{
 "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-pi-hats-bonnets",
 "name": "Adafruit Raspberry Pi HATs and Bonnets (PiTFT, Motor HAT, RGB Matrix, BrainCraft, Speaker, Joy, CRICKIT…)",
 "kind": "modern",
 "category": "Electronics",
 "group": "Modules & cameras",
 "year": null,
 "question": "What are Raspberry Pi HAT and Bonnet dimensions?",
 "tags": [
  "hat",
  "bonnet",
  "raspberry pi",
  "adafruit",
  "pitft"
 ],
 "aliases": [
  "raspberry pi hat dimensions",
  "pi bonnet size",
  "pitft 2.8 dimensions",
  "pitft 3.5",
  "rgb matrix bonnet",
  "braincraft hat",
  "motor hat dimensions"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": true,
 "xem_status": "free-files",
 "les": false,
 "free_files": 20,
 "url": "https://xemstudio.com/objects/adafruit-pi-hats-bonnets/",
 "sheet_txt": "https://xemstudio.com/objects/adafruit-pi-hats-bonnets/sheet.txt",
 "sheet": {
  "basis": "Adafruit CAD (MIT); HAT spec 65 × 56.5 mm with the Pi's four Ø2.75 holes on 58 × 49 mm; Bonnets 65 × 30 mm (Pi Zero outline)",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "HAT: 65 × 56.5 mm board, four Ø2.75 mm holes on 58 × 49 mm matching the Pi, 2×20 socket 2.54 mm; stacks at 11 mm above the Pi board (16 mm with the 11 mm standoff). Rounded corners R3.",
   "Bonnet: 65 × 30 mm (Pi Zero outline), two holes 58 mm apart (some four on 58 × 23 mm). Bonnets fit any Pi.",
   "PiTFT 2.8 covers the HAT outline with the display centred; PiTFT 3.5 overhangs to 85 × 56 mm. RGB Matrix Bonnet and BrainCraft add 10–20 mm of height for connectors and the display."
  ],
  "table": {
   "columns": [
    "product",
    "bbox_l_mm",
    "bbox_w_mm",
    "bbox_h_mm"
   ],
   "rows": [
    [
     "2423 PiTFT 2.8",
     85,
     56,
     24.3
    ],
    [
     "2441 PiTFT 3.5",
     97.4,
     56.5,
     18.8
    ],
    [
     "2348 Adafruit Motor HAT",
     65,
     56.5,
     7.2
    ],
    [
     "3211 RGB Matrix Bonnet",
     66.2,
     30.7,
     18.1
    ],
    [
     "4374 BrainCraft HAT",
     65,
     58.5,
     24.4
    ],
    [
     "3346 Adafruit Speaker Bonnet for Pi",
     65,
     31,
     13.8
    ],
    [
     "3464 Joy Bonnet",
     65,
     30.7,
     13.8
    ],
    [
     "3422 Adafruit Arcade Bonnet",
     65,
     30,
     16.1
    ],
    [
     "3386 PiRTC PCF8523",
     21.2,
     20,
     10.3
    ],
    [
     "6365 Pi STEMMA QT Breakout",
     15.3,
     14.7,
     7.1
    ],
    [
     "6418 E-Ink Bonnet",
     65,
     30.9,
     13.8
    ],
    [
     "4863 CYBERDECK Hat",
     77.6,
     65.2,
     18.8
    ],
    [
     "4132 GPIO Expander Bonnet",
     65,
     30.7,
     14.3
    ],
    [
     "4074 LoRa Radio Bonnet",
     65,
     30.7,
     9.4
    ],
    [
     "4280 DC Stepper Motor Bonnet",
     65,
     30.7,
     13.8
    ],
    [
     "4506 TFT Bonnet",
     65,
     30.7,
     16.9
    ],
    [
     "6358 Triple LED Matrix Bonnet",
     65,
     30.7,
     16
    ],
    [
     "4862 CYBERDECK Bonnet",
     65.2,
     51.7,
     18.8
    ],
    [
     "2315 PiTFT 2.2",
     65,
     57,
     10.4
    ],
    [
     "3577 PICO Hat",
     65,
     19,
     1.6
    ]
   ]
  }
 },
