Gimbal not rotating to -90 at first image capture

[nW70M1]

When executing a DJI Mapper mission the first image captured at waypoint 1 is not taken with the gimbal rotation at -90, all following images are taken at -90. The gimbal rotation to -90 does not happen until after the first image is taken so the first image of each flight is not suitable for use in mapping.

[YarosMallorca]

Thanks for the report @nW70M1. Could you please specify which drone and which flight software (DJI Fly or Litchi) are you using?

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This might be due to specifics of the DJI Fly software that I haven't tested yet. They're updating it constantly. Will look for a fix.

[nW70M1]

I'm using a Mini 4 Pro with the RC 2 controller, so DJI Fly only available to me.

I can supply a couple of *.wpml files if you want to see what the difference is between one that starts with the gimbal at -90 and the DJI Mapper created one that does this after the first image is taken.

[YarosMallorca]

Sure, that would be good. Thanks!

[nW70M1]

Attached a couple of *.wpml files for comparison.

waylines.zip

[YarosMallorca]

Interesting... @nW70M1 I don't really understand what DJI does by setting

<wpml:action>
  <wpml:actionId>1</wpml:actionId>
  <wpml:actionActuatorFunc>###ACTION###</wpml:actionActuatorFunc>
  <wpml:actionActuatorFuncParam>
  <wpml:payloadPositionIndex>0</wpml:payloadPositionIndex>
  </wpml:actionActuatorFuncParam>
</wpml:action>

Will have to look into this in the future. It's hard to fix bugs like these because it requires test flights, and I don't have much time currently.

Just wondering, it fix the issue if you manually set the gimbal tilt with the wheel before starting the mission? Or the drone resets that when starting the mission to 0?

[nW70M1]

I will try to manually rotate the gimbal to -90 after takeoff before arriving at the first waypoint and see if that stays set for the first image. I will let you know.

The other .wpml file is not from DJI, I generated that mission with different software.

[nW70M1]

Rotating the gimbal to -90 manually before arriving at the first waypoint will work around this issue.

[jasonrmh]

I remember a similar issue with standard missions in litchi (not planned in DJI Mapper). The work around was to set an extra waypoint to tilt gimbal down before the actual main starting waypoint.

[YarosMallorca]

I'll have to look on how https://www.waypointmap.com/ works around this,

[nW70M1]

Waypointmap is the source of the other .wpml file I attached above.

[SummerRainCity]

Waypointmap 是我上面附加的另一个 .wpml 文件的来源。

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