Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

lost my p2v+, bought another one but.....

Discussion in 'Phantom 2 Vision + Discussion' started by la_panza, Nov 28, 2014.

  1. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
    well, my beloved p2v+ ran into the bush on a mountain during a ground station flight, I was so stupid i did non remind I could stop it, so it it is still somwhere in a unaccessible forest.
    I went to buy another one the same day, the new one is a V3..
    Immediately I faced troubles i did not have before on the previous one..

    1: when i turn (yaw) it escapes away from its GPS position, while rotating it moves away some meters and then slowly returns to its original position when the rotation is over, i've tried with default gain paremeters as well as with some modified value, no luck, this is quite new to me..

    2: I'm using the upgraded remote controller i used with the dead one, and also the same range extender (RE700), now the DJI app on my Android Asus smartphone is randomly going out of the video page by itself and return to the basic page, the one with camera, album, setting and news.. it happens at a rate of 20-30 seconds during flight, it's very annoying and intimidating..

    any help? thanks
     
  2. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
    wow... did appreciate so much interest in this post, really helpful... thanks a lot :)
     
  3. Monte55

    Joined:
    Apr 26, 2014
    Messages:
    2,198
    Likes Received:
    517
    Location:
    Raymore Missouri
    Don't feel too bad. I have had many of my questions ignored or answered with irrelevant remarks.
     
  4. Fplvert

    Joined:
    May 28, 2014
    Messages:
    1,559
    Likes Received:
    708
    Location:
    Southern Idaho USA
    :D
    Hi la_panza,
    Why are you not using the transmitter that came with your new bird? Not sure that will matter, but it's worth a try.
    The drifting is usually an indication you need to do a compass calibration. If it's just the yaw that causes the drift that can also be a firmware issue. Are you using the latest updates?
     
  5. Skynet1

    Joined:
    Apr 20, 2014
    Messages:
    192
    Likes Received:
    12
    viewtopic.php?f=27&t=30771
     
  6. flyNfrank

    Joined:
    Feb 1, 2014
    Messages:
    4,212
    Likes Received:
    909
    Location:
    Indy, USA
    Skynew1's link is your hookup for the info.

    But I would like to add that adjusting the Gain settings would be a last resort to a fine tune. I'd say you are much better to put it back, and use the info from the mentioned link. If you calibrate the compass and it still displays a wondering box while hovering, calibrate it again. Also, if it performs the way you feel it should after calibrating, take notice of what is shown on the bottom of the monitor before powering the quad. I'm referring to the distance, altitude, and speed. Each time you do a successful calibration these numbers are usually close to the last successful time of calibration.
     
  7. Mori55

    Joined:
    Feb 13, 2014
    Messages:
    1,993
    Likes Received:
    6
    Location:
    NJ-USA
    I had a Asus hd memo tablet and had nothing but problems with it. I ended up returning it. My problems where the distance and height where way off , like 800'. Used my iPhone and ipad mini and never had any problems.
    I would do like others said redo everything in assistant and do a advanced imu calibration. Then ten do a GPS calibration.
     
  8. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
    well, c'est la vie Monte55, but I urged to know if this is a Drone issue, a Firmware / Software issue or just a configuration problem, just to decide if I had to send the bird back for an RMA...
     
  9. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
    Hello, just one week before loosing the old bird, i bought an upgraded RC (the latest one with camera tilt knob), accurately calibrated it with RC assistant, adjusted the position of the phone holder, it is exactly the same as the one that came with the new phantom, so i paired it with the new drone, made calibrations again in Phantopm assistant, why should i use the old one if they are twins ? The reason of the drifting must something else than the RC in my opinion...

    Moreover, I was in another town when I lost the P2V+, there are friends who promised they will keep searching the bush, so i left the other RC to them... I can't switch back to it even if i would :)
     
  10. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
    viewtopic.php?f=27&t=30771[/quote]


    thenks, I've read it, but unfortunately I was aware of al this tips, i've made advanced IMU calibration more than onece, and pay much attention to compass calibration, no luck so far.. during this week I did have not much time, hope to make more accurate tests tomorrow (sunday), also tweaking Gain values, as last resort...
     
  11. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
     
  12. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
    Can you please indicate where to find a more exhaustive explanation of what the various gains are for? the short description shown in the Assistant software looks a little confusing to me.... thanks
     
  13. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
    problems with the Asus seem to be vanished after the november 28 firmware update.... yow drift is still there though...

    what do you mean by a GPS calibration?
     
  14. steveeds

    Joined:
    Apr 24, 2014
    Messages:
    351
    Likes Received:
    74
    For the first 3 minutes both drift as yours does, then it comes right, I do not touch/be clever in any way, I don't update or anything that I would have input doing, I do just the standard startup as recommended and put up with the little things that always happen. A little prayer at the start must help but there's no way to prove this as the odd time I didn't nothing different happened on that day either.
     
  15. rbhamilton

    Joined:
    Aug 30, 2014
    Messages:
    539
    Likes Received:
    13
    Can't help much with your problems but you are going to want to get a GPS tracker on your new one before it goes wandering. I just had a GPS tracker save my ***. Best $60 I ever spent.

    This is the one I use (just 27g):

    http://www.ebay.com/itm/RF-V16-The-Smal ... 1033283911

    [​IMG]

    Most people spend the extra and buy a Flytrex. Much better option if you have a few more bucks.
     
  16. Meta4

    Meta4 Moderator
    Staff Member

    Joined:
    Jan 8, 2014
    Messages:
    7,708
    Likes Received:
    3,433
    He's confused.
    There is no way to calibrate GPS.

    The Phantom flies prefectly out of the box.
    There is no need to change gains.
    You should find out what is causing your problem rather than changing unrelated parameters and possibly causing other problems.
     
  17. la_panza

    Joined:
    Jul 13, 2014
    Messages:
    67
    Likes Received:
    4
    [quote="Meta4"
    There is no way to calibrate GPS.

    The Phantom flies prefectly out of the box.
    There is no need to change gains.
    You should find out what is causing your problem rather than changing unrelated parameters and possibly causing other problems.[/quote]

    You are surely right, as a matter of fact my previous one never needed to change the default value.. but... then?
    what can I do? what kind of tests should I make to identify this issue, more than calibrating RC, IMU and compass before every flight? Now the video behaviour on my Asus is excellent, no lost frame or page closing, video never "stutters" even from several hundred meters away... this magic was done by updating the central controller unit firmware on November 28.... Can I hope yaw trouble also to finish with a next firmware release? Or should I pray or start a shamanic "yaw dance"? :)
     
  18. Mopar Bob

    Joined:
    Oct 5, 2014
    Messages:
    219
    Likes Received:
    2
    Location:
    Connecticut, USA
    I have had this issue along with a few other people on this forum. I reported it to DJI support and they did nothing with it. With me, it seems to happen when I have Dynamic Home Link turned on, but I cannot be certain. I am using a Samsung Tab S 8.4. The email address of the support person is: Sophie.Zhang (DJI) <support@dji.com>. maybe if you send you issue to her she may understand that its not an isolated issue.
     
  19. PsychopathRC

    Joined:
    Oct 18, 2014
    Messages:
    270
    Likes Received:
    3
    Location:
    London, England
    I have an older P2V+. It's always drifted a little when yawing. Yawing is hard for quad's I'm told. The hardest thing they have to do in fact. If it's not a huge deal for you, don't sweat over it.
     
  20. Mori55

    Joined:
    Feb 13, 2014
    Messages:
    1,993
    Likes Received:
    6
    Location:
    NJ-USA
    Sorry i meant compass calibration . :oops: