# SpeedyBee F405 V4 flight controller (30×30)

> What are the dimensions of the SpeedyBee F405 V4 flight controller (30×30)?

- Category: Drones › Flight controllers and ESCs
- Kind: Modern device
- Basis: Secondary source: Betaflight, KiwiQuads (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/speedybee-f405-v4-flight-controller/ · JSON: https://xemstudio.com/api/geometry?object=speedybee-f405-v4-flight-controller · Plain text: https://xemstudio.com/objects/speedybee-f405-v4-flight-controller/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 41.6 | 39.4 | 7.8 |

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

## Notes

- The F405 V4 is the FC half of the SpeedyBee F405 V4 30×30 stack.
- The file is a 41.6 × 39.4 × 7.8 mm block with four Ø4 holes on the 30.5 mm square; the board outline is not rectangular in reality and connector positions are not modelled.
- The pattern is assumed centred on the published board size, since an offset is not published.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

## Sizes

| dimension | value |
|---|---|
| Board size | 41.6 × 39.4 × 7.8 mm |
| Mounting pattern | 30.5 × 30.5 mm |
| Mounting hole | Ø4 mm (grommeted) |
| Weight | 10.5 g |

## Where the files are

- Betaflight: [SpeedyBee F405 V4 board wiki](https://betaflight.com/docs/wiki/boards/current/SPEEDYBEEF405V4) — web — Publisher's page; dimensions are facts
- KiwiQuads: [SpeedyBee F405 V4 BLS 55A 30×30 stack](https://www.kiwiquads.co.nz/product/speedybee-f405-v4-bls-55a-30x30-stack-2) — web — Publisher's page; dimensions are facts

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

Index: https://xemstudio.com/files/hardware/speedybee-f405-v4-flight-controller/index.json

- speedybee-f405-v4-flight-controller-board: [STEP](https://xemstudio.com/files/hardware/speedybee-f405-v4-flight-controller/speedybee-f405-v4-flight-controller-board.step) · [STL](https://xemstudio.com/files/hardware/speedybee-f405-v4-flight-controller/speedybee-f405-v4-flight-controller-board.stl) — Board 41.6 × 39.4 × 7.8 mm with its published mounting holes (holes centred on the board)

## Questions

**What is the SpeedyBee F405 V4 mounting pattern?**

30.5 × 30.5 mm with 4 mm grommeted holes; the board is 41.6 × 39.4 × 7.8 mm.

## Fits with

- [FPV drone motor sizes: 1104 to 3115, shaft, prop thread and mount patterns](https://xemstudio.com/objects/fpv-drone-motors/)
- [SpeedyBee BLS 55A 4-in-1 ESC (30×30)](https://xemstudio.com/objects/speedybee-bls-55a-4in1-esc-30x30/)
- [SpeedyBee F405 Mini (F405 V3 20×20) flight controller](https://xemstudio.com/objects/speedybee-f405-mini-flight-controller-20x20/)
- [SpeedyBee 35A BLHeli_S Mini V2 4-in-1 ESC (20×20)](https://xemstudio.com/objects/speedybee-35a-bls-mini-v2-esc-20x20/)