Mission always fizzles out first time (SITL)

PX4 Autopilot
1

I am using PX4 SITL in conjunction with AirSim, Unreal Engine, and QGroundControl.

The first time I upload and run my mission via the QGC start mission slider, the drone spins its propellers but then the mission finishes with the following output from PX4:

INFO [tone_alarm] notify positive
INFO [commander] Ready for takeoff!
INFO [commander] Armed by external command
INFO [tone_alarm] arming warning
INFO [navigator] Executing Mission
INFO [commander] Returning to launch
INFO [navigator] Mission finished, landed
INFO [navigator] RTL: start return at 1 m (1 m above destination)
INFO [commander] Disarmed by auto preflight disarming
INFO [tone_alarm] notify neutral
INFO [logger] closed logfile, bytes written: 9113819

Every time after the first time I try to start the mission it works fine.

Any help understanding what is going wrong would be greatly appreciated!

2

Can you share the mission plan file?

3

Yes! I apologize for my ignorance but the .plan file isn’t one of the supported files under the upload function. Is there another way I should be uploading it?

4

You can just add .txt to the end

5

{
“fileType”: “Plan”,
“geoFence”: {
“circles”: [
],
“polygons”: [
],
“version”: 2
},
“groundStation”: “QGroundControl”,
“mission”: {
“cruiseSpeed”: 15,
“firmwareType”: 12,
“globalPlanAltitudeMode”: 0,
“hoverSpeed”: 5,
“items”: [
{
“AMSLAltAboveTerrain”: null,
“Altitude”: 3.048,
“AltitudeMode”: 1,
“autoContinue”: true,
“command”: 22,
“doJumpId”: 1,
“frame”: 3,
“params”: [
0,
0,
0,
null,
42.2318098,
-83.72064,
3.048
],
“type”: “SimpleItem”
},
{
“AMSLAltAboveTerrain”: null,
“Altitude”: 3.048,
“AltitudeMode”: 1,
“autoContinue”: true,
“command”: 16,
“doJumpId”: 2,
“frame”: 3,
“params”: [
0,
0,
0,
null,
42.2320342,
-83.7206502,
3.048
],
“type”: “SimpleItem”
},
{
“AMSLAltAboveTerrain”: null,
“Altitude”: 3.048,
“AltitudeMode”: 1,
“autoContinue”: true,
“command”: 16,
“doJumpId”: 3,
“frame”: 3,
“params”: [
0,
0,
0,
null,
42.232037899999995,
-83.72013299999999,
3.048
],
“type”: “SimpleItem”
},
{
“AMSLAltAboveTerrain”: null,
“Altitude”: 3.048,
“AltitudeMode”: 1,
“autoContinue”: true,
“command”: 16,
“doJumpId”: 4,
“frame”: 3,
“params”: [
0,
0,
0,
null,
42.2317945,
-83.7201359,
3.048
],
“type”: “SimpleItem”
},
{
“autoContinue”: true,
“command”: 20,
“doJumpId”: 5,
“frame”: 2,
“params”: [
0,
0,
0,
0,
0,
0,
0
],
“type”: “SimpleItem”
}
],
“plannedHomePosition”: [
42.2318098,
-83.72064,
249
],
“vehicleType”: 2,
“version”: 2
},
“rallyPoints”: {
“points”: [
],
“version”: 2
},
“version”: 1
}

6

It’s not a valid plan file. Share the name.plan.txt

7

I get this every time when uploading a .txt file………..

Sorry, the file you are trying to upload is not authorized (authorized extensions: jpg, jpeg, png, gif, pdf, stl, dxf, dwg, 3ds, ppt, pptx).

8

Also how is it not valid? Its the text in the plan file I am using.

9

Just give it an extension it will accept :sweat_smile: I know it’s a txt file so I’ll just rename it! Not sure, maybe indentation? I copy/pasted it and it’s getting rejected when I try to upload it.

10

ADIParkingLotMission.pdf (3.1 KB)