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If you lose signal in Atti mode..
905 14 10-1 19:38
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AntDX316
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Does it RTH back easy?
10-1 19:38
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Mark Guille
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Yes (so long as it doesn't hit anything or run out of battery)/

10-2 07:59
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AntDX316
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Mark Guille Posted at 10-2 07:59
Yes (so long as it doesn't hit anything or run out of battery)/

Does it stop in mid-air and switch to GPS hold or does it continue to drift w/ the wind until the RTH command is fully executed?

Say you are below obstacles flying fast in Atti, you lose signal, with no 360-degree OA it can drift into the obstacles during high-winds.

10-2 09:12
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DJI Tony
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Hi, thanks for the inquiry. You may refer to the screenshots below for further details with regard to the Failsafe RTH. Hope that this would clarify your query. Thank you for your support.



10-2 13:46
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AntDX316
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DJI Tony Posted at 10-2 13:46
Hi, thanks for the inquiry. You may refer to the screenshots below for further details with regard to the Failsafe RTH. Hope that this would clarify your query. Thank you for your support.

[view_image]

So if you are holding the ascend stick up, it will cancel RTH if the connection signal is weak?
10-2 13:52
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Matthew Dobrski
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AntDX316 Posted at 10-2 13:52
So if you are holding the ascend stick up, it will cancel RTH if the connection signal is weak?

No, it will not cancel RTH because the connection signal is weak or lost entirely ...
10-2 14:03
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AntDX316
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Matthew Dobrski Posted at 10-2 14:03
No, it will not cancel RTH because the connection signal is weak or lost entirely ...

But it will still continue to drift when the connection is lost or does it auto switch to GPS hold?
10-2 14:21
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Matthew Dobrski
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AntDX316 Posted at 10-2 14:21
But it will still continue to drift when the connection is lost or does it auto switch to GPS hold?

Yes, the drone will continue to drift with a momentum and in direction of Atti Mode flight established before the connection was lost, or with the wind. A certain amount of time must be allowed for the drone to make decision and execute RTH procedure. Chances are it will collide with an obstacle in nearest proximity, if that's the scenario.
10-2 14:36
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JJB*
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Matthew Dobrski Posted at 10-2 14:36
Yes, the drone will continue to drift with a momentum and in direction of Atti Mode flight established before the connection was lost, or with the wind. A certain amount of time must be allowed for the drone to make decision and execute RTH procedure. Chances are it will collide with an obstacle in nearest proximity, if that's the scenario.

AFAIK a DJI drone will not perform a RTH in ATTI mode after loosing connection.

If ATTI is ATTI beacuse of bad GPS signal, it stays in ATTI as long as the GPS signal is bad (with or without connected to the RC)
If ATII is ATTI beacuse of an error (Yay,Speed, Compass,IMU) than the software disables the use of the GPS signals, no RTH possible.

This is for the Spark, MA and M2. Guess its the same for the Inspire.

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JJB
10-3 11:34
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Matthew Dobrski
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JJB* Posted at 10-3 11:34
AFAIK a DJI drone will not perform a RTH in ATTI mode after loosing connection.

If ATTI is ATTI beacuse of bad GPS signal, it stays in ATTI as long as the GPS signal is bad (with or without connected to the RC)

This is not the scenario OP is talking about. DJI manual doesn't say anything about restrictions of automatic RTH while connection is lost during intentional flight in Atti Mode. I'm not going to test this, but I can't see why the drone couldn't enter auto RTH, assuming the availability of GPS ...
10-3 17:01
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JJB*
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Matthew Dobrski Posted at 10-3 17:01
This is not the scenario OP is talking about. DJI manual doesn't say anything about restrictions of automatic RTH while connection is lost during intentional flight in Atti Mode. I'm not going to test this, but I can't see why the drone couldn't enter auto RTH, assuming the availability of GPS ...

If during a normal flight errors are popping up, the software will kill the use of GPS signals and drone will change mode into ATTI. If this is the case than a RTH is simply not possible as the software does not use the signals, and yes signals are logged (as seen in the LatLon position) but not used.
So RTH will not work.

If ATTI is becoming active due to the fact that GPS signals are bad (low count in satellites/bad  reception) no RTH possible.

If ATTI is manual selected and the connection is lost beween AC<>RC, seems logical that drone will switch back to a normal mode and perform a RTH. (not tested as i do not have a inspire)

cheers
JJB
10-3 23:41
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DJI Tony
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AntDX316 Posted at 10-2 13:52
So if you are holding the ascend stick up, it will cancel RTH if the connection signal is weak?

Hi, thanks for the prompt reply. Sorry that during the Failsafe RTH, the aircraft cannot be controlled as the remote controller is disconnected to the drone. However, if you have managed to regain the control, you could override the process. Hope that this would clarify your query. Thank you for your support.
10-4 13:08
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Matthew Dobrski
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DJI Tony Posted at 10-4 13:08
Hi, thanks for the prompt reply. Sorry that during the Failsafe RTH, the aircraft cannot be controlled as the remote controller is disconnected to the drone. However, if you have managed to regain the control, you could override the process. Hope that this would clarify your query. Thank you for your support.

This is not the scenario OP describes. Here we go again:

a) Home Point is recorded, solid GPS reception all the time, launch executed in standard P-Mode.

b) The drone is later intentionally switched to fly in Atti Mode.

c) At some point connection is lost permanently, the drone drifts further uncontrollably with a momentum or with a wind.

Q: Will the RTH procedure kick in automatically, assuming such setting in Go 4 app? This will require auto-switch back to P-Mode, right?
EDIT: It's confirmed by experienced pilots and DJI affiliates that the drone will execute auto RTH while all connection is lost, no matter what flight mode it was on. It will enter GPS controlled mode and attempt to come back.
10-4 14:19
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AntDX316
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Matthew Dobrski Posted at 10-4 14:19
This is not the scenario OP describes. Here we go again:

a) Home Point is recorded, solid GPS reception all the time, launch executed in standard P-Mode.

I just flew it today for the first time.  Works and feels like the Phantom.  In 20mph+ winds, it drifted super hard, basically faster than the Spark flies with OA on at full stick.
10-4 15:25
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DJI Tony
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Matthew Dobrski Posted at 10-4 14:19
This is not the scenario OP describes. Here we go again:

a) Home Point is recorded, solid GPS reception all the time, launch executed in standard P-Mode.

Hi, thanks for providing the information. Please refer to the details below.

GPS during RTH:

The aircraft uses the GPS for positioning during RTH trigged either manually or automatically. If the GPS signal is weak (the channel is not stable) or lost, the aircraft will not fly to the Home Point.
When the GPS signal becomes weak during RTH, the positioning will be inaccurate and the RTH route will be affected. If the GPS signal is lost and the aircraft stops flying to the Home Point, the Atti mode or vision mode will be enabled. If the aircraft does not receive other command, it will hover. When the battery level is critically low, it will land, even the GPS signal is strong.
10-8 13:42
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