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HelicopterAerial Photography and Video Docs  AceOne Owners UNITE!
04-11-2011 12:52 AM  6 years agoPost 101
Colin Guinn

rrApprentice

Austin, TX USA

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What pot are you using on the roll axis servo? Is it a 1 turn, three turn or what? As I described in an earlier post I have tried serval different pots and the Futaba pot worked the best, but the servo was still way too slow. The more turns the pot has the slower the pot is at moving off of center. Also what is the gear ratio on roll axis on that mount?
From Kim at PhotoHigher:

The pot on the roll axes is a 10 turn precision potentiometer and the gear ratio on your mount is approximately 7.8:1

That being said, I can tell you the roll axis is very fast when hooked straight into my Rx...

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04-11-2011 12:55 AM  6 years agoPost 102
webdr

rrApprentice

Atlanta GA

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Agreed Wayne, the new modes make for a very pitchy forward flight. I have experienced exactly what your saying. In forward flight, you have to keep the stick right at a certain position to maintain that speed. If you move the elevator stick ever so slightly either way, it will pitch forward harder or pitch back to slow down, ruining the shot. It really is alot more sensitive to stick controls in the latest firmware.

I remember before the last update, in AUTO mode, I could let go of the stick and it would gradually come to a stop with no excessive pitching. Im looking forward to the next firmware

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04-11-2011 01:27 AM  6 years agoPost 103
Wayne Mann

rrVeteran

United States of America

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Thanks for the info on your mount Colin. That ten turn pot makes the servo very slow to move off center with the Ace One. A one turn pot is much faster, but it too is still way to slow. Hopefull DJI can introduce an acceleration gain in conjunction with the normal gain or figure some way to fix the issue.

No problem Robert, I usually wouldn't dream of calling on a Sunday, but I was trying figure out how to slow down the cyclic response around center in Attitude Mode as it was really getting on my nerves.

Robert I have got to go out of town next weekend. Can I downgrade (upgrade ) the software to the previous version? I will not have time to test the new software prior to my departure assuming it gets here next week.

Wayne Mann

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04-11-2011 02:09 PM  6 years agoPost 104
Sidneyw

rrApprentice

Huntersville, NC

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If you move the elevator stick ever so slightly either way, it will pitch forward harder or pitch back to slow down, ruining the shot.
Would EXPO or D/R help?

I'm new here (in this section). I installed the Ace One for scale flying. Insofar, the installation was quite alright. I am trying it out using Swift16 in FBL. First flight was uneventful in manual mode. Better than my MB. Will try Att/Auto later.

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04-11-2011 02:13 PM  6 years agoPost 105
webdr

rrApprentice

Atlanta GA

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no, this is over expo and built into the firmware. I have expo pretty high with no change in its aggressive attitude movements. It can be lessened with lowering the HFG, but with that comes a reduction in holding capabilities. As its been said, the next firmware update will hopefully remedy it.
Matt

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04-11-2011 05:04 PM  6 years agoPost 106
Colin Guinn

rrApprentice

Austin, TX USA

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Can you tell me how far (in inches) your Ace One IMU is from the main shaft on the heli?
Vortex,

My IMU is 3.5 inches from the back side of the main shaft to the front of the IMU.

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04-12-2011 01:44 AM  6 years agoPost 107
Sidneyw

rrApprentice

Huntersville, NC

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. I have expo pretty high with no change in its aggressive attitude movements. It can be lessened with lowering the HFG, but with that comes a reduction in holding capabilities.
I'm using firmware 1.1.2; Software 2.0.14.69 from DJI download page.

My Expo is 20% and 70% D/R. HFG 250 both Ail/Elev.
Swash mix 50-50-25
or ~6° on cyclic and 10° on max collective pitch.

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04-12-2011 03:53 PM  6 years agoPost 108
Sidneyw

rrApprentice

Huntersville, NC

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Sorry for the delay regarding FBL FF tracking in auto mode. It is a matter of adjusting Left/Right gain in auto-pilot setup.

Watch at YouTube

As far as Ace One FBL capability; it does 3D quite well although it does not apply here. I picked one of the short videos we took for fun to show it could do the job. 3D is not my cup of tea.

Watch at YouTube

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04-12-2011 08:51 PM  6 years agoPost 109
BarryB

rrApprentice

UK + Asia

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SidneyW,

How come you have your location as the USA, but the videos are taken in China (where the DJI is made)

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04-12-2011 09:20 PM  6 years agoPost 110
UAVProducts

rrApprentice

Mchigan, USA

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Because he is over there working with DJI.

Robert
N.A. Dist for DJI
N.A. Dist. for PhotoHigher
Formerly DJIUSA

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04-12-2011 11:56 PM  6 years agoPost 111
Sidneyw

rrApprentice

Huntersville, NC

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SidneyW,

How come you have your location as the USA, but the videos are taken in China (where the DJI is made)
On top of what Robert said, I still have a house (paid for), two cars and one motorcycle in the U.S. After the 27" snow fall last Feb, I decided to get away for awhile.

Well, can't say I am working ... just having fun.

Watch at YouTube

Don't know when the auto take off will be released, but Ace one is used in the video.

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04-13-2011 02:07 AM  6 years agoPost 112
jhamlinjr

rrKey Veteran

Milledgeville, GA, United States

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...

HALO

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04-13-2011 05:58 AM  6 years agoPost 113
Vortex Aerial

rrVeteran

Riverside Ca

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Performed fail safe testing today as well as a couple long range out and back FPV flights.

Failsafe:
Does what it says it does (used return to home function) albeit the function is very jerky and a bit unnerving to watch for the first few times as after the initial 10 seconds expires once failsafe is entered and the heli initiates its climb to 30 meters, it does so quit abruptly (could strip main gear possibly). Once at 30 meters it jerks the heli towards home (my unit yawed the heli 180 to face its home destination un like others have reported, perhaps a firmware change caused this?). It flys way too slow to the home destination IMO, looks like around 5MPH at best. Would like to see 15-20 MPH.
A bit more fine tuning would work wonders, or perhaps some user menu functions. All in all though its damn impressive.

Long Range flights:

We did two 1/4 mile (475 yards) out and back FPV runs at around 40feet AGL at about 26-27MPH (default speed setting). Heli flew great.
But any change less than full forward cyclic made the heli bobble pretty good which is just horrifying to watch on the FPV monitor when the heli is so far off on the horizon that its just a dot in the sky.
If video was lost you would have to initiate failsafe and wait for it to come home, but at 5MPH it could very well crash from a dead motor battery on the way back. It really needs to fly faster.

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04-13-2011 06:11 AM  6 years agoPost 114
Sidneyw

rrApprentice

Huntersville, NC

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Will discuss your comments and update you. Doesn't seem difficult to fix, but will make sure before I make any promise.

Follow up -
Regarding return home speed, it is set to 6 meters per second or about 12 mph .... the speed will slow down when heli is within 50 meters range from 6 m/s to 1.5m/s.

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04-14-2011 03:16 AM  6 years agoPost 115
acbruno

rrNovice

Omaha, NE

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My Experience Today

I flew in 30mph winds today. I almost called it off but I just had to see how the DJI would perform so I went up anyway. I was surprised at how well it stayed in one spot. The camera was moving around and the heli was tilting a bunch against the wind but it held its position remarkably well. Because of the wind I decided to try landing in auto mode. This was my first time doing this. I landed smooth no problem however when I hit throttle hold nothing happened, the heli maintained power and headspeed sitting on the ground. I took a few seconds to think about it then clicked back into manual mode and was able to cut the throttle. I did not know auto mode overrides throttle hold. That should go in the manual somewhere.

I viewed the video on auto takeoff but what about auto landing? Isn’t taking off the easy part? Here’s my thoughts on the DJI so far:

PROS:
Does everything it says it can do – very impressively
Continuous software updates and improvements

CONS:
Heli flying skills are getting rusty
Instruction manual needs more information and explanation of settings
Pictures of installations on various helicopters would have been helpful
A video walkthrough of all the steps from installation to setup to flight tests would be really nice

Now that I don’t have to fly the heli anymore I can concentrate more on the camera mount which needs major help. I’m hoping DJI will come out with a three-axis solution soon but I can’t see it happening with a simple firmware update. I would think there needs to be some additional hardware for the camera mount.

That’s it for now.

