{
  "name": "locus materials sourcing",
  "version": "1.0.0",
  "updated": "2026-07-25",
  "href": "/locus/costs#costs-sourcing",
  "note": "Commercial channels that already sell these part classes. Not exclusive contracts, not price locks, not endorsements. Verify stock and specs before buy.",
  "channels": [
    {
      "id": "electronics_dist",
      "name": "Electronics distributors",
      "examples": ["Digi-Key", "Mouser", "LCSC", "Arrow", "Newark"],
      "covers": ["MCU", "current sense", "piezo discs", "rectifiers", "supercaps", "connectors", "T/RH sensors"]
    },
    {
      "id": "industrial",
      "name": "Industrial / hardware",
      "examples": ["McMaster-Carr", "Grainger", "Misumi", "OnlineMetals"],
      "covers": ["enclosures", "fasteners", "springs", "aluminum extrusion", "gaskets", "cable glands"]
    },
    {
      "id": "solar_retail",
      "name": "Small solar retail & wholesale",
      "examples": ["Renogy", "Victron Energy dealers", "EPEver / Tracer class", "Santan / secondary module brokers", "local solar distributors"],
      "covers": ["10–50 W mono modules", "small MPPT charge controllers", "MC4", "12 V batteries"]
    },
    {
      "id": "optics",
      "name": "Optics & polymer fibre",
      "examples": ["Thorlabs", "Edmund Optics", "Industrial Fiber Optics", "Toray / Mitsubishi POF channel partners", "McMaster acrylic sheet"],
      "covers": ["PMMA plastic optical fibre", "collimators", "frosted acrylic diffuser"]
    },
    {
      "id": "maker",
      "name": "Maker / hobby electronics",
      "examples": ["SparkFun", "Adafruit", "Pololu", "Amazon industrial"],
      "covers": ["logger boards", "INA219-class sense", "piezo elements", "lux sensors"]
    },
    {
      "id": "biology",
      "name": "Live layer biology",
      "examples": ["Moss Acres", "Mountain Moss", "Carolina Biological", "UTEX Culture Collection", "aquarium / hydroponic suppliers"],
      "covers": ["shade moss", "substrate", "Chlorella-class cultures", "trays", "air stones"]
    },
    {
      "id": "membrane",
      "name": "Membrane & recreation mats",
      "examples": ["trampoline mat / spring replacement suppliers", "JumpSport / Skywalker parts channel", "industrial woven elastomer fabric mills", "gym floor mat wholesalers"],
      "covers": ["trampoline-class membrane", "springs", "edge tape", "plaza wear layers"]
    },
    {
      "id": "piezo_specialty",
      "name": "Piezo specialty",
      "examples": ["Piezo.com (Piezo Systems)", "APC International", "STEMiNC", "Murata (via Digi-Key/Mouser)", "TE Connectivity piezo film"],
      "covers": ["PZT discs/stacks", "PVDF film", "high-strain harvester elements"]
    },
    {
      "id": "metrology",
      "name": "Light / climate metrology",
      "examples": ["Apogee Instruments", "LI-COR", "Dr.Meter / UNI-T lux class", "Sensirion (Digi-Key)", "Ocean Insight spectrometers"],
      "covers": ["pyranometer", "lux meter", "T/RH", "optional spectrometer"]
    }
  ],
  "bom_map": [
    { "part": "PV 10–50 W mono", "products": ["P0", "P3"], "source_ids": ["solar_retail"] },
    { "part": "MPPT small controller", "products": ["P0", "P3"], "source_ids": ["solar_retail", "electronics_dist"] },
    { "part": "Power resistors / heatsink", "products": ["P0"], "source_ids": ["electronics_dist", "industrial"] },
    { "part": "MCU logger + current sense", "products": ["P0", "P2", "P3", "RP0"], "source_ids": ["electronics_dist", "maker"] },
    { "part": "PMMA fibre", "products": ["P1", "P3"], "source_ids": ["optics"] },
    { "part": "Collector / collimator / diffuser", "products": ["P1", "P3"], "source_ids": ["optics", "industrial"] },
    { "part": "Enclosures, MC4, fuse, glands", "products": ["P0", "P2", "P3", "RP0"], "source_ids": ["industrial", "solar_retail", "electronics_dist"] },
    { "part": "T/RH sensors", "products": ["P2", "P3"], "source_ids": ["electronics_dist", "metrology"] },
    { "part": "Shade moss + substrate", "products": ["P2", "P3"], "source_ids": ["biology"] },
    { "part": "Green algae culture + vessel", "products": ["P2", "P3"], "source_ids": ["biology"] },
    { "part": "Trampoline / elastomer membrane", "products": ["RP0"], "source_ids": ["membrane"] },
    { "part": "Springs / suspenders", "products": ["RP0"], "source_ids": ["industrial", "membrane"] },
    { "part": "Piezo patches / stacks / PVDF", "products": ["RP0"], "source_ids": ["piezo_specialty", "electronics_dist", "maker"] },
    { "part": "Rectifier + supercap / buffer cell", "products": ["RP0", "P0"], "source_ids": ["electronics_dist", "solar_retail"] },
    { "part": "Structural frame / anchors materials", "products": ["P3", "RP0"], "source_ids": ["industrial"] },
    { "part": "Lux / irradiance instruments", "products": ["P0", "P1", "P3"], "source_ids": ["metrology", "maker"] }
  ]
}