Android Question DJI - Line of sight

[schimanski]

I sold my Parrot Bebop 2 and now I'm looking for a dji mavic pro to make some experiences with b4a and dji. If I understood right, the new dji sdk does no longer support hotspot function. I now ask me, if it is possible to set the line of sight by code. I mean the coordinates, where the camera has to orient hisself. We are using a fleet management with b4x and I want to set the cam of the drone to one of the server-coordinates.

Thanks for answer...

 

[DonManfred]

I mean the coordinates, where the camera has to orient hisself.

I guess the DJIWaypointMissionBuilder should be used to create a Waypointmission.

https://developer.dji.com/api-refer...tmission_djiwaypointmissionheadingmode_inline

AUTO is the default btw...

Thought i did not test it with the library. Just checked the documentation
Maybe an Update is needed to add the Headingmode to a Mission. I can´t find this Property in the Library source.

You can try to add

        public WaypointMissionHeadingMode getHeadingMode() {
            return getObject().getHeadingMode();
        }
        public void setHeadingMode(String heading) {
            getObject().headingMode(WaypointMissionHeadingMode.valueOf(heading));
        }

to the WaypointMissionOperatorWrapper.java inside the WaypointMissionBuilderWrapper class

But basically on Documentation it should be possible i think.

 

[schimanski]

Thanks, Don!

I'm not sure, if this is for what I'am looking for. What about the method

DJIHotpointMissionOperator

in your library? Seems that the hotpoint could be something like a point of interest...

 

[DonManfred]

The Hotpointmission is just one location and the drone fly around this location.
I think this is not what you are searching.

As written, you should use a Waypointmission and then you need to set the Heading for this Mission. You can set a POI also (not sure if it is per Waypoint in the Mision or if it is per Mission).

ETA: The POI is for the Mission.

 

[schimanski]

Jo, thanks...I will try to get a drone and test it...

 

[Erel]

You can set the heading mode with JavaObject:

Dim mode As String = ... 'one of the following values: AUTO, USING_INITIAL_DIRECTION,  CONTROL_BY_REMOTE_CONTROLLER,  USING_WAYPOINT_HEADING, TOWARD_POINT_OF_INTEREST
Dim jo As JavaObject = WaypointMissionBuilder
jo.runMethod("headingMode", Array(mode))

 

[schimanski]

Using a POI with the heading mode 'TOWARD_POINT_OF_INTEREST' could be the right thing. Thank you...

 

[DonManfred]

Using a POI with the heading mode 'TOWARD_POINT_OF_INTEREST' could be the right thing. Thank you...

The POI could probably set with JO too. But i dont know how to do it with JO.

 

[KMatle]

Out of topic but I'm wondering how you test that without loosing the drone

 

[schimanski]

I call back, if i got a mavic pro. I'm usualy willing to take risks...

 

[Erel]

ut of topic but I'm wondering how you test that without loosing the drone

There is a built-in simulator in DJI SDK (requires a real drone).