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HelicopterAerial Photography and Video › My DJI XP3.1 Autopilot Review
10-20-2009 03:32 AM  8 years agoPost 121
nooobsrrElite Veteran - web - My Posts: All  Forum  Topic

Thanks Eric. Yes there is ample time to do whatever you want. I placed the heli TX down and picked up the mount TX and started moving it around. Then picked up my camera and took a shot...

My buddy taking the video literally left it alone and drank his coffee...

By the way, George's PicLoc-TR was enabled and worked fine during the forward flights...

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10-20-2009 03:34 AM  8 years agoPost 122
nooobsrrElite Veteran - web - My Posts: All  Forum  Topic

For those interested...

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10-20-2009 03:40 AM  8 years agoPost 123
ErichF

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Sutton, NH

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Interesting chart...you can really see the collective work the system is doing to maintain that tight hover at altitude, especially at the 4 minute mark where it apparently saw a good puff of air. Thanks for posting.

Erich

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10-20-2009 04:30 AM  8 years agoPost 124
nooobs

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web

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Good eye Eric. I just took a look at the original video and compared it with the chart. If you watch the video again at 1:50 you'll see the heli "move" or got blown. The heli then fights back.

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10-20-2009 07:01 AM  8 years agoPost 125
daytonabeach

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Oslo, Norway

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By the way, George's PicLoc-TR was enabled and worked fine during the forward flights
Show us

Never argue with an idiot, he'll drag you down to his level and beat you with experience...

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10-20-2009 07:44 AM  8 years agoPost 126
nooobs

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...not in this thread...

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10-20-2009 09:58 AM  8 years agoPost 127
DKTek

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Melbourne, FL-USA

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What is the lead time when ordering one with all options? I will be back in the USofA soon but only for a short while. I'll order ahead of time if needed but would rather order for delivery on or about my return home.

Thanks Robert...

The beatings will continue until morale improves...

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10-20-2009 02:29 PM  8 years agoPost 128
rerazor

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Mich.

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What is the lead time when ordering one with all options? I will be back in the USofA soon but only for a short while. I'll order ahead of time if needed but would rather order for delivery on or about my return home.

Thanks Robert...
PM me the date and where you want it and it will be there.

Robert

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10-24-2009 08:02 PM  8 years agoPost 129
Disciple4123

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USA

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Use of DJI 1.2.2 and USB to serial software with Vista / Windows 7

I am a happy DJI customer, and ran an XP equipped laptop made in 2002 for my work. It died, so I tried DJI settings control on a Vista laptop I had. It doesn't recognize the port. I then bought a Windows 7 computer (needed to anyhow) and tried it, same result. Tried re-loading it using window's XP operation (designed to run older programs, etc.) still does not work.

Any ideas? I have an XP desktop I can run, but it's less convenient.

By the way, I've run DJI since April, and Rob and DJI have been great, my initial doubts about the system have been replaced with confidence

thanks,
Eric

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10-24-2009 08:45 PM  8 years agoPost 130
ErichF

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Sutton, NH

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Eric,

Can you try the Keyspan adapter? I've used these on Vista machines in the past.

Erich

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10-24-2009 09:06 PM  8 years agoPost 131
Disciple4123

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USA

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If all else fails, I figure DJI began to sell in numbers in 02-2009, and probably 70% of customers ran Vista then, so how do they get it to work? I'll hang on to that link though and try if if other resolutions fail to come up. Thanks.

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10-24-2009 09:09 PM  8 years agoPost 132
ErichF

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Sutton, NH

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Maybe the difference is 64-bit? I know the standard Win-7 is 64bit. I have read that many peripherals may not work when upgrading to Win 7 due to this. Have you tried a 32 bit version of Win 7?

Erich

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10-24-2009 10:08 PM  8 years agoPost 133
Disciple4123

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USA

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Well I tried it on Vista basic, 32 bit, wife's computer with the same results. I could see the 64 bit being an issue, but I think that was a bit ruled out on this round.

