# QGC Not Connecting to the Sentinel

Source: https://forum.modalai.com/topic/2184/qgc-not-connecting-to-the-sentinel
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2023-05-23 13:25:55 UTC by Raza Rizvi
Replies: 7 · Views: 1770

## Raza Rizvi · 2023-05-23 13:25:55 UTC

Hello, I am following this [QuickStart Guide](https://docs.modalai.com/sentinel-quickstart/), but my QGC is unable to connect to the Sentinel drone.

1. The drone is successfully connected to the WiFi

`ifconfig` # On the Drone

![b26b8b23-1bde-4f27-9cb1-ddd1772c3952-image.png](https://forum.modalai.com/assets/uploads/files/1684848111852-b26b8b23-1bde-4f27-9cb1-ddd1772c3952-image.png) 

`ifconfig` # On the Host Laptop

![dbf8b1ed-43f8-4a85-abfa-4e93baa3022f-image.png](https://forum.modalai.com/assets/uploads/files/1684848180596-dbf8b1ed-43f8-4a85-abfa-4e93baa3022f-image.png) 

2. I can Ping from the drone to my Host laptop, and vice-versa

![ad706833-d5e2-49b7-ae02-baabf30e8ded-image.png](https://forum.modalai.com/assets/uploads/files/1684848239357-ad706833-d5e2-49b7-ae02-baabf30e8ded-image.png) 

3. I mentioned the Host IP Address inside the voxl-vision-px4.conf

![a02d4694-04e7-4eea-a0c8-d7fff7a4b4fa-image.png](https://forum.modalai.com/assets/uploads/files/1684848296620-a02d4694-04e7-4eea-a0c8-d7fff7a4b4fa-image.png) 

Still, when running the QGC on Host, it shows disconnected

![08300e25-24e0-4d30-982f-74263dfc9ab2-image.png](https://forum.modalai.com/assets/uploads/files/1684848373433-08300e25-24e0-4d30-982f-74263dfc9ab2-image.png)

## Reply by Adrian Hidalgo (ModalAI staff) · 2023-05-23 14:23:41 UTC

@Raza-Rizvi can you make sure that there's no firewall setup blocking the connection. 

Could you also provide the output of 
```
systemctl status -l voxl-vision-px4
```

## Reply by Raza Rizvi · 2023-05-23 14:58:09 UTC (in reply to Adrian Hidalgo)

@Adrian-Hidalgo 

Yes, the firewall is disabled.

Here's the output to the mentioned command:

![114eda2f-a6a6-4f5e-89a8-299de73faed5-image.png](https://forum.modalai.com/assets/uploads/files/1684853886725-114eda2f-a6a6-4f5e-89a8-299de73faed5-image.png)

The mavlink server is also running

![1c0ec2d3-7345-499e-8413-9079a551b100-image.png](https://forum.modalai.com/assets/uploads/files/1684854639718-1c0ec2d3-7345-499e-8413-9079a551b100-image.png)

## Reply by Adrian Hidalgo (ModalAI staff) · 2023-05-23 15:33:21 UTC

@Raza-Rizvi are you connected over softap or station? 
Can you ssh into the drone?

## Reply by Raza Rizvi · 2023-05-23 16:00:57 UTC (in reply to Adrian Hidalgo)

@Adrian-Hidalgo

I am connected over station. And Yes, I can SSH to the drone.

## Reply by tom (ModalAI staff) · 2023-05-23 16:03:32 UTC

@Raza-Rizvi Please post the output of “voxl-inspect-services” and “voxl-version”

## Reply by Raza Rizvi · 2023-05-23 16:14:03 UTC (in reply to tom)

@tom 

![9a6b9e5f-6e3d-473a-94ea-8f470da73e35-image.png](https://forum.modalai.com/assets/uploads/files/1684858384576-9a6b9e5f-6e3d-473a-94ea-8f470da73e35-image.png) 

![77d90269-a6ce-4981-95ff-119b4169faee-image.png](https://forum.modalai.com/assets/uploads/files/1684858421956-77d90269-a6ce-4981-95ff-119b4169faee-image.png) 

![3dc7373e-3cbc-4ec2-bc08-98e89d1d20d7-image.png](https://forum.modalai.com/assets/uploads/files/1684858439579-3dc7373e-3cbc-4ec2-bc08-98e89d1d20d7-image.png)

## Reply by tom (ModalAI staff) · 2023-05-23 19:54:07 UTC

@Raza-Rizvi That error message "voxl-mavlink-server does not appear to be running" isn't normal.  You may want to run through `voxl-configure-mpa` again, set your host IP in `voxl-vision-px4.conf`, then reboot your drone.