{
 "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": "arduino-uno-r3",
 "name": "Arduino Uno R3",
 "kind": "modern",
 "category": "Electronics",
 "group": "Microcontroller boards",
 "year": 2010,
 "question": "What are the Arduino Uno board dimensions and mounting holes?",
 "tags": [
  "microcontroller",
  "board",
  "enclosure"
 ],
 "aliases": [
  "uno",
  "arduino uno"
 ],
 "overall_mm": {
  "length": 68.6,
  "width": 53.4,
  "height": null
 },
 "official_cad": true,
 "xem_status": "not-scanned",
 "free_files": 0,
 "url": "https://xemstudio.com/objects/arduino-uno-r3/",
 "sheet_txt": "https://xemstudio.com/objects/arduino-uno-r3/sheet.txt",
 "sheet": {
  "basis": "published board outline",
  "overall_mm": {
   "length": 68.6,
   "width": 53.4,
   "height": null
  },
  "mounting_holes": {
   "count": 4,
   "diameter_mm": 3.2,
   "pattern_mm": "see official outline; holes are not on a rectangular grid",
   "screw": "M3"
  },
  "notes": [
   "USB-B and DC barrel jack on the same short edge.",
   "Shield header spacing is the Uno standard (one 0.16 in offset)."
  ]
 },
 "sheet_text": "Arduino Uno R3 — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/arduino-uno-r3/  (CC BY 4.0)\nBasis: published board outline\nCatalog version: 2026-10-20\n\nOverall (mm): length 68.6, width 53.4\nMounting holes: 4 × Ø3.2 mm, pattern see official outline; holes are not on a rectangular grid, screw M3\n- USB-B and DC barrel jack on the same short edge.\n- Shield header spacing is the Uno standard (one 0.16 in offset).\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Arduino (official): UNO R3 documentation, CAD files — STEP, DXF, PDF — see page [verify license at link] — https://docs.arduino.cc/hardware/uno-rev3/\n\nXem Studio scan: not planned; the official CAD above covers it.\nAPI: https://xemstudio.com/api/geometry?object=arduino-uno-r3\n",
 "sources": [
  {
   "publisher": "Arduino (official)",
   "title": "UNO R3 documentation, CAD files",
   "url": "https://docs.arduino.cc/hardware/uno-rev3/",
   "formats": [
    "STEP",
    "DXF",
    "PDF"
   ],
   "license": "see page",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "arduino-mega-2560",
  "arduino-nano",
  "threaded-standoffs-metric"
 ],
 "faq": [
  {
   "q": "What are the Arduino Uno R3 dimensions in mm?",
   "a": "68.6 × 53.4 mm (length × width × height). USB-B and DC barrel jack on the same short edge."
  },
  {
   "q": "What is the Arduino Uno R3 mounting hole pattern?",
   "a": "4 × Ø3.2 mm on a see official outline; holes are not on a rectangular grid mm pattern, M3 screws."
  },
  {
   "q": "Where is the official CAD for the Arduino Uno R3?",
   "a": "Arduino (official): UNO R3 documentation, CAD files (STEP, DXF, PDF, see page). Linked from the sheet; Xem Studio does not rehost it."
  }
 ],
 "offers": [],
 "markdown": "https://xemstudio.com/objects/arduino-uno-r3/index.md"
}