GPS_TYPE autopilot parameter

[Alex_UJI1 (Alejandro)]

Hello,

I am trying to build a remotely operated vessel that will include a GPS. I have been following advice on these posts:

BR2 Used as a surface vessel with GPS antenna

I am looking to use BR2 to run grid pattern on the surface while using the Ping Sonar to run a bottom survey. Wondering if I can use fly mode of QGround to view BR2 (GPS) postition with corresponding Ping Sonar data. Is it as simple as running external antenna from BR2 above water line? If I could simply view ROV position in Map View simultaneously with Ping Viewer data it would work for my immediate needs. Any input would be much appreciated.

Report on internally mounted GPS sensor

Bottom line up front: GPS works on ArduSub and BlueROV2, but it needs to be mounted on a mast and out of the water to work properly. After getting a proper tablet earlier in the week, I set about doing various ROV tests. One of these was to finally get the system wet. The results are below. Screenshot 8 shows the ROV out of the water with a good GPS lock. Screenshot 9 shows the ROV in the water, disarmed and on the surface. You can see how it looses lock and the GPS wanders according to inpu…

Very remotely controlled!

Hi all, Long shot here. Has anyone experimented, or had success with, a “remotely” controlled ROV, as in forwarding the connection to access over the internet for someone not on-site? Lag etc considered, full, fine scale control may not be necessary, but simple ahead/astern and camera view would be good.

Some of them use the recommended GPS by the Ardupilot website. However I was not able to purchase any of them, due to lack of stock or because they were discontinued. I got this one from RadioLink, but I do not know which value should I assign to the GPS_TYPE variable. I tried the uBlox option (variable value = 2) and it seems to be working (it shows the position in Qgroundcontrol) but I do not know if this is the best option. Is there any difference between these variables other than the name or a more detailed description of them ?

Also I would like to use the GPS data to position the vessel. I have read the GPS positioning section of Ardusub and I am a bit lost here, because I do not know how to forward the NMEA data from my GPS connected to the Pixhawk to the companion computer.

I also have a BU-353S4 USB GPS that someone also recommended but I have not tested it yet, so if anyone have any advice on how to use this as a GPS for a surface vehicle based in ArduSub I wil appreciate it.

Finally, is there a way to display the coordinates in the latest version of Qgroundcontrol? I just see the compass and the gyroscope, but no coordinates.

Thank you in advance

[williangalvani]

Hi @Alex_UJI1 ,

@Alex_UJI1

Is there any difference between these variables other than the name or a more detailed description of them ?

If the GPS works, it was correctly identified as a UBLOX and you should be fine.

@Alex_UJI1

I also have a BU-353S4 USB GPS that someone also recommended but I have not tested it yet, so if anyone have any advice on how to use this as a GPS for a surface vehicle based in ArduSub I wil appreciate it.

For positioning of the vehicle itself, out of the water. the M8N receiver in the SE100 is probably the best (easy/cheap/precise enough) option right now. The USB one could be used to show the position of the ground station if plugged to QGC, or even plugged to the companion, but I personally think the M8N is a lot cleaner to integrated.

@Alex_UJI1

Finally, is there a way to display the coordinates in the latest version of Qgroundcontrol? I just see the compass and the gyroscope, but no coordinates.

The telemetry widget has changed. you can now add multiple rows, columns, and even icons/color-coded conditions in there.

Here is how you get lat/lon in there: