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HomeAircraftHelicopterAerial Photography and Video › Please I need help from other DJI autopilot users....
02-06-2010 11:20 PM  8 years agoPost 1
lele

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italy

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Hi guys
it is more than a month I am using my Dji and I am very happy with it
I have it installed on my Joker 3, but I am in trouble now since I moved to a heavier camera mount now my climb speed under auto mode is very very slow...unacceptably slow. In manual mode even if the mount is very heavy I can still climb very fast but I need to have the possibility to climb even with the auto pilot engaged.

Do you have any suggestions please? I could find no parameter in the software to change the climb speed..should I work on the pitch curves?

any input will be very appreciated!

Thanks
Lele

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02-06-2010 11:38 PM  8 years agoPost 2
sean911sc

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San Diego

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Have you contacted Robert at DJI? I'm sure he'll get you pointed in the right direction.

William S Harris

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02-07-2010 12:11 AM  8 years agoPost 3
Panomaniac

rrApprentice

Croatia - Adriatic coast

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Not that I have DJI, but interested in one, i have recently read nooobs solution about that:

"On the Servo and Feedback tab, monitor the pitch slider. Adjust your max pitch range using the slider. Increase your pitch until it's maxed out on the software. This should be about +13°.

Recalibrate.

Then check your pitch value again while in AUTO mode. Your max should be about +10°.

I had the same issue as my heli is 24lbs. It took forever to climb.

While recalibrating the pitch I also adjusted the last point on the throttle curve to 100%. After calibrating I brought it back down to a straight curve.

Now it climbs normally."

Hope it helps...

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02-07-2010 12:12 AM  8 years agoPost 4
chopper jockey

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uk

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lele, is the rate of decent very slow too?

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02-07-2010 01:16 AM  8 years agoPost 5
lele

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italy

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thanks guys
@ Sean: thanks I know Robert as a good and helpful guy, but I did
not get the Dji from him since I am in Europe I had to get mine from an european distributor, I got it from Joel of coptercam.ee, he is also a very good guy and I contacted him with this question and I am sure he will try to help me, I was also asking here since I would like to make some tests tomorrow and was hoping in some fast replies from other users.

@ Panomaniac: thanks alot! that is very interesting, I am now trying to figure out what Noobs means by "Adjust your max pitch range using the slider. in the servo feedback and calibration tab" maybe he is saying to
increase the pitch curve to get a +13° in normal mode and then recalibrate the pitch ch in the feedback tab having this way a +10° in automode?? I will try that, and may also pm Noobs if he does not jump in here...

@ chopper jockey: thanks, the descend is less critical since the added weight helps, it is on the climb that it takes forever to gain height

thanks
Lele

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02-07-2010 02:20 PM  8 years agoPost 6
rerazor

rrElite Veteran

Mich.

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Lele,

Feel free to contact me with any DJI questions. Not concerned what distributor you purchased it from.

You will have to re-calibrate your Pitch channel in the DJI software anytime you make changes to the Pitch range.

When you re-calibrate the pitch channel you want to have the Pitch and Throttle curves in the TX set to 100 (max) then change after calibration. The DJI needs to be able to see "what" is max.

You can adjust your Pitch range by the swash % in the DJI software or even mechanically if needed.

Robert

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02-09-2010 02:51 PM  8 years agoPost 7
lele

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italy

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Thanks Robert
Thanks Robert! I knew you are a good guy, I really appreciate!

In the mean time I also got the reply from my distributor Joel of coptercam.ee, actualy he is also a very good guy and I would absolutely suggest him for the european users, he replied my mail a few hours later on sunday giving me some very clear and strait forward instructions on what to do.

So at the end of the story the solution to have a good climb rate with the Dji and a heavy heli is very simple...just set your pitch curve to
have a +13° or +14° in normal mode. You may not succeed to get all that travel only with the curve in the radio, in that case you need to do it in the software increasing the pitch % value in the "swash type" tab (pag30 of the manual),
if you do that just check to have no binding at the low end of the curve
(negative pitch) in case just add some curve.

