verified": true,
     "affects": [],
     "unit": "ns"
    }
   ]
  },
  "refused": {
   "before": [
    {
     "analysis": "cert.creepage",
     "reasonCode": "pcb_analysis_needs_input",
     "needs": [
      "cert.pairs[].a",
      "cert.pairs[].b",
      "cert.pairs[].workingVrms"
     ],
     "remedy": "creepage needs the net pairs and the working voltage between them; UL 796 and IPC-6012 ran without them",
     "requested": false
    },
    {
     "analysis": "returnPath",
     "reasonCode": "pcb_analysis_needs_input",
     "needs": [
      "a reference plane (a poured copper layer)"
     ],
     "remedy": "no layer of this board is a plane, so there is no return path to check",
     "requested": false
    }
   ],
   "after": [
    {
     "analysis": "cert.creepage",
     "reasonCode": "pcb_analysis_needs_input",
     "needs": [
      "cert.pairs[].a",
      "cert.pairs[].b",
      "cert.pairs[].workingVrms"
     ],
     "remedy": "creepage needs the net pairs and the working voltage between them; UL 796 and IPC-6012 ran without them",
     "requested": false
    },
    {
     "analysis": "returnPath",
     "reasonCode": "pcb_analysis_needs_input",
     "needs": [
      "a reference plane (a poured copper layer)"
     ],
     "remedy": "no layer of this board is a plane, so there is no return path to check",
     "requested": false
    }
   ]
  }
 }
}