> For the complete documentation index, see [llms.txt](https://support.senterasensors.com/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.senterasensors.com/home/6x-series-sensors-user-guide/incident-light-sensor-and-gps/installation/freefly-astro.md).

# Freefly Astro

## Astro Light Sensor / GPS Mast Types

Astro Drones use two different types of masts to mount the Light Sensor / GPS module. Follow the installation instructions for the mast which came with your drone. 

{% hint style="warning" %}
Verify the type of propellers on your drone before installing the Black Light Sensor Mast. Click here to learn how to identify your propellers.  [#identify-propeller-type](#identify-propeller-type "mention")
{% endhint %}

***

## Red Light Sensor / GPS Mast

<div><figure><img src="/files/5Dl6E3KxUDtXZRDt02Ug" alt=""><figcaption></figcaption></figure> <figure><img src="/files/QEvQEvgPe2wvT2Z3eYVV" alt=""><figcaption></figcaption></figure></div>

### Instructions

{% stepper %}
{% step %}

### Attach Mounting Tray

Attach the mounting tray to the mast using the attached adhesive tape.
{% endstep %}

{% step %}

### Remove Screws

The mast will be installed on the left side of the aircraft. Remove the two screws from the **back mounting position**.&#x20;

<figure><img src="/files/JyxCnu2yMVBrvgYNr0Og" alt="" width="375"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Install Mast

Orient the mast as shown below. Install the mast in the **back mounting position** on the left side of the drone.&#x20;

Use the screws provided with the 6X kit to secure the mast.

{% hint style="info" %}
If using the Sentera extended landing gear, replace the removed screws with the screws from the 6X kit. They are slightly longer than the screws provided with the extended gear.&#x20;
{% endhint %}

<figure><img src="/files/YnD3VZUvx1idrJbjlmJh" alt="" width="375"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Install Light Sensor and Connect the USB-C Cable

Install the light sensor such that the USB-C port is facing towards the **front of the aircraft**.&#x20;

Connect the the non-right angle end of the provided USB-C to USB-C cable into the light sensor as shown below.&#x20;

<figure><img src="/files/tzcKYOLnQOIy1ji2Ef1p" alt="" width="375"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Install the 6X

Install the 6X into the dovetail mount and secure the latch.&#x20;

<figure><img src="/files/1U1UChzv6z5HHB96aZzb" alt="" width="375"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Connect the USB-C Cable to the 6X

Connect the right angle end of the provided USB-C to USB-C cable to the port on the gimbal.&#x20;

{% hint style="warning" %}
Do NOT connect the cable to the USB-C port on the side of the sensor.&#x20;
{% endhint %}

{% hint style="info" %}
Connect the Right Angle connecter into the USB-C port such that the cable is pointing upwards. This position ensures there is sufficient slack in the cable.
{% endhint %}

Then secure the cable in the cable clip on the side of the drone.

<figure><img src="/files/QWHnuDzyGcO7aEYO7B1H" alt="" width="375"><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}

***

## Black Light Sensor / GPS Mast  <a href="#astro-max-with-high-efficiency-props" id="astro-max-with-high-efficiency-props"></a>

### Identify Propeller Type

Before installing the black mast, verify the type of propellers on your drone. This will determine how to safely install your mast.&#x20;

Reference the markings on your propellers to determine if they are type 2270 or type 2170.&#x20;

<figure><img src="/files/xVLsxfMWi5HdrUmp4ULK" alt=""><figcaption></figcaption></figure>

## High Efficiency Propellers - Type 2270 <a href="#astro-max-with-high-efficiency-props" id="astro-max-with-high-efficiency-props"></a>

For Astro Drones that have been updated with the high efficiency propellers use the following installation instructions for the Black Mast.

{% stepper %}
{% step %}

### Remove Screws (Sentera extended landing gear only)

Remove the forward mounting screws from the extended landing gear
{% endstep %}

{% step %}

### Install Mast

Orient the mast as shown below. This is flipped 180 degrees from the normal installation. The platform should now hang over the top of the aircraft batteries.

Use the screws provided with the 6X kit and mount the mast to the **forward mounting locations** as shown.

{% hint style="info" %}
If using the Sentera extended landing gear, replace the removed screws with the screws from the 6X kit. They are slightly longer than the screws provided with the extended gear.
{% endhint %}
{% endstep %}

{% step %}

### Install the Light Sensor

Install the light sensor such that the USB-C port is facing towards the rear of the aircraft.
{% endstep %}

{% step %}

### Connect the USB-C Cable to the Light Sensor

Connect the non-right angle end of the provided USB-C to USB-C cable into the light sensor as shown.Then secure it in the cable clip.
{% endstep %}

{% step %}

### Install the 6X

Install the 6X into the dovetail mount and secure the latch.
{% endstep %}

{% step %}

### Connect the USB-C Cable to the 6X

Connect the right angle end of the provided USB-C to USB-C cable to the port on the gimbal.

{% hint style="warning" %}
Do NOT connect the cable to the USB-C port on the side of the sensor.
{% endhint %}
{% endstep %}
{% endstepper %}

<figure><img src="/files/08H3cNRj2UBQcUoP633K" alt=""><figcaption></figcaption></figure>

***

## Traditional Propellers - Type 2170  <a href="#astro-max-with-high-efficiency-props" id="astro-max-with-high-efficiency-props"></a>

### Instructions

1. Attach the mounting tray to the mast using the attached adhesive tape.&#x20;
2. Use the provided M3 x 8mm screws and 2.5mm hex driver (provided with Astro) to attach the mast to the aircraft.&#x20;

{% hint style="info" %}
When installed correctly the Light Sensor/GPS mount should allow the Astro to fit in the case while still attached. However, the light sensor itself will need to be removed from the mounting tray.&#x20;
{% endhint %}

<figure><img src="/files/1w02twgmWV8OjIZQtXG9" alt="" width="375"><figcaption></figcaption></figure>