Important! after these changes just go in the "feedback and servo calibration" tab (pag.32 in the manual) and recalibrate the pitch channel.

I did that and even with a 25lb Joker (not maxi) I had a good climb rate even in autopilot mode.

Thanks to all!

Lele

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08-24-2010 10:43 AM  7 years agoPost 8
kurgan

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Croatia

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we're using DJI since a few days ago, this is how I found this thread. Had the same problem with the climb, hope that will be solved by solutions proposed here, but we have a simmilat problem with the tail. The tail is tooooooo slow on the response, at first we thought it is not working at all! Tried to increase the gain, but that did not solve the problem.
Other thing is that as soon as we swithc to Auto mode (on ground), the mainrotor starts spinning. I guess it goes into failsafe? There is no explanation how to set the failsafe to kill the engine (its not always safe to have the heli go to hoover by itself) ;-(

there can be only one

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08-24-2010 11:07 AM  7 years agoPost 9
kurgan

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Croatia

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me again, sorry for that:
The cyclic is responding to input in AUTO mode, and the heli keeps its position if I dont touch nothing, untill the tail goes. To correct the tail is taking forever..., We tried to increase the tail (yaw) gain, but with no real sucess. Could it be a compass calibration problem?
We are using the Spartan 760 gyro and JR8900 tail servo. The helicopter is a Maxi Joker 3DD with separate motor for the tailrotor, which we plug into AUX of DJI Adapter.

I would like some instructions on how to set the failsafe to NOT hoover the helicopter, but to kill the engine power. Since we often shoot around live people, its not always a good thing to have the heli apply throtle and try to hoover with no emotions if radio is lost...

there can be only one

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08-24-2010 02:09 PM  7 years agoPost 10
rerazor

rrElite Veteran

Mich.

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Tail piro speed is controlled via the control gain in the DJI software. Tail gyro gain is controlled via normal gyro setting, NOT with the DJI software.

I have no idea how on setting up with a DD tail.

If you do not want the heli to hover in fail safe then set fail safe throttle to zero (or whatever) in the fail safe for the TX/Rx.

Robert

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08-24-2010 02:46 PM  7 years agoPost 11
kurgan

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Croatia

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thanx re-razor on sharp answers!

there can be only one

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08-24-2010 06:12 PM  7 years agoPost 12
Sig Dawg

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Yorkton, Sask., Canada

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I was wondering if i should follow the same insturctions if i have a slow decent rate in auto. My climb rate in auto is great, but the decent is quite slow. Does the new firmware change the way the heli climbs and decends in auto mode as well as making the heli more responsive to stick inputs?

Thanks

Jason

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08-24-2010 06:43 PM  7 years agoPost 13
rerazor

rrElite Veteran

Mich.

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Climb rate or decent is determined on how you set your pitch curve and hover points in the TX and swash % in the DJI software and of course calibrating the pitch channel correctly.

Yes the new 40406 firmware makes the heli much more responsive to stick inputs. I like it a lot!!

Robert

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08-24-2010 07:16 PM  7 years agoPost 14
Sig Dawg

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Yorkton, Sask., Canada

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Thanks Robert,

I'll have to send our units back this winter for the firmware updates.

Jason

Jason

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08-26-2010 07:50 PM  7 years agoPost 15
kurgan

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Croatia

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please correct me If I am wrong, but
should't it be that the firmware can be uploaded to XP unit by the user? Isn't that the idea?
Do I have to send my unit for flashing to the manufacterer/supplier also? I did not see the new softawre announced on dji website

other thing is I am wandering should I use the heading hold or normal mode on the tail gyro, maybe that's creating my tail problem, how hard was it to write something in that sense in the manual???

there can be only one

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08-26-2010 08:42 PM  7 years agoPost 16
rerazor

rrElite Veteran

Mich.

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User can not update themselves with the XP 3.1 Standard.

Link to updates and notes

http://www.dji-innovations.com/en/product_update.html

Heading hold for your gyro.

Robert

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08-26-2010 08:59 PM  7 years agoPost 17
kurgan

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Croatia

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Robert,
your quick feedback is highly appreciated!
life is good
thanx

there can be only one

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