{
 "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": "wemos-lolin-d1-mini-v4-esp8266",
 "name": "WEMOS LOLIN D1 mini v4 (ESP8266)",
 "kind": "modern",
 "category": "Electronics",
 "group": "Microcontroller boards",
 "year": null,
 "question": "What are the dimensions of the WEMOS LOLIN D1 mini v4 (ESP8266)?",
 "tags": [
  "esp8266",
  "d1 mini"
 ],
 "aliases": [
  "wemos lolin d1 mini v4 (esp8266) dimensions",
  "wemos lolin d1 mini v4 (esp8266) size",
  "wemos lolin d1 mini v4 (esp8266) mounting holes",
  "wemos lolin d1 mini v4 (esp8266) medidas",
  "wemos lolin d1 mini v4 (esp8266) Maße"
 ],
 "overall_mm": {
  "length": 25.4,
  "width": 34.3,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/wemos-lolin-d1-mini-v4-esp8266/",
 "sheet_txt": "https://xemstudio.com/objects/wemos-lolin-d1-mini-v4-esp8266/sheet.txt",
 "sheet": {
  "basis": "WEMOS (dimension drawing)",
  "overall_mm": {
   "length": 25.4,
   "width": 34.3,
   "height": null
  },
  "notes": [
   "WEMOS LOLIN D1 mini v4 (ESP8266): 25.4 × 34.3 mm, 3 g. Drawing 34.3 × 25.4 mm; WEMOS's spec table says 34.2 × 25.6 mm. Header rows 22.86 mm apart on 2.54 mm pitch.",
   "Mounting holes: 2 × Ø2.0 mm on the top edge, first 2.5 mm from the left edge, 20.4 mm apart (vertical position not dimensioned).",
   "The file is the outline; components and connectors are not modelled."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "size",
     "25.4 × 34.3 mm (board outline)"
    ],
    [
     "mounting holes",
     "2 × Ø2.0 mm on the top edge, first 2.5 mm from the left edge, 20.4 mm apart (vertical position not dimensioned)"
    ],
    [
     "weight",
     "3 g"
    ]
   ]
  }
 },
 "sheet_text": "WEMOS LOLIN D1 mini v4 (ESP8266) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/wemos-lolin-d1-mini-v4-esp8266/  (CC BY 4.0)\nBasis: WEMOS (dimension drawing)\nCatalog version: 2026-10-20\n\nOverall (mm): length 25.4, width 34.3\n- WEMOS LOLIN D1 mini v4 (ESP8266): 25.4 × 34.3 mm, 3 g. Drawing 34.3 × 25.4 mm; WEMOS's spec table says 34.2 × 25.6 mm. Header rows 22.86 mm apart on 2.54 mm pitch.\n- Mounting holes: 2 × Ø2.0 mm on the top edge, first 2.5 mm from the left edge, 20.4 mm apart (vertical position not dimensioned).\n- The file is the outline; components and connectors are not modelled.\n\ndimension  value\nsize  25.4 × 34.3 mm (board outline)\nmounting holes  2 × Ø2.0 mm on the top edge, first 2.5 mm from the left edge, 20.4 mm apart (vertical position not dimensioned)\nweight  3 g\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- WEMOS: WEMOS LOLIN D1 mini v4 (ESP8266) — web — Publisher's page; dimensions are facts — https://github.com/wemos/docs/blob/master/docs/en/_static/files/dim_d1_mini_v4.0.0.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/wemos-lolin-d1-mini-v4-esp8266/index.json\nAPI: https://xemstudio.com/api/geometry?object=wemos-lolin-d1-mini-v4-esp8266\n",
 "sources": [
  {
   "publisher": "WEMOS",
   "title": "WEMOS LOLIN D1 mini v4 (ESP8266)",
   "url": "https://github.com/wemos/docs/blob/master/docs/en/_static/files/dim_d1_mini_v4.0.0.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "nodemcu-esp8266-devkit-v1-0",
  "nodemcu-v3-lolin-esp8266-clone",
  "wemos-lolin-s2-mini-esp32-s2",
  "esp32-c3-supermini",
  "sparkfun-pro-micro"
 ],
 "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 WEMOS LOLIN D1 mini v4 (ESP8266)?",
   "a": "25.4 × 34.3 mm; holes 2 × Ø2.0 mm on the top edge, first 2.5 mm from the left edge, 20.4 mm apart (vertical position not dimensioned)."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "wemos-lolin-d1-mini-v4-esp8266-outline",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/wemos-lolin-d1-mini-v4-esp8266/wemos-lolin-d1-mini-v4-esp8266-outline.step",
   "stl": "https://xemstudio.com/files/hardware/wemos-lolin-d1-mini-v4-esp8266/wemos-lolin-d1-mini-v4-esp8266-outline.stl",
   "note": "25.4 × 34.3 mm; 1.6 mm plate (thickness not published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/wemos-lolin-d1-mini-v4-esp8266/index.md"
}