Solar MPPT Power System - export.json

by TylerK

A 30 W solar battery charger with regulated 5 V and 3.3 V rails: an STM32G031 running perturb & observe MPPT and a CC/CV charge state machine, steering a TI LM5175 4-switch buck-boost through a single analog control input. Four-layer KiCad board, schematic and PCB generated from Python, with an electrothermal simulation run against the published board file.

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AdityaAngajala Add fabrication sources and export provenance for molecule builds 67c9559 22d ago

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{
  "exporter": "board-look fab.py (backfill)",
  "tool": "kicad-cli",
  "toolVersion": "10.0.3",
  "tier": "kicad-board",
  "backfill": {
    "note": "Retrospective fabrication plot from the recorded board source; existing STEP and models are unchanged.",
    "source": {
      "path": "kicad/mppt-power-system.kicad_pcb",
      "sha256": "bf1394cbc902f460376c5ec1d0044933eb1f08278029f553eedad360bfe1290f",
      "gitBlob": "46945ac743431048adbcb4bfa0d0fb65e90508f0",
      "commit": "805d738419a9f014a2c0e1c5c19dfbaeb35c6af3"
    },
    "commands": [
      "kicad-cli pcb export gerbers --layers F.Cu,B.Cu,F.Mask,B.Mask,F.Silkscreen,B.Silkscreen,Edge.Cuts --check-zones --no-netlist",
      "kicad-cli pcb export drill --format excellon --excellon-units mm --excellon-separate-th --drill-origin absolute"
    ],
    "datesRemoved": true
  },
  "files": [
    {
      "path": "kicad/mppt-power-system.kicad_pcb",
      "role": "board_kicad_pcb",
      "bytes": 2691015,
      "sha256": "bf1394cbc902f460376c5ec1d0044933eb1f08278029f553eedad360bfe1290f"
    },
    {
      "path": "mppt-power-system-fab.zip",
      "role": "fab_zip",
      "bytes": 320285,
      "sha256": "bfdbf4ef5f3923b9bf4f3ce8f80ff3a8286389ce910c8aeb57f5905f103b0dfb",
      "entries": [
        {
          "path": "mppt-power-system-B_Cu.gbl",
          "role": "copper_bottom",
          "bytes": 350614,
          "sha256": "27070b20f0b5cdd9c29fb275c45a57953770207b36f0b5e77a0cce09589d726b"
        },
        {
          "path": "mppt-power-system-B_Mask.gbs",
          "role": "mask_bottom",
          "bytes": 2698,
          "sha256": "6fd0c9ec8252bc4f5c77338677323d536737a7890e898de12d28db3f55cef311"
        },
        {
          "path": "mppt-power-system-B_Silkscreen.gbo",
          "role": "silk_bottom",
          "bytes": 412,
          "sha256": "811f2d89017b84dc47fb6e9317dd899af41d49ddabed91c8590424d6d734f061"
        },
        {
          "path": "mppt-power-system-Edge_Cuts.gm1",
          "role": "outline",
          "bytes": 633,
          "sha256": "174b259de481250ae3abada856a19617d554ec72acca97d7d49d291bbb221625"
        },
        {
          "path": "mppt-power-system-F_Cu.gtl",
          "role": "copper_top",
          "bytes": 752892,
          "sha256": "5e5d2af3aed9cf45d71bc846fd2cd1de7c9c01f105f30896054ea0d3d91ab9d6"
        },
        {
          "path": "mppt-power-system-F_Mask.gts",
          "role": "mask_top",
          "bytes": 13267,
          "sha256": "d6f5c4635b163ed47d31876a065beb9b5c2e68ae5c7e054e5da9dda46c55cb40"
        },
        {
          "path": "mppt-power-system-F_Silkscreen.gto",
          "role": "silk_top",
          "bytes": 199539,
          "sha256": "2e10c03a9f5f681eb636f11c2450c71789f2a61055a4dcb918cd396a4bd0a965"
        },
        {
          "path": "mppt-power-system-NPTH.drl",
          "role": "drill_unplated",
          "bytes": 233,
          "sha256": "a8c7b157d69f105d2c5fa382ae93eef554bcb982a302313c72d270a6b518d158"
        },
        {
          "path": "mppt-power-system-PTH.drl",
          "role": "drill_plated",
          "bytes": 6140,
          "sha256": "edd15f5edf28d983b95ec6827af1e67cc28be6737844dd23c7833826441590b2"
        },
        {
          "path": "mppt-power-system-job.gbrjob",
          "role": "gerber_job",
          "bytes": 3267,
          "sha256": "14ec013de263fc1d60e789756f351773e550c834b87a1257824d7dfa4f978dd5"
        }
      ]
    }
  ],
  "stackup": {
    "thicknessMm": 1.6,
    "finish": "HASL"
  },
  "schema": "adom.export/1",
  "exporterVersion": "backfill-2026-10-19",
  "gerbers": {
    "included": true
  },
  "drill": {
    "plating": "split"
  }
}