Welcome to PhantomPilots.com

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

gps not as good

Discussion in 'Pro/Adv Discussion' started by vinnnocc, May 22, 2015.

  1. vinnnocc

    Joined:
    Apr 30, 2015
    Messages:
    184
    Likes Received:
    19
    Location:
    USA, CT
    well ive notice the past two days my bird wants to drift and rise and lower. more then normal when in gps mode with 14-18 satellites.

    all the other times i never had any problems. the gps was solid even on a windy day.

    anything i can do?

    i just did the new update. havent droped it or crashed. been flying in all my same spots
     
  2. kirk2579

    Joined:
    Jan 13, 2015
    Messages:
    1,334
    Likes Received:
    261
    Location:
    Girard. ohio
    after a firmware update a full IMU calibration and compass cal should be done.

    once that is done it may take a while while for gps to store data etc. for lack of better terms it sort of has to relearn some things


    good luck and have fun flying!
     
  3. Apparition

    Joined:
    Sep 30, 2014
    Messages:
    965
    Likes Received:
    324
    Location:
    USA
    First day out with my P3 and it asked me to do an IMU calibration in the field did it on my case and it was windy. Not as steady as I hoped.

    Today with the new firmware I made sure to calibrate inside on a level surface. Night and day difference, it was rock solid in the air after a good IMU calibration.
     
    loganboyd likes this.
  4. vinnnocc

    Joined:
    Apr 30, 2015
    Messages:
    184
    Likes Received:
    19
    Location:
    USA, CT
    see this started happening two days ago before the new update. up till today ive been running 1.1.8.

    if i go to show someone how steady it is. then it wants to move. like im lying.

    ill try a full calibration of everything.
     
  5. ianwood

    ianwood Taco Wrangler
    Staff Member

    Joined:
    Jan 7, 2014
    Messages:
    4,910
    Likes Received:
    1,789
    Location:
    Lost Angeles
    Recalibrate and try a different location. Note that rising and falling is based on the barometer. GPS is only for horizontal positioning.
     
  6. Greyfox51

    Joined:
    Aug 1, 2014
    Messages:
    176
    Likes Received:
    53
    Location:
    Scottish Highlands
    Exactly the same problem with me, following the last update, so you aren't alone.

    It seems as though a recal is in order.
     
  7. 4wd

    4wd

    Joined:
    Mar 31, 2014
    Messages:
    2,532
    Likes Received:
    421
    Location:
    North York Moors
    Best to do IMU and compass after any update in any case.
    Let it cool first as much as possible though.
     
  8. Greyfox51

    Joined:
    Aug 1, 2014
    Messages:
    176
    Likes Received:
    53
    Location:
    Scottish Highlands
    I checked the IMU status for recalibration and it told me it wasn't necessary, but I'm going to do it anyway. Typical. I need to recalibrate and it is probably going the be the warmest day of the year so far!
     
  9. vinnnocc

    Joined:
    Apr 30, 2015
    Messages:
    184
    Likes Received:
    19
    Location:
    USA, CT
    how would the barometer get outa wack?
     
  10. leekiya

    Joined:
    Aug 29, 2014
    Messages:
    1,098
    Likes Received:
    145
    Location:
    Lee. UK
    I lost gps lock this morning, still on 1.1.8 and the IMU is Bob on, never had this problem before but this morning I went to a different spot I have never flown with the P3, did compas, warmed up, 16 satellites, took of and got up about 8 Mtrs and the app said p Atti mode, I looked down to check I had not knocked the switch but I hadn't, I flew forward about 10 Mtrs and back came gps mode with 16 satellites. Very strange. Landed it then and ei test again tomorrow.