# Parallax Compass Module 3-Axis HMC5883L (#29133): 16.51 × 18.42 mm board and mounting hole

> What are the Parallax HMC5883L compass module (#29133) dimensions and mounting-hole position?

- Category: Electronic components › Modules, sensors & displays
- Kind: Modern device
- Basis: Parallax Compass Module 3-Axis HMC5883L (#29133) product guide, Module Dimensions figure.
- Page: https://xemstudio.com/objects/parallax-hmc5883l-29133/ · JSON: https://xemstudio.com/api/geometry?object=parallax-hmc5883l-29133 · Plain text: https://xemstudio.com/objects/parallax-hmc5883l-29133/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 |
|---|---|---|
| 18.42 | 16.51 | 1.6 |

**Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part.

## Notes

- Datum: board centred on X and Y, bottom on z=0; +Y is the 5-pin header edge (GND, VIN, DRDY, SCL, SDA; GND at the +X end).
- Board 16.51 × 18.42 mm (0.650 × 0.725 in), 1.6 mm, square corners.
- One Ø2.24 (0.088 in) hole at (+0.20, −5.65): centre 8.05 from the +X edge and 14.86 below the +Y edge.
- Not modelled: the 5-pad 0.1 in header and the HMC5883L IC on top.
- Exact nominal mm.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| Mounting hole | 1 × Ø2.24 (0.088 in) | #2 or M2 screw to a standoff | designed | all |
| Header pads | 5 × 0.1 in pitch along +Y edge | 2.54 mm pin header | socket | all |

## Where the files are

- Parallax / RS: [Compass Module 3-Axis HMC5883L (#29133) product guide](https://assets.rs-online.com/v1699303166/Datasheets/8628a425f6aefeb9c3d2839c50503327.pdf) — web — Publisher's page; dimensions are facts
- Parallax / Xon: [Parallax 29133 datasheet](https://xonstorage.blob.core.windows.net/pdf/parallax_29133rt_apr22_xonlink.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/parallax-hmc5883l-29133/index.json

- parallax-hmc5883l-29133: [STEP](https://xemstudio.com/files/hardware/parallax-hmc5883l-29133/parallax-hmc5883l-29133.step) · [STL](https://xemstudio.com/files/hardware/parallax-hmc5883l-29133/parallax-hmc5883l-29133.stl) — Parallax Compass Module 3-Axis HMC5883L (#29133): 16.51 × 18.42 mm board and mounting hole

## Questions

**How big is the Parallax HMC5883L module?**

16.51 × 18.42 mm (0.650 × 0.725 in).

**Where is the mounting hole?**

One Ø2.24 mm hole, 8.05 mm from the side edge and 14.86 mm below the header edge.

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