Hey guys!
I hope I'm right here, because I dont knwo in what category it fits better..
Well I have an M8N GPS that didnt worked out of the box with my pixhawk.
I got no GPS signal at all.
So I used a USB<=>Serail bridge and connected it directly to the computer.
I used u-center and tested it.
With NMEA I get rock solid 3D fixes at all baudrates (tested 38400-115200).
See here:
https://www.youtube.com/watch?v=VypfPqO1P1k
Now that I know that the module itself is working correctly, I tested the ubx protocol.
Sadly this is not stable at any baudrates and measurement periods.
See here:
https://www.youtube.com/watch?v=y2WIN1sDLnE
I then used Mission Planner 1.3.39 and the GPS module connected to pixhawk and get an 3D fix.
But its loses the fix at least one time in a minute.
See here at sec 18:
https://www.youtube.com/watch?v=6GfosbBjnAg
I then took a config file for the M8N that I found here: http://ardupilot.org/copter/docs/common-ublox-gps.html
As soon as I upload the config file via u-center I dont see any signals in u-center.
I read that this is normal.
The bad thing is, that it also loses the GPS signal in Mission Planner.
I took a look at the "Full Parameter List" in Mission Planner and saw, that I can change the GPS protocol to NMEA.
As this gave me stable and good signals in u-center, I configured the M8N again in u-center to the out protocol NMEA with a baudrate of 38400 at 5Hz measurements, Airborne 4g and EGNOS.
This gives me good signals in u-center, but no signals connected to the Pixhawk in Mission Planner.
So here are my questions:
1. As NMEA protocol is working stable, am I right to say that my M8N is working ok or is it broken/defective?
2. Is there a way to let Mission Planner/Pixhawk work with the NMEA protocol?
3. How can I get stable GPS/Glonass signals on my pixhawk with the ubx protocol?
I really did a lot of reading on many forums, guides and did a lot of try and error, but I cant get it working on my Pixhawk.
I hope you can help me.
Ah by the way:
4. On some configurations I tested, I get a gpsstatus 4 in Mission Planner.
What does this mean?
5. With "my" an the "ardupilot.org" ubx cofiguration, I get "3D fix". I also tested a different config file and get a "3D dgps". What does this mean?
Thanks a lot!
Hey guys!
I hope I'm right here, because I dont knwo in what category it fits better..
Well I have an M8N GPS that didnt worked out of the box with my pixhawk.
I got no GPS signal at all.
So I used a USB<=>Serail bridge and connected it directly to the computer.
I used u-center and tested it.
With NMEA I get rock solid 3D fixes at all baudrates (tested 38400-115200).
See here:
https://www.youtube.com/watch?v=VypfPqO1P1k
Now that I know that the module itself is working correctly, I tested the ubx protocol.
Sadly this is not stable at any baudrates and measurement periods.
See here:
https://www.youtube.com/watch?v=y2WIN1sDLnE
I then used Mission Planner 1.3.39 and the GPS module connected to pixhawk and get an 3D fix.
But its loses the fix at least one time in a minute.
See here at sec 18:
https://www.youtube.com/watch?v=6GfosbBjnAg
I then took a config file for the M8N that I found here: http://ardupilot.org/copter/docs/common-ublox-gps.html
As soon as I upload the config file via u-center I dont see any signals in u-center.
I read that this is normal.
The bad thing is, that it also loses the GPS signal in Mission Planner.
I took a look at the "Full Parameter List" in Mission Planner and saw, that I can change the GPS protocol to NMEA.
As this gave me stable and good signals in u-center, I configured the M8N again in u-center to the out protocol NMEA with a baudrate of 38400 at 5Hz measurements, Airborne 4g and EGNOS.
This gives me good signals in u-center, but no signals connected to the Pixhawk in Mission Planner.
So here are my questions:
1. As NMEA protocol is working stable, am I right to say that my M8N is working ok or is it broken/defective?
2. Is there a way to let Mission Planner/Pixhawk work with the NMEA protocol?
3. How can I get stable GPS/Glonass signals on my pixhawk with the ubx protocol?
I really did a lot of reading on many forums, guides and did a lot of try and error, but I cant get it working on my Pixhawk.
I hope you can help me.
Ah by the way:
4. On some configurations I tested, I get a gpsstatus 4 in Mission Planner.
What does this mean?
5. With "my" an the "ardupilot.org" ubx cofiguration, I get "3D fix". I also tested a different config file and get a "3D dgps". What does this mean?
Thanks a lot!