Welcome to PhantomPilots.com

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

  1. t2adze

    Joined:
    Jan 3, 2016
    Messages:
    556
    Likes Received:
    39
    As i know, P4 has obstacle avoidance system which after it comes close to an obstacle stops, and in case of RTH it ascends and after avoidance is gone continues going forward/rth.

    Question is, what is the altitude limit in that case?

    A) whatever user has allowed in the app
    B) 120 meters
    C) 500 meters
    D) It doesn't ascend


    Sent from my SM-G900FD using PhantomPilots mobile app
     
  2. CThruU

    Joined:
    Jun 21, 2016
    Messages:
    103
    Likes Received:
    38
    Location:
    West Virginia

    You set the RTH altitude in the app. The entry is in meters regardless of measurement system selected. It won't go higher than this entry if it encounters an obstacle.
     
    t2adze likes this.
  3. CThruU

    Joined:
    Jun 21, 2016
    Messages:
    103
    Likes Received:
    38
    Location:
    West Virginia
    image.jpeg
     
    t2adze likes this.
  4. Hao Nguyen

    Joined:
    May 30, 2016
    Messages:
    45
    Likes Received:
    9
    Location:
    Vietnam
    I think it will climb.

    Dropbox - IMG_2442.PNG
     
    #4 Hao Nguyen, Jul 20, 2016
    Last edited: Jul 20, 2016
  5. makg

    Joined:
    Jul 20, 2016
    Messages:
    10
    Likes Received:
    3
    This is from the manual, hope it's what you're looking for.

    Aircraft can now sense and actively attempt to avoid obstale during FailSafe RTH, provided that the light condition is ideal for the Obstacle Sensing System. The details on how the aircraft will behave during obstacle avoid is listed below:
    1. Aircraft decelerates when an obstacle is sensed at 65 feet (20 meters) ahead.

    2. Aircraft stops and hover then start ascending vertically to avoid the obstacle. Eventually, the aircraft will stop climbing when it is at least 16 feet (5 meters) above the detected obstacle.

    3. Failsafe RTH procedure resume, the aircraft will continue ying to the Home Point at the current altitude.

    Only knew it was in there because I've been studying the manual at work in anticipation of my P4.
     
    LosDosMonitos, CThruU and t2adze like this.
  6. CThruU

    Joined:
    Jun 21, 2016
    Messages:
    103
    Likes Received:
    38
    Location:
    West Virginia
    Thanks. I should've re-read the manual before responding. So I'm guessing that it will ascend until max set height reached? If you set a really low max height or are flying towards a really tall obstacle, will it climb to max height and then hover?
     
  7. Lyverbe

    Joined:
    Jul 20, 2016
    Messages:
    12
    Likes Received:
    2
    Location:
    Montreal, Canada
    What if there's an obstacle above the drone? As far as I know, there are no sensors above the drone so it would hit while ascending while trying to RTH?
     
  8. t2adze

    Joined:
    Jan 3, 2016
    Messages:
    556
    Likes Received:
    39
    So can that 5 minute ascending be changed to any other number?

    Sent from my SM-G900FD using PhantomPilots mobile app
     
  9. blade strike

    Joined:
    Mar 17, 2014
    Messages:
    807
    Likes Received:
    462
    Location:
    Big Bear, CA
    it will ascend to avoid the object

     
  10. t2adze

    Joined:
    Jan 3, 2016
    Messages:
    556
    Likes Received:
    39
    Sorry i meant meters.

    Can 5 meters be adjusted?

    Sent from my SM-G900FD using PhantomPilots mobile app
     
  11. blade strike

    Joined:
    Mar 17, 2014
    Messages:
    807
    Likes Received:
    462
    Location:
    Big Bear, CA
    Sorry I don't understand the question?
     
  12. t2adze

    Joined:
    Jan 3, 2016
    Messages:
    556
    Likes Received:
    39
    They said it ascends 5 meters and then moves on. Can this value of 5 meters be changed?

    Sent from my SM-G900FD using PhantomPilots mobile app
     
  13. blade strike

    Joined:
    Mar 17, 2014
    Messages:
    807
    Likes Received:
    462
    Location:
    Big Bear, CA
    Oh sorry, no it can not.. It should stop and if it still doesn't have a clear view I do believe it will try another 5m.
     
  14. John Locke

    Joined:
    Jun 26, 2015
    Messages:
    2,908
    Likes Received:
    1,096
    Location:
    Yorba Linda, CA
    I wondering why you'd want to change that setting. Can you explain? Seems to me if it has clearance to return, all is good in most cases. After resuming forward flight during RTH, and it sees anything else in the way, it stops to ascend again, (IE: a gradual incline hill) enough to be 5M above the obstacle (this could be a 250' building) , and continues the RTH. This seems like it would work for all scenarios. Maybe an increase to 15M might help avoid antennas or wire stringers to brace antennas in suburban areas, things that OA can't see. Is that your thought?
     
  15. volace

    Joined:
    Mar 1, 2016
    Messages:
    101
    Likes Received:
    20
    P4 will climb in RTH mode to avoid obstacles , irrespectively of your RTH altitude you specify in the application , then it will cruise on this new higher altitude , unless it finds another obstacle in the new higher altitude , it would ascend further to avoid it , the only part which is unknown is what if the obstacle is higher than the maximum operating altitude of p4 which is 500 meter ?


    Sent from my iPhone using PhantomPilots mobile app
     
  16. volace

    Joined:
    Mar 1, 2016
    Messages:
    101
    Likes Received:
    20
    By the way if you fly night time you need to set your Rth altitude higher than any obstacle since obstacle avoidance would not work


    Sent from my iPhone using PhantomPilots mobile app