Pixhawk on a DJI S900

Spyros October 20, 2015 at 1:31am

Dear All,

I own a DJI S900 with a Pixhawk controlling it and have done some land surveying missions with great success!

I recently mounted a Gremsy H6 gimbal and test flew it. I had a lot of vibration especially in the landing gear where you could see it juggling like crazy!

Has anyone faced this problem before? Is it an auto tune issue?

I have also included a screenshot of the Basic Tuning page showing my values.

Thank you for your time

Spyros

Gaetanocosimo Massari October 1, 2015 at 6:21am

Please send us parameters snd pids for s1000

Jordan Kirby July 22, 2015 at 8:47am

FFinally got it all working, had a really simple issue...

Jordan Kirby July 14, 2015 at 9:39am

Hi all,

I'm in the middle of the pixhawk conversion on my S1000 and have my motors configured as such (as recommended in another post). Can someone please confirm this configuration? Just want to make sure that how I have it set up now is proper. Also I tested the system with the vehicle strapped to a workbench and noticed that once I bumped the throttle up 2 clicks on the ratchet, the motors were almost full throttle. Any ideas?

Thanks,

Jordan

I swapped the 2 red arms, be sure #1 = CW, the rest fall into place.

S1000 frame motor # ---> Pixhawk M out#

1 1

2 5

3 7

4 6

5 2

6 4

7 8

8 3

ALX May 3, 2015 at 5:08am

We did setup multiple DJI S900 (the originals, no clones) with Pixhawk and several gimbals, without problems.

The only thing we changed are the 12 bumpers under the battery/gimbal plate, to use more stronger ones.

Waladi > ALX May 5, 2015 at 7:35pm

Hi Geoffrey,

Any chance you could share the PID screeshoot page?

Thanks in advance.

Waladi
- ALX > Waladi May 10, 2015 at 9:37am
  
  Sure, I can, but it has no sense, your PID are depending of the weight of the machine, gimbal size, disposition,...
  
  Ensure that your machine is handling vibration correctly, and do an auto-tune, that's all you need

Mike Carswell January 30, 2015 at 5:07pm

Just took my DJI S1000+ with pixhawk for its first successful flight and shes a beauty. Did a bit of an auto-tune. Had the landing gear down and no camera/gimbal attached. Will have to re tune when this is all on but I hope this helps people for now.

I'd be interested to know what people have set for their THR_MIN setting after seeing the crash video above.

Cheers

Glenn M > Mike Carswell February 9, 2015 at 4:11pm

Also I'm interested in knowing how much slop you have in the landing gear when it's down. Mine has around 4mm of play in the axis it normally moves in, and I'm wondering how much this is contributing to the issues I'm having. Does yours have a similar amount of play, or is it solid when down?
- Mike Carswell > Glenn M February 13, 2015 at 3:03pm
  
  wow wel I wouldn't be surprised if that play in the landing gear is your problem. Mine has none, its firm when up and down. Theres a spring putting quite a bit of tension on, is yours a bit loose maybe? the mechanism for retraction together with the spring on mine is quite nice, sort of locks the gear in place untill the servo wants to move it.

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Pixhawk on a DJI S900

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