> For the complete documentation index, see [llms.txt](https://docs.sky-pulse.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sky-pulse.org/documentation/technical-specifications/skynav-gnss-module.md).
# SkyNav GNSS Module
The SkyNav GNSS Module provides a complete navigation solution, based on the best sensors on the market, while being fully compatible with the PixHawk standard and pinout.
based on the uBlox NEO series of receivers, paired with a high accuracy compass and optional barometer and designed for working on **L1** + **L5** bands, the SkyNav module family offers superior performance in GNSS contested environments.
There are two versions of the SkyNav module:
* **SkyNav Standard** - Our most optimized module for SWaP-C, for missions where cost is tight but performance is important.
* **SkyNav Pro RTK** - based on the uBlox F9P RTK receiver, where extreme centimeter-level accuracy is a must, without any compromises.
We know how important a quick warm-start is, so we integrated an onboard backup battery, for getting a 3D-Fix in no time.
***
SkyPulse SkyNav GNSS Module
## Specifications
| Component | SkyNav Standard | SkyNav Pro RTK |
| ------------- | --------------- | -------------- |
| GNSS Receiver | uBlox NEO-F10N | uBlox NEO-F9P |
| Compass | Isentek IST8310 | PNI RM3100 |
| Barometer | Bosch DPS368\* | Bosch DPS368\* |
{% hint style="info" %}
The barometer feature is optional, and can be useful in cases where the flight stack is enclosed in a tight space without an air opening.
{% endhint %}
## Interfaces & Firmware
The module communicates via UART + I2C, and is supported on the following firmware platforms:
| ArduPilot |
| ------------ |
| PX4 |
| INAV |
| BetaFlight\* |
{% hint style="info" %}
\*Only the standard version is supported on Betaflight currently. Pro support is coming soon.
{% endhint %}
{% hint style="success" %}
The pinout for our navigation module is compatible with the PixHawk / Cube standard, so the SkyNav module is completely plug & play if your vehicle is already wired to a compatible GPS (e.g., Here2).
{% endhint %}
## Pinout
SkyNav connects to the flight controller using a 6-pin JST-GH connector:
| Pin # | Function | Group |
| :---: | :------: | :----------------: |
| 1 (V) | VCC | Supply Input |
| 2 (R) | RX | GPS UART |
| 3 (T) | TX | GPS UART |
| 4 (C) | SCL | Baro + Compass I2C |
| 5 (D) | SDA | Baro + Compass I2C |
| 6 (G) | GND | Supply Input |
{% hint style="info" %}
If you'd like to use only the GPS receiver without the compass or baro, you can leave the I2C pins disconnected.
{% endhint %}
## Dimensions
The dimensions for the Standard and the Pro modules are identical: 57.6x40x19.2mm (LxWxH)
Both modules weigh 27g (including enclosure)
## Compass Orientation
The compass orientation is usually detected automatically, but in case you'd like to define it manually, this is the orientation of the compas, assuming that the module is pointed towards the front of the vehicle and is aligned with the flight controller.
| Module | PX4 | Ardupilot |
| ------------------------- | ---- | --------- |
| SkyNav Standard (IST8310) | None | Pitch 180 |
| SkyNav Pro (RM3100) | None | None |
## Manufacturing & NDAA Compliance
{% hint style="success" %}
All of our hardware is 100% NDAA compliant, based on high quality non-Chinese components. Every module goes through rigorous testing to ensure the best quality for our users.
{% endhint %}
