{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "adafruit-metro-mini-328",
 "name": "Adafruit Metro Mini 328",
 "kind": "modern",
 "category": "Electronics",
 "group": "Microcontroller boards",
 "year": 2016,
 "question": "What are the Adafruit Metro Mini 328 dimensions and hole positions?",
 "tags": [
  "microcontroller",
  "board",
  "enclosure",
  "dev board"
 ],
 "aliases": [
  "metro mini",
  "adafruit metro mini 328",
  "metro mini dimensions"
 ],
 "overall_mm": {
  "length": 43.18,
  "width": 17.78,
  "height": 4.9
 },
 "official_cad": true,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/adafruit-metro-mini-328/",
 "sheet_txt": "https://xemstudio.com/objects/adafruit-metro-mini-328/sheet.txt",
 "sheet": {
  "basis": "Adafruit's Eagle board file (Rev B) and the V2 product page",
  "overall_mm": {
   "length": 43.18,
   "width": 17.78,
   "height": 4.9
  },
  "notes": [
   "Board file outline 43.18 × 17.78 mm; the V2 product page gives 44.3 × 17.8 × 4.9 mm overall.",
   "Four 2.2 mm holes from the board file (origin bottom-left): (1.905, 1.905), (1.905, 15.875), (41.021, 1.905), (41.275, 15.875).",
   "Headers on 2.54 mm pitch, rows 15.24 mm (0.6 in) apart: breadboard friendly. Rev B has micro-USB, V2 USB-C."
  ],
  "mounting_holes": {
   "count": 4,
   "diameter_mm": 2.2,
   "pattern_mm": "39.1–39.4 x 13.97 (asymmetric, see notes)",
   "screw": "M2"
  }
 },
 "sheet_text": "Adafruit Metro Mini 328 — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/adafruit-metro-mini-328/  (CC BY 4.0)\nBasis: Adafruit's Eagle board file (Rev B) and the V2 product page\nCatalog version: 2026-10-20\n\nOverall (mm): length 43.18, width 17.78, height 4.9\nMounting holes: 4 × Ø2.2 mm, pattern 39.1–39.4 x 13.97 (asymmetric, see notes), screw M2\n- Board file outline 43.18 × 17.78 mm; the V2 product page gives 44.3 × 17.8 × 4.9 mm overall.\n- Four 2.2 mm holes from the board file (origin bottom-left): (1.905, 1.905), (1.905, 15.875), (41.021, 1.905), (41.275, 15.875).\n- Headers on 2.54 mm pitch, rows 15.24 mm (0.6 in) apart: breadboard friendly. Rev B has micro-USB, V2 USB-C.\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Adafruit (official): Adafruit METRO 328 PCB (Eagle files) — BRD, SCH — Adafruit open hardware — https://github.com/adafruit/Adafruit-METRO-328-PCB\n- Adafruit (official): Metro Mini 328 V2 product page — web — Manufacturer documentation — https://www.adafruit.com/product/5597\n\nXem Studio scan: not planned; the official CAD above covers it.\nAPI: https://xemstudio.com/api/geometry?object=adafruit-metro-mini-328\n",
 "sources": [
  {
   "publisher": "Adafruit (official)",
   "title": "Adafruit METRO 328 PCB (Eagle files)",
   "url": "https://github.com/adafruit/Adafruit-METRO-328-PCB",
   "formats": [
    "BRD",
    "SCH"
   ],
   "license": "Adafruit open hardware",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Adafruit (official)",
   "title": "Metro Mini 328 V2 product page",
   "url": "https://www.adafruit.com/product/5597",
   "formats": [
    "web"
   ],
   "license": "Manufacturer documentation",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "adafruit-metro-grand-central",
  "arduino-nano"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "How big is the Adafruit Metro Mini 328?",
   "a": "43.18 × 17.78 mm (1.70 × 0.70 in), 4.9 mm thick overall."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/adafruit-metro-mini-328/index.md"
}