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10-25-2009 12:34 AM  8 years agoPost 134
SKY-FLIX

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Blythewood, SC

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No luck on my 32-bit Windows 7 either. I've had to stick with my XP netbook. Its more convenient to take to the site, anyway.

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10-25-2009 12:39 AM  8 years agoPost 135
chopper jockey

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uk

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I have been flying with the DJI too and it appears to be very good, except in the vertical speed department. It takes forever to climb to 300 feet and even longer to come back down. I have a few concerns about safety.
If I wish to descend quickly under DJI control, it will not allow it. So in the event of an engine failure or low battery,I have to first switch back to manual and then enter auto rotation. This is not good. I would much rather have the choice to descend in auto with DJI control so it comes back to the start position.(especially on a windy day!)

Has anybody here tried a full speed descent yet?
I'm getting a climb rate of 1 m/sec and descent rate of 0.8 m/sec.
wofully inadequate.

Apart from that I love it.

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10-25-2009 12:50 AM  8 years agoPost 136
ErichF

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Sutton, NH

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There are very few (none, that I know of) autopilots for unmanned aircraft that can handle an engine failure on a helicopter. However, it would be a nice feature to have a return home function in case of critical low battery. I know of a couple commercial UAV autopilots that have such a feature.

Erich

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10-25-2009 01:53 AM  8 years agoPost 137
nooobs

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web

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chopper jockey

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.
So in the event of an engine failure or low battery,I have to first switch back to manual and then enter auto rotation. This is not good. I would much rather have the choice to descend in auto with DJI control so it comes back to the start position.(especially on a windy day!)
How hard is it to switch back to MANUAL mode? It's a flick of a switch.

In the event of motor failure or low battery why would you want to be in AUTO mode? You'll be able to fly home faster in a low battery situation in manual mode than in AUTO. You'll be able to autorotate batter in manual as well.

If you can't fly on a windy day manually then you need more stick time. I'm not trying to be rude. If you're not comfortable flying on a windy day then get on the sim and add lots of wind and practice.

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10-25-2009 09:17 AM  8 years agoPost 138
Highviz

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Newbury, Berks, UK

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Noobs - It's great to be able to tap into your experience on these devices now. I'm getting seriously tempted to splash out on one now...

Am I right in thinking you can program your desired rate of ascent and descent (assuming it's within the design parameters)?
If you can't fly on a windy day manually then you need more stick time
- Click on chopper jockey's homepage

Malcolm

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10-25-2009 09:27 AM  8 years agoPost 139
nooobs

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web

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Am I right in thinking you can program your desired rate of ascent and descent (assuming it's within the design parameters)?
From what I've been able to play with... Yes.
I'll try to take a video of ascent and descent today at 24 lbs.

Profi/GPS doesn't limit your collective either while GPS is enabled.
Click on chopper jockey's homepage
I was referring to his comment on "especially on a windy day!"...

Flying fullscale is one thing... RC is another.

I've spoken to a B52 bomber pilot and admittedly said he had a difficult time flying RC planes. ...crashed and burned. Left the hobby.

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10-25-2009 12:12 PM  8 years agoPost 140
chopper jockey

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uk

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I was referring to his comment on "especially on a windy day!"...
I wasn't complaining about my ability. Been flying RC for over 25 years and AP for over 16, all over the world.

However imagine what you would have to do when hovering with dji at 500 feet in a confined space, say a building site in the middle of a city, or an oil rig surrounded by sea, or even at night when you can hardly see it, then having an engine failure? The first thing to happen (especially in the wind, when you can hardly hear the engine) is you see the blades slowing down, then you bottom the stick instinctively and have to switch off dji, fine, now you find the heli is falling with low rpm and possibly tumbling (with out dji control) drifting downwind beyond the safe perimeter of the site. It would be much quicker to be able to bottom the stick and come back down quickly to the same spot again without having to "stretch" the auto, if you know what I mean. My point is it should be up to me, the pilot to decide rather than the dji just not being capable of descending fast enough for autorotation!
Thanks for the advice, I will go back and double check the feedback tab and re calibrate.

Tell me, does the profi allow for autorotation under auto control?

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