# WEMOS LOLIN D1 mini v4 (ESP8266)

> What are the dimensions of the WEMOS LOLIN D1 mini v4 (ESP8266)?

- Category: Electronics › Microcontroller boards
- Kind: Modern device
- Basis: WEMOS (dimension drawing)
- Page: https://xemstudio.com/objects/wemos-lolin-d1-mini-v4-esp8266/ · JSON: https://xemstudio.com/api/geometry?object=wemos-lolin-d1-mini-v4-esp8266 · Plain text: https://xemstudio.com/objects/wemos-lolin-d1-mini-v4-esp8266/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width |
|---|---|
| 25.4 | 34.3 |

**Exact dimensions.** True size, with no printing tolerance added.

## 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.

## Sizes

| dimension | value |
|---|---|
| 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 |

## Where the files are

- WEMOS: [WEMOS LOLIN D1 mini v4 (ESP8266)](https://github.com/wemos/docs/blob/master/docs/en/_static/files/dim_d1_mini_v4.0.0.pdf) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/wemos-lolin-d1-mini-v4-esp8266/index.json

- wemos-lolin-d1-mini-v4-esp8266-outline: [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) — 25.4 × 34.3 mm; 1.6 mm plate (thickness not published)

## Questions

**How big is the WEMOS LOLIN D1 mini v4 (ESP8266)?**

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).

## Fits with

- [NodeMCU ESP8266 DevKit v1.0](https://xemstudio.com/objects/nodemcu-esp8266-devkit-v1-0/)
- [NodeMCU v3 LoLin ESP8266 (clone)](https://xemstudio.com/objects/nodemcu-v3-lolin-esp8266-clone/)
- [WEMOS LOLIN S2 mini (ESP32-S2)](https://xemstudio.com/objects/wemos-lolin-s2-mini-esp32-s2/)
- [ESP32-C3 SuperMini](https://xemstudio.com/objects/esp32-c3-supermini/)
- [SparkFun Pro Micro](https://xemstudio.com/objects/sparkfun-pro-micro/)