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04-14-2011 03:48 AM  6 years agoPost 116
Sidneyw

rrApprentice

Huntersville, NC

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Auto and Att mode take the throttle, pitch and cyclic positions at the point of switching from manual mode. It is essentially how the controller knows to maintain throttle relative to rotor RPM, not withstanding Go-Home function hence throttle hold other than manual mode will not cut the engine or motor. Unless, it is switched back to manual mode.

You are correct; this should be in the manual.

Video walk thru is being worked on .... a few more days.
New manual is also being worked on.

Nice inputs.

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04-14-2011 07:11 AM  6 years agoPost 117
BarryB

rrApprentice

UK + Asia

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Because he is over there working with DJI.
Aahh - all becomes clear. Thanks for the information.

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04-14-2011 10:38 AM  6 years agoPost 118
Highviz

rrApprentice

Newbury, Berks, UK

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Auto and Att mode take the throttle, pitch and cyclic positions at the point of switching from manual mode
I don't believe this is the case. In my experience it takes the throttle position from the set 'centre' point. ie If you have two idle up settings it will revert to the preset centre value, even if you are running a higher idle up rpm before you switch to auto.
throttle hold other than manual mode will not cut the engine or motor. Unless, it is switched back to manual mode
I get round this by programming in a mix on my transmitter, (Futaba FF9), so that engaging throttle hold automatically switches the ace one back to manual. I think this is an important safety aid, as it instantly gives you full control back in the event of doing an emergency autorotate. It also has the benefit that you can leave the throttle hold on until the last seconds before take off. - I have accidently knocked the auto switch while picking up the transmitter before, which would cause spool up when you least want it

For info I am still using 1.0.28 firmware with 2.0.11.67 software - I'm glad the DJI server was slow last time I logged on to update, as I certainly don't want the jerky speed changes being reported with the new control algorithm!

Malcolm

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04-14-2011 03:46 PM  6 years agoPost 119
Sidneyw

rrApprentice

Huntersville, NC

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On top of what Robert said, I still have a house (paid for), two cars and one motorcycle in the U.S. After the 27" snow fall last Feb, I decided to get away for awhile.

Well, can't say I am working ... just having fun.
I thought I made this clear as stated above.

I don't know the reason behind my registered location is in the US, and posting video from Shenzhen have any impact in answering some of the question in this thread "AceOne Owners Unite".

My grandparents were born in a town 25km north of Shenzhen. I have never lived in China. This is the first time I stay more than 15 days other then numerous business trips since 1988. At retirement age, I find nothing beats coming here for awhile enjoying the hobby with which I did not have the time before.

Ok, I really don't have to explain to anyone what I do. However, to clarify this, I will be doing a lot of flying in snow free Shenzhen for at least another year before I return to the U.S. If you are tired of Germany, come on over. You might like it too.

Let's get back to what this thread is all about ...... understanding how AceOne works .... the good, the bad and the ugly.

------------------------------------------------------------------

I was toying with two friends in putting AceOne in a scale fuselage 800 size. While we were busy testing .......

Auto landing was being tested not too far from us.

To clarify, I have no idea if the feature will be released.

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04-15-2011 04:07 AM  6 years agoPost 120
Sidneyw

rrApprentice

Huntersville, NC

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Quote
Auto and Att mode take the throttle, pitch and cyclic positions at the point of switching from manual mode

I don't believe this is the case. In my experience it takes the throttle position from the set 'centre' point. ie If you have two idle up settings it will revert to the preset centre value, even if you are running a higher idle up rpm before you switch to auto.

Quote
throttle hold other than manual mode will not cut the engine or motor. Unless, it is switched back to manual mode
I get round this by programming in a mix on my transmitter, (Futaba FF9), so that engaging throttle hold automatically switches the ace one back to manual. I think this is an important safety aid, as it instantly gives you full control back in the event of doing an emergency autorotate. It also has the benefit that you can leave the throttle hold on until the last seconds before take off. - I have accidently knocked the auto switch while picking up the transmitter before, which would cause spool up when you least want it
All good points and noted.
My bad on the first point ..... after speaking to chief pilot. Centering has to be done again with IDLE1 or IDLE2 set in position. we look into algorithm and update you. This is for electric application.

The second point is well done also. Again, will report back if other options are available, the lack of which your suggestion is viable of course.

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