Welcome to PhantomPilots.com

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

RTH Feature

Discussion in 'Pro/Adv Discussion' started by Andrew Marshall, May 20, 2015.

  1. Andrew Marshall

    Joined:
    May 16, 2015
    Messages:
    27
    Likes Received:
    4
    Can anyone help? The RTH feature on the P3 does not have the same behaviour as the P2 or am I missing something? Let me explain, if the RTH feature is initialised via the Pilot App or From the RC it works as expected, goes to predefined altitude and comes home, however upon doing some tests it does not follow this procedure. I have done two tests, first test was power down the RC mid flight. Instead of the bird flying to predefined altitude it came back at the same altitude it was flying at the time the RC was powered down, this could be a problem if your fly low and the RC goes down? The second test was running the battery down to 20%, RTH engaged but didn't go to predefined altitude before coming home. Are there any parameters to change this, or is this the functionality of the new P3?
     
  2. djfxprogressive

    Joined:
    Sep 16, 2014
    Messages:
    24
    Likes Received:
    4
    Hi Andrew, the RTH height can be set in the Pilot app. What was your altitude when you initiated RTH during each test? And what is your current RTH altitude set to in the app?
     
  3. rigor

    Joined:
    Apr 20, 2015
    Messages:
    79
    Likes Received:
    12
    Location:
    guisborough england
    i think you have to reset the altitude every time you fly as mine resets to zero height every time i start the app. i havent tested to see if it works incase i crash it :)
     
  4. djfxprogressive

    Joined:
    Sep 16, 2014
    Messages:
    24
    Likes Received:
    4
    Also, the default critical battery level is set at 20%. Once this threshold is hit, the Phantom will immediately land where it is (not RTH), although the user still has control to guide it to a safe landing spot.

    What happened when the battery hit the warning level (I believe default is 35%)?
     
  5. dmcgrew

    Joined:
    Apr 13, 2015
    Messages:
    173
    Likes Received:
    65
    I thought the last value you input into the app was actually saved on the Phantom, not in the app. I thought I heard the app was just displaying the wrong/no value mistakenly.
     
  6. Andrew Marshall

    Joined:
    May 16, 2015
    Messages:
    27
    Likes Received:
    4
    **** that's concerning about the battery critical level! What happens if bird is over water
     
  7. rigor

    Joined:
    Apr 20, 2015
    Messages:
    79
    Likes Received:
    12
    Location:
    guisborough england
    i hope you are right about that it really worries me incase it flies back too low and crashes into something i keep hoping there will be an update soon
     
  8. djfxprogressive

    Joined:
    Sep 16, 2014
    Messages:
    24
    Likes Received:
    4
    Yea, you need to be careful with flying over water when the battery is getting critically low. However, you still have control to move it to shore. You can also keep the Phantom hovering if you throttle up, but keep in mind that it will only hover, not rise in altitude.
     
  9. Andrew Marshall