 "sheet_text": "Adafruit Raspberry Pi HATs and Bonnets (PiTFT, Motor HAT, RGB Matrix, BrainCraft, Speaker, Joy, CRICKIT…) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/adafruit-pi-hats-bonnets/  (CC BY 4.0)\nBasis: Adafruit CAD (MIT); HAT spec 65 × 56.5 mm with the Pi's four Ø2.75 holes on 58 × 49 mm; Bonnets 65 × 30 mm (Pi Zero outline)\nCatalog version: 2026-10-20\n\nSizes: see table below\n- HAT: 65 × 56.5 mm board, four Ø2.75 mm holes on 58 × 49 mm matching the Pi, 2×20 socket 2.54 mm; stacks at 11 mm above the Pi board (16 mm with the 11 mm standoff). Rounded corners R3.\n- Bonnet: 65 × 30 mm (Pi Zero outline), two holes 58 mm apart (some four on 58 × 23 mm). Bonnets fit any Pi.\n- PiTFT 2.8 covers the HAT outline with the display centred; PiTFT 3.5 overhangs to 85 × 56 mm. RGB Matrix Bonnet and BrainCraft add 10–20 mm of height for connectors and the display.\n\nproduct  bbox_l_mm  bbox_w_mm  bbox_h_mm\n2423 PiTFT 2.8  85.0  56.0  24.3\n2441 PiTFT 3.5  97.4  56.5  18.8\n2348 Adafruit Motor HAT  65.0  56.5  7.2\n3211 RGB Matrix Bonnet  66.2  30.7  18.1\n4374 BrainCraft HAT  65.0  58.5  24.4\n3346 Adafruit Speaker Bonnet for Pi  65.0  31.0  13.8\n3464 Joy Bonnet  65.0  30.7  13.8\n3422 Adafruit Arcade Bonnet  65.0  30.0  16.1\n3386 PiRTC PCF8523  21.2  20.0  10.3\n6365 Pi STEMMA QT Breakout  15.3  14.7  7.1\n6418 E-Ink Bonnet  65.0  30.9  13.8\n4863 CYBERDECK Hat  77.6  65.2  18.8\n4132 GPIO Expander Bonnet  65.0  30.7  14.3\n4074 LoRa Radio Bonnet  65.0  30.7  9.4\n4280 DC Stepper Motor Bonnet  65.0  30.7  13.8\n4506 TFT Bonnet  65.0  30.7  16.9\n6358 Triple LED Matrix Bonnet  65.0  30.7  16.0\n4862 CYBERDECK Bonnet  65.2  51.7  18.8\n2315 PiTFT 2.2  65.0  57.0  10.4\n3577 PICO Hat  65.0  19.0  1.6\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Adafruit (official): Adafruit_CAD_Parts: STEP, Fusion 360 and STL for Adafruit products — STEP, F3D, STL — MIT — https://github.com/adafruit/Adafruit_CAD_Parts\n\nFree files (MIT License (Adafruit_CAD_Parts), Adafruit Industries; STEP + STL, 20 parts): https://xemstudio.com/files/adafruit/adafruit-pi-hats-bonnets/index.json\nAPI: https://xemstudio.com/api/geometry?object=adafruit-pi-hats-bonnets\n",
 "sources": [
  {
   "publisher": "Adafruit (official)",
   "title": "Adafruit_CAD_Parts: STEP, Fusion 360 and STL for Adafruit products",
   "url": "https://github.com/adafruit/Adafruit_CAD_Parts",
   "formats": [
    "STEP",
    "F3D",
    "STL"
   ],
   "license": "MIT",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "raspberry-pi-5",
  "raspberry-pi-4-b",
  "raspberry-pi-zero-2-w",
  "threaded-standoffs-metric",
  "pin-headers-2.54mm"
 ],
 "faq": [
  {
   "q": "What are Raspberry Pi HAT dimensions?",
   "a": "65 × 56.5 mm with four Ø2.75 mm holes on 58 × 49 mm, the same as the Pi's; 11 mm standoffs between the Pi and the HAT."
  },
  {
   "q": "What is the difference between a HAT and a Bonnet?",
   "a": "Size: a HAT is 65 × 56.5 mm (full Pi width), a Bonnet is 65 × 30 mm (Pi Zero width); both use the 40-pin header and fit any Pi."
  },
  {
   "q": "How much height does a HAT add?",
   "a": "About 11 mm board-to-board plus the component height; plan 25 mm above the Pi board for most HATs, 30 mm for the PiTFT with its display."
  }
 ],
 "files_license": {
  "name": "MIT License (Adafruit_CAD_Parts)",
  "holder": "Adafruit Industries",
  "url": "https://github.com/adafruit/Adafruit_CAD_Parts/blob/main/LICENSE",
  "note": "Direct links to Adafruit's own CAD repository on GitHub (MIT). Xem Studio computed the bounding boxes from the STEP files and hosts nothing. Adafruit does not endorse this site."
 },
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  },
  {
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  },
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 "markdown": "https://xemstudio.com/objects/adafruit-pi-hats-bonnets/index.md"
}