# MS4525DO & MS5525DSO I2C Airspeed Sensor

## Ardupilot quick start guide

{% hint style="info" %}
Airspeed sensors are best paired with fixed-wing type airframe
{% endhint %}

In MissionPlanner, set *ARSPD\_TYPE* to *1* for MS4525 or *4* for MS5525. *Write Parameters* and power cycle the flight controller. 

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

![](/files/KVAcDXUJmhiiNVkCsUrK)

{% embed url="<https://ardupilot.org/plane/docs/calibrating-an-airspeed-sensor.html#calibrating-an-airspeed-sensor>" %}
Calibration guide
{% endembed %}

{% embed url="<https://ardupilot.org/copter/docs/common-airspeed-sensor.html>" %}
Ardupilot airspeed wiki
{% endembed %}

## PX4 quick start guide

In QGC, set *SENS\_EN\_MS4525DO* or *SENS\_EN\_MS5525DS* to enable. *Reboot Vehicle* or power cycle the flight controller.

<figure><img src="/files/CTOLMcLz5PvDPRfF8K2q" alt=""><figcaption></figcaption></figure>

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

<figure><img src="/files/VN6WbcOL1nDv3WsWXbf9" alt=""><figcaption></figcaption></figure>

Make sure to calibrate the airspeed sensor for accurate reading.

<figure><img src="/files/avqhuTwr7ppIEMw08ZFd" alt=""><figcaption></figcaption></figure>

{% embed url="<https://docs.px4.io/main/en/sensor/airspeed.html>" %}
PX4 airspeed sensor guide
{% endembed %}


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