> For the complete documentation index, see [llms.txt](https://docs.holybro.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.holybro.com/peripherals/as1318c-airspeed-sensor.md).

# AS1318C Airspeed Sensor

## Ardupilot quick start guide

{% hint style="info" %}
Complete configuration and calibration are only available in the fixed-wing type airframe configuration
{% endhint %}

In MissionPlanner, set *ARSPD\_TYPE* to *1*. *Write Parameters* and power cycle the flight controller.&#x20;

Once configured, you should see airspeed data on the main UI or the status list:

<figure><img src="https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2FjOrzEImSEgpSPOASvECD%2Fimage.png?alt=media&amp;token=7bacc974-146e-43f8-ad23-2a984a628b8e" alt=""><figcaption></figcaption></figure>

## PX4 quick start guide

In QGC, set *SENS\_EN\_MS4525DO* to enable. *Reboot Vehicle* or power cycle the flight controller.

<figure><img src="https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2F9xAq4iejv2T5H8po3pbp%2Fimage.png?alt=media&amp;token=5fa66547-95f9-4c6a-bc45-d236063c7c6d" alt=""><figcaption></figcaption></figure>

Once set, you should see the airspeed reading on the main interface:

<figure><img src="https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2FpQEAv20cfGjFtzALtEGf%2Fimage.png?alt=media&amp;token=ff26adb5-23d3-4e32-affd-19a1727a895a" alt=""><figcaption></figcaption></figure>

Make sure to calibrate the airspeed sensor for accurate reading.

<figure><img src="https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2Ft6PM1F4KUO6dLwwPUxcY%2Fimage.png?alt=media&amp;token=e36e1b14-3514-4a75-8908-13e13fc879a6" alt=""><figcaption></figcaption></figure>


---

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