RTH..Strange happining!

[Firestat]

Hello, all.

Before I had the Spark fully operational, I decided that I would hit the fly button on the app. (brave move for not knowing what I was doing). The aircraft was sitting on a four foot table out on the deck. Instead of going up 4 feet, as I understand it would do from the ground, it went up 8 feet, out of reach for me. Man, I was in trouble.

Now here is the strange part. I closed my eyes and hit the RTH button on the app. I thought that it would go up 20 or 30 meters, which would have been a disaster as there were trees just off the deck. Instead, it landed from flight without going up.
Is that normal? I was glad it came right down.

Firestat

 

[meik]

Could it be one of the case in this link?
https://forum.dji.com/thread-38269-1-1.html

It is for Phantom but I don't think DJI is using a different algorithm for Spark.

 

[Firestat]

Could it be one of the case in this link?
https://forum.dji.com/thread-38269-1-1.html

It is for Phantom but I don't think DJI is using a different algorithm for Spark.

Hey, thanks for that information. I need to study that. Got to think it is one of those situations.

Thanks
Firestat

 

[msinger]

I closed my eyes and hit the RTH button on the app. I thought that it would go up 20 or 30 meters, which would have been a disaster as there were trees just off the deck. Instead, it landed from flight without going up.
Is that normal?

It's normal if the Spark was within 65 feet of the home point.

 

[Fantomas]

Here's the real deal for the Spark:

RTH Triggered
-------------------

< 3m -> Land

> 3m but < 20m with "RTH at Current Altitude" option:
- Disabled(default) -> Land
- Enabled -> Raise at 2.5m (if needed), then RTH

> 20m
Height < Failsafe Altitude -> Raise at Failsafe Altitude then RTH
Height > Failsafe Altitude -> RTH

Careful if > 100m, Obstacle Avoidance is disabled.

That should make things a little clearer

 

[SneakinUpOnU]

A user manual is a terrible thing to waste