# Configuring the rover manually

You may want to configure the U-blox chip if you're using a dedicated telemetry link to connect your base and rover module, instead of encapsulating it in the MAVLink protocol.

You can use the U-center software in order to configure precisely the behavior of the M8P chip so that it will achieve exactly what you want.

In order to configure the rover, you'll need:

* 1 Computer, used as ground control station
* 1 Micro USB cable
* **Latest** version of U-Center Software (available [here](https://www.u-blox.com/en/product/u-center-windows))

## Configuring the U-blox chip

First of all, **install the U-Center software** on your computer. When done, you can connect your rover module to your computer. Open the U-Center software after that, and connect it to your rover module using the button in the upper-left corner (receiver toolbar).

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYSZeu4HjB-NrVI4riL%2F-Lk4rbW-SfInQpRVA4-z%2F-Lk4ofQRT8oq9gpnph97%2Fassets_-LYSZ2RX-sZFfz9kI3R4_-LYfmINTmQCPRB-9kG8B_-LYfmZDwg6LTt-eR5ZYT_assets_-LU5o-AXhIoRZaV8E_ja_-LXxPBMWXRQ7I6CVEVWb_-LXxPFofsee0NiJUw33i_a.png?alt=media\&token=25b17b26-c544-40dd-a8e9-6147d50fe6ef)

After connecting, you should be able to enter the **Configuration view** from the top hotbar.

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYSZeu4HjB-NrVI4riL%2F-Lk4rbW-SfInQpRVA4-z%2F-Lk4ohRGg16bsD9B-Jp8%2Fassets_-LYSZ2RX-sZFfz9kI3R4_-LYfmINTmQCPRB-9kG8B_-LYfmdaqWq89IDOxgFp6_assets_-LU5o-AXhIoRZaV8E_ja_-LXxPBMWXRQ7I6CVEVWb_-LXxPIso1aXfULZCjJPy_b.png?alt=media\&token=8f12cd9f-648e-43b5-af4d-2fe8aa345ad8)

> _After any modification made in the Configuration panel, always remember to hit the Send button at the bottom of the configuration view panel, or your modifications won't be stored!_

In the Configuration panel, scroll down to the _PRT (Port)_ section. Here, you need to enter **your autopilot's GPS port's baudrate** to allow it to communicate correctly. It's necessary, as the link between your GPS and the telemetry is purely serial, and there's no other protocol to stipulate a baudrate.

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYSZeu4HjB-NrVI4riL%2F-Lk4rbW-SfInQpRVA4-z%2F-Lk4opWeyCzt1x0FH5l8%2Fassets_-LYSZ2RX-sZFfz9kI3R4_-LYfmINTmQCPRB-9kG8B_-LYfmsGFGzvr9cw_6nFu_assets_-LU5o-AXhIoRZaV8E_ja_-LXxPZZa7Mo2dFNaGvzv_-LXxPbrOEYOLqrfLHWDK_1.png?alt=media\&token=44f563fb-e24e-45fd-95c8-5dbc6a9ab077)

It's also necessary to modify the frequency of the chip. To do this, on the left panel, look for the _**RATE** (Rates)_ menu and modify the _Measurement period_ to 200 ms.

{% hint style="warning" %}
_Don't forget to click Send!_
{% endhint %}

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYSZeu4HjB-NrVI4riL%2F-Lk4rbW-SfInQpRVA4-z%2F-Lk4ouAffz7m4ylDTUWi%2Fassets_-LYSZ2RX-sZFfz9kI3R4_-LYfo96NwWv0dF_k6oj5_-LYfoIwoy0j15Q3pJRU5_assets_-LU5o-AXhIoRZaV8E_ja_-LXxPZZa7Mo2dFNaGvzv_-LXxPrWHmvVpqilhxWda_2.png?alt=media\&token=b2a2feda-46ea-4b57-bafb-06da81428a61)

Next, get into the _**MSG** (Messages)_ menu and disable all NMEA messages.

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYSZeu4HjB-NrVI4riL%2F-Lk4rbW-SfInQpRVA4-z%2F-Lk4ovWP3f04V96G2YM6%2Fassets_-LYSZ2RX-sZFfz9kI3R4_-LYfo96NwWv0dF_k6oj5_-LYfoKF_fJbR0EO5Ntu__assets_-LU5o-AXhIoRZaV8E_ja_-LXxPZZa7Mo2dFNaGvzv_-LXxPyrQIsFJTEZoRbX9_3.png?alt=media\&token=8d8d1d39-b5cd-46d6-83b4-f62683703dea)

After disabling the **NMEA** messages, you should also enable the following messages for the UART1 link:

* NAV-POS-LLH
* NAV-STATUS
* NAV-SOL
* NAV-VELNED

To do so, find each messages in the drop-down list and check the _**UART1**_ box for each of these messages, without omitting to click _**Send**_ for each message.

Modifying the dynamic filter can also help. You can change it in the _**NAV5** (Navigation 5)_ menu, using the first droplist at the top of the menu.

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYSZeu4HjB-NrVI4riL%2F-Lk4rbW-SfInQpRVA4-z%2F-Lk4ppSzfEZiQI4UIFHq%2Fassets_-LYSZ2RX-sZFfz9kI3R4_-LYfo96NwWv0dF_k6oj5_-LYfoLVjegvDIHBiK4L6_assets_-LU5o-AXhIoRZaV8E_ja_-LXxQAR57GYjr9oDBgKG_-LXxQm9qxvVX2IKRn7wv_4.png?alt=media\&token=c03227f0-6fff-46d7-a8a3-98ea4b6ded38)

After doing this tweak, save the whole configuration you've done, by getting into the _**CFG** (Configuration)_ menu on the left panel, selecting all four memories on the right, and clicking _**Send**_.

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYSZeu4HjB-NrVI4riL%2F-Lk4rbW-SfInQpRVA4-z%2F-Lk4rKQevTU9M8whmqqd%2Fassets_-LYSZ2RX-sZFfz9kI3R4_-LYfo96NwWv0dF_k6oj5_-LYfoMo2CzC9jrz0os7T_assets_-LU5o-AXhIoRZaV8E_ja_-LXxQAR57GYjr9oDBgKG_-LXxQr8DjPHwFp07IV1D_5.png?alt=media\&token=6bb8690f-bf91-4037-a80e-3576965238ba)

{% hint style="success" %}
Now that the configuration is stored into the chip, you can disconnect your RTK module from the computer and plug it to your autopilot!
{% endhint %}
