Collision Avoidance disabled during RTH

Strafe1 · Feb 1, 2017

OA is off once it reaches home point. Then upon descent, it turns off. Just as previously stated.

AwesoM · Feb 1, 2017

Ok guys... so it seems I may have been confused a little here. Yes when you press RTH it displays OA is disabled. I am assuming that "Enable Obstacle Avoidance" is disabled in Visual Navigation Settings which why I see this message? You don't want it flying sideways as it has no sensors. So the question I am asking is, when you press RTH does the forward Collision avoidance still function, and is there a certain speed or height when it is disengaged?

Heavysledz · Feb 1, 2017

If you are in P-Mode the FOV will remain active during the RTH until it has reached the home point and then begins to descend. I'm not sure if this holds true for Sport mode since I haven't used RTH in sport mode as of yet.

JLane · Feb 1, 2017

What exactly is the warning that you're getting? Is it telling you that it's switching off OA? Or is it letting you know that you have disabled OA? It definitely should not be switching off OA until it's ready to descend. As the manual states, it uses OA during RTH, and will ascend to clear obstacles.

AwesoM · Feb 1, 2017

JLane said:
What exactly is the warning that you're getting? Is it telling you that it's switching off OA? Or is it letting you know that you have disabled OA? It definitely should not be switching off OA until it's ready to descend. As the manual states, it uses OA during RTH, and will ascend to clear obstacles.

It says Obstacle Avoidance will be disabled in green at the top left of the screen when i click RTH. Isn't OA the function that has it fly left or right when there is an obstacle in front of it?

AwesoM · Feb 1, 2017

Peter Barnes said:
To AwesoM, have you checked that OA is enabled in the app?

Sent from my iPad using MavicPilots

OA is disabled under advance settings (OA to fly sideways correct?) Not to be confused with CA (collision avoidance) ?

JLane · Feb 1, 2017

AwesoM said:
OA is disabled under advance settings (OA to fly sideways correct?) Not to be confused with CA (collision avoidance) ?

I don't believe there's any place in the settings or in the manual that uses the phrase "Collision Avoidance." I can't see it anywhere.

OA is not limited to sideways flying, but I have a feeling where you may be getting confused. In the app settings there are a few settings that refer to "Obstacle Avoidance" and I'm not 100% sure which one you might be referring to.

The first "Enable Obstacle Avoidance" is the general setting for OA, which applies to all flight modes except for those that override that behavior.

The second one does refer specifically to horizontal movement, but that second option is actual a sub-item under "ActiveTrack," and that option only changes the Mavic's behavior while in Active Track mode. It's quite confusing, I know... Poor UI in my opinion. Here's a screenshot of the second option where you can see it's a sub-item of ActiveTrack. There's also a sub-item for TapFly: "Enable Horizontal Obstacle Avoidance," which sounds to me like it's exactly the same as the other option for ActiveTrack. Why they didn't use the same wording, I don't know...

On the Advanced Vision Settings page, there is a section "RTH Obatcle Avoidance" and the option to "Turn on Smart Return Home." Is yours enabled?

AwesoM · Feb 2, 2017

JLane said:
I don't believe there's any place in the settings or in the manual that uses the phrase "Collision Avoidance." I can't see it anywhere.

OA is not limited to sideways flying, but I have a feeling where you may be getting confused. In the app settings there are a few settings that refer to "Obstacle Avoidance" and I'm not 100% sure which one you might be referring to.

The first "Enable Obstacle Avoidance" is the general setting for OA, which applies to all flight modes except for those that override that behavior.

View attachment 5561

The second one does refer specifically to horizontal movement, but that second option is actual a sub-item under "ActiveTrack," and that option only changes the Mavic's behavior while in Active Track mode. It's quite confusing, I know... Poor UI in my opinion. Here's a screenshot of the second option where you can see it's a sub-item of ActiveTrack. There's also a sub-item for TapFly: "Enable Horizontal Obstacle Avoidance," which sounds to me like it's exactly the same as the other option for ActiveTrack. Why they didn't use the same wording, I don't know...

View attachment 5563

On the Advanced Vision Settings page, there is a section "RTH Obatcle Avoidance" and the option to "Turn on Smart Return Home." Is yours enabled?

