> 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/radio/microhard-radio/point-to-multipoint-setup-with-microhard-radio.md).

# Point-to-Multipoint Setup with Microhard Radio

## Sample Wiring Diagram

<figure><img src="/files/uyGihk8QPj4ILdv3DPCw" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Note that the above Diagram shows RTK connection, but the telemetry connections apply to normal GPS as well. &#x20;
{% endhint %}

## Point to Multipoint Connection Using Microhard Radio

### Telemetry Radio Setup

First, Select one of the Radios as the Master, and the other Radios as the Remote. Use the [Pico configurator](/radio/microhard-radio/download.md) to set the Master to PMP Master mode, and change the baud rate to 57600. As shown in the figure below:&#x20;

1. Select PMP Master&#x20;
2. Click Default Unit&#x20;
3. Select 57600 baud rate&#x20;
4. Click PGM/Save.

<figure><img src="/files/DoTdjBh9vtSX3PC3ppsp" alt=""><figcaption><p>Pico Configuator - Master</p></figcaption></figure>

Then, set all the Remote Radios to PMP Remote mode, and change the baud rate to 57600. As shown below:&#x20;

1. Select PMP Remote&#x20;
2. Click Default Unit&#x20;
3. Confirm that the Network Address is consistent with the Master&#x20;
4. Set a unique  Unit Address different for each Remote Radio.&#x20;
5. Select 57600 baud rate&#x20;
6. Click PGM/Save.

<figure><img src="/files/8kNNy6gPTlx0CmvBBQJa" alt=""><figcaption><p>Pico Configuator - Remote</p></figcaption></figure>

### Flight Controller Settings

Connect the flight controller via USB and set an ID for each flight controller that is different from other flight controllers.

**For PX4 firmware**, the MAV\_SYS\_ID parameter should be set

**For Ardupilot firmware**, the SYSID\_THISMAV parameter should be set

<figure><img src="https://lh6.googleusercontent.com/PEN7RJls8xOHfZDPp5cFcTqejrZJTmJgnbjueaWf4E3ZZQauMH4I5h4Ijfbwa1MEj7UBOBJx5hYGuuX5yA6DcAn1nUsIsc22fvARdA68d8VQ6lkuQ9_RCEtD6oSEUmOe6zbdGJo64wNkRdz9A8-bHQ" alt=""><figcaption></figcaption></figure>

Use the Master Radio to connect to the ground station (QGC/MissionPlanner), and the Remote Radio to connect to the flight controllers. \
\
If using RTK system, wait for the Base Survey-in to distribute the RTCM data of a Base to multiple Rover after powering on.&#x20;

<br>


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