# Can't connect to Qgroundcontrol **URL:** \ **Category:** QGroundControl\ **Created:** [May 26, 2022, 1:57pm UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206 "2022-05-26T13:57:30Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![ausdroid](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@ausdroid](https://discuss.bluerobotics.com/u/ausdroid)\ **Post date:** [May 26, 2022, 1:57pm UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/1 "2022-05-26T13:57:30Z")
So, I have a companion Pi connected to Pixhawk and am running fathom interface. I have installed the companion computer software. I have installed sub 4.03 on the Pixhawk. When I run the companion interface, I can see the Pi is connected to the Pixhawk. I can even reboot the Pixhawk via the companion computer interface. When I run QGC, I can’t get a connection. I have my PC set on 192.168.2.1 There appears to be no actual instructions on setting up the QGC connection - if there are, it would be great to get a link. I have created a connection in the COMMS tab at 192.168.2.2:14550 but it won’t connect. I did not see any instructions on setting the board rate between the Pi and the Pixhawk. What should it be? I assume the latest companion software and the latest SUB firmware would have the correct baud rates defaulted. That said, I assume that if I can reboot the Pixhawk from the Pi, they must be talking. Any help appreciated. ---
**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\ **Post date:** [May 26, 2022, 9:51pm UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/2 "2022-05-26T21:51:41Z")
Hi @ausdroid, If both the video and telemetry aren’t appearing then most likely you need to [allow QGC through your firewall](https://bluerobotics.com/learn/bluerov2-software-setup/#firewall) 🙂 If that doesn’t help, have you gone through [our troubleshooting steps](https://www.ardusub.com/reference/troubleshooting.html#no-telemetry--waiting-for-vehicle-connection-no-autopilot-connection)? If so, what were the outputs / results? > [@ausdroid](#): > > There appears to be no actual instructions on setting up the QGC connection - if there are, it would be great to get a link. QGC should connect automatically to UDP connections on port 14550 by default, but it needs to be allowed (through the firewall) to do so. ---
**Author:** ![ausdroid](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@ausdroid](https://discuss.bluerobotics.com/u/ausdroid)\ **Post date:** [May 27, 2022, 3:13am UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/3 "2022-05-27T03:13:25Z")
I can ping 192.168.2.2 from my laptop which is sitting on 192.168.2.1 I will make the changes to the firewall later today. Also, I was not able to see any wireless SSIDs on the companion computer browser page so had to manually install Sub through USB. Is the wireless activated by default on the companion computer software? If not, how do you turn it on? Thanks. ---
**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\ **Post date:** [May 27, 2022, 3:55am UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/4 "2022-05-27T03:55:28Z")
> [@ausdroid](#): > > Is the wireless activated by default on the companion computer software? If not, how do you turn it on? It should be enabled, yes. A few questions: 1. Was your Raspberry Pi inside something like a metal enclosure while you were trying to connect to wifi, or far away from your router? 2. Have you considered [BlueOS](https://discuss.bluerobotics.com/t/blueos-official-release/12024) (instead of Companion)? If you’ve decided against using it, 1. Which Companion version are you running? 2. How did you install it? ---
**Author:** ![ausdroid](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@ausdroid](https://discuss.bluerobotics.com/u/ausdroid)\ **Post date:** [May 28, 2022, 12:33am UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/5 "2022-05-28T00:33:44Z")
Hello Eliot. No. The Pi was not inside a Faraday cage. I installed what I assume was the latest version of companion by downloading the image and using Etcher to write the image to an SD card. I am happy to flash with BlueOS, particlularly if it can stream multiple cameras - I have three - forward USB, forward hi-def zoom IP camera and rear wide angled RPi camera. I have four enclosures. I would understand that QGC can only connect to one camera - the plan is to view the others on a seperate laptop. ---
**Author:** ![ausdroid](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@ausdroid](https://discuss.bluerobotics.com/u/ausdroid)\ **Post date:** [May 29, 2022, 2:37pm UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/6 "2022-05-29T14:37:20Z")
Hello again. So, I flashed an 8G micro SD card with BlueOS. The verification worked. I then loaded it into the pi, and no success. I can ping 192.168.2.2 But QGC does not pick up a connection. I have made the changes to Windows Firewall. When I attempt to open a browser at 192.168.2.2 it can’t connect and I do not get any console. I’m beginning to question the Pi. ---
**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\ **Post date:** [May 30, 2022, 3:21am UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/7 "2022-05-30T03:21:19Z")
> [@ausdroid](#): > > No. The Pi was not inside a Faraday cage. Ok > [@ausdroid](#): > > I am happy to flash with BlueOS, particlularly if it can stream multiple cameras - I have three > … > I would understand that QGC can only connect to one camera - the plan is to view the others on a seperate laptop. That should work, assuming your cameras have H264 encoded streams, and your connection has sufficient bandwidth to stream all three simultaneously. > [@ausdroid](#): > > and rear wide angled RPi camera Note that in BlueOS > [@BlueOS official release](https://discuss.bluerobotics.com/t/blueos-official-release/12024/1): > > Raspberry Pi cameras [are] _not yet supported_ ([#991](https://github.com/bluerobotics/BlueOS-docker/issues/991)) > [@ausdroid](#): > > I can ping 192.168.2.2 > … > When I attempt to open a browser at 192.168.2.2 it can’t connect and I do not get any console. Generally if pinging works then the web interface also works (for both Companion and BlueOS), so that’s unusual. It’s perhaps worth noting that [the BlueOS interface](https://docs.bluerobotics.com/ardusub-zola/software/onboard/BlueOS-1.0/getting-started/) uses different pages and ports to [the Companion one](https://www.ardusub.com/reference/companion-web-ui.html) - default connection to the BlueOS interface should be at [http://192.168.2.2](http://192.168.2.2) or [http://blueos.local](http://blueos.local) (no extra port or page/route specifiers). Also, are you certain the IP you’ve set is for the connection to the vehicle? If you pull out the vehicle connection while looking at the available networks the one you’re after should change to showing as disconnected and/or should disappear. > [@ausdroid](#): > > I’m beginning to question the Pi. If it’s pinging back then it’s unlikely to be an issue with the onboard computer, although you can ssh in to check if you want. User is `pi`, and the default password is `companion` on Companion and `raspberry` on BlueOS. Are you able to try a different topside computer? Others have had [antivirus issues](https://discuss.bluerobotics.com/t/bluerov2-waiting-vehicle-connection-ardusub-site-error/8624/14), and occasionally just [unknown problems with a particular device](https://discuss.bluerobotics.com/t/q-ground-control-app-installed-fine-and-opened-but-cant-find-it-in-control-panel-apps-to-allow-windows-defender-firewall-to-allow-it/7429/10). ---
**Author:** ![ausdroid](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@ausdroid](https://discuss.bluerobotics.com/u/ausdroid)\ **Post date:** [May 31, 2022, 2:26pm UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/8 "2022-05-31T14:26:36Z")
Thanks for your help. This is ow solved - dodgy US connector between Pi and Pixhawk and bad partions on SD card on Pi. I now have next stage problems but will open a ew topic. ---
**Author:** ![Spinorose](https://avatars.discourse-cdn.com/v4/letter/s/53a042/32.png) [@Spinorose](https://discuss.bluerobotics.com/u/Spinorose)\ **Post date:** [September 12, 2023, 7:57am UTC](https://discuss.bluerobotics.com/t/cant-connect-to-qgroundcontrol/12206/9 "2023-09-12T07:57:18Z")
I am having the exact same problem how do know I have a bad partition