View attachment 5564

Thanks for the pics... then I am at a total lost. The first pic you showed is Enabled Obstacle Avoidance and that is enabled. Like you said the 2nd one is for Active Track... that is the one I have disabled. These settings are what I have for my P4P when I had it still and everytime I hit RTH the controller (Ipad screen) would have a warning in green, top left that says obstacle avoidance is disabled. I will try fly it tomorrow and take a screen shot and post it.

tribar · Feb 2, 2017

ksull72487 said:
Intelligent Return to Home just means it takes a picture of the ground before take off

NO it does NOT BEFORE take off, it takes pictures when taking of vertical to a minimum height of 10 meters and hovering for a few seconds. Page 12 in the manual.

JLane · Feb 2, 2017

ksull72487 said:
Intelligent Return to Home just means it takes a picture of the ground before take off and will use its GPS to get back and anaylize the ground on landing to find the exact spot you took off from.

In addition to what @tribar says above, what you're describing is not Smart Return to Home. You're describing the Precision Landing feature. Smart RTH is specifically one of the 3 versions of RTH available: Failsafe RTH (eg. RC signal lost), Smart RTH (manually initiated), and Low Battery RTH. Page 13

Heavysledz · Feb 2, 2017

AwesoM said:
View attachment 5597 I am pressing the RTH button on the remote. See the photo. It always say that. If you click the "I" where the CA is it also says it is disabled?

OK, a bit off topic here but why are all of the structures in your screenshot highlighted in red???? I have never seen this before.

AwesoM · Feb 2, 2017

As you can see the warning on the left. and if you click on the "i" it tells you forward sensors are off too,

AwesoM · Feb 2, 2017

Heavysledz said:
OK, a bit off topic here but why are all of the structures in your screenshot highlighted in red???? I have never seen this before.

Peak focus threshold. When it is red it is in focus. Since you have to constantly focus this gives me an idea of when to refocus.

tribar · Feb 2, 2017

AwesoM said:
As you can see the warning on the left. and if you click on the "i" it tells you forward sensors are off too,View attachment 5600

Page 16 in the manual:
"Aircraft automatically descends and lands if RTH is triggered when the aircraft is within a 16 ft (5m) radius of the Home Point".
In your screenshot you're only 10 ft from the Home Point, so it wil land, and only during landing OA will be disabled. IT'S ON YOUR SCREEN IN GREEN !
Please read the manual, and read messages on your screen in total and not half.

And YES ! I still have your original attachment WITH telemetry.

AwesoM · Feb 2, 2017

tribar said:
Page 16 in the manual:
"Aircraft automatically descends and lands if RTH is triggered when the aircraft is within a 16 ft (5m) radius of the Home Point".
In your screenshot you're only 10 ft from the Home Point, so it wil land, and only during landing OA will be disabled. IT'S ON YOUR SCREEN IN GREEN !
Please read the manual, and read messages on your screen in total and not half.

And YES ! I still have your original attachment WITH telemetry.

@tribar I sense your frustration. There were other reasons why i removed the original attachment. I appreciate your time in trying to explain. If I understood the manual I would not have asked the question If we all understood what we read all the time this forum would be pointless.. I did a quick flight up and down just to get the warning in green to come up. I have had it go further than 10M of home point and still appear. So the question is what conditions does this apply to? Only during decent? The manual does not mention it... hence me asking the question.

Heavysledz · Feb 2, 2017

AwesoM said:
Peak focus threshold. When it is red it is in focus. Since you have to constantly focus this gives me an idea of when to refocus.

interesting...never thought of doing that as a visual aid.

JLane · Feb 2, 2017

As that screenshot shows, it disables the sensors during the Landing phase, which is basically what I said in my first reply, and a few others have said as well. It doesn't disable the sensors for the whole RTH, just for the landing.

AwesoM · Feb 2, 2017

JLane said:
As that screenshot shows, it disables the sensors during the Landing phase, which is basically what I said in my first reply, and a few others have said as well. It doesn't disable the sensors for the whole RTH, just for the landing.

Thank You.

Strafe1 · Feb 3, 2017

Finally! See posts #2,16,17,21,24 and 37. All saying the same thing.

AwesoM · Feb 3, 2017

Strafe1 said:
Finally! See posts #2,16,17,21,24 and 37. All saying the same thing.

@Strafe1 still getting use to the way this forum works. I read the email notification and respond from there. Not every message gets notified via email. I know your messages did not come through. So lesson learned is email notification does not send all messages and to scroll back further as newer messages may have been posted. Thank you for your response as i see now that you had said so previously.