Hi to every one
I have a question about the GPS/Compass (3DR). In general, when I open QGroundcontrol station and I go to mission plan, I can see that the GPS position is not accurate, it is jumping even several meters from the position of the Drone.
I am using Jetson TX2 and the GPS is quite close to it. I read that the USB3 port of the Jetson can cause disturbances in the GPS. Could be this the problem?
I have QGC-Station and fly-mission-plan, when i set up all the points and I load the mission, I get the error ‘Unable to start mission (‘vehicle not ready’)’.
In other words,
I have tried position control and the drone responded quite satisfactorily using the RC transmitter. However, when I want to try fly mission mode, I can see that the GPS position is jumping even though the QGC takes up till 9 satellites, and the GPS is locked and the HDOP < 1.5 and the VDOP < 1.5.
I can chose the way points and load the program but when I want to change to mission and arm I get the error: I get the error ‘Unable to start mission (‘vehicle not ready’)’.
Do you have a clue about this
Thank you and looking forward to your replay
Hey @acpl00 are you flying with PX4? do you have access to your logs?
Well I set the position flight mode over QgroundControl station, and the drone was flown with the RC-transmitter.
I do not know where those log files are located
First you have to determine which Autopilot are you running inside your flight controller, if you happen to be using PX4 then you can follow this guide https://docs.px4.io/en/getting_started/flight_reporting.html
Yea I think it is px4, I will read that link, and what shall expect to see concerning the GPS and the error I get?
Once you publish your logs follow the GPS Uncertainty and GPS Noise & Jamming sections.
I would also recommend posting a link here if you need assistance interpreting your logs.
First at all, thank you for your kindly help
Well, I read that USB3 is known to be an effective GPS jamming source. So, I have wrapped under the GPS and between the USB3 from Jetson TX2. And, amazingly The GPS status was as follows:
GPS Count 17
GPS lock 3D DGPS lock
Course over ground 219.4
However, when I set up or add way points in mission plan. I could successfully load the mission and when I wanted to start the mission I got the same error:
““Unable to start vehicle not ready”” Even though I tried few times just one log file is available.
I read that the log files only generates when the drone is armed and disarmed, right? well, in that case I armed and disarmed the drone once with the RC-controller.
But, the question is: How can get the log file if it does not allow me to arm and start the mission planer flight mode.
I have the link that has been generated by the flight review.
I share it here:
Also, after I loaded the first mission plan and failed. I set up new mission plan and then when I wanted to load the way points mission, I got the error: ““Mission write failed to send final ack.””
I am looking forward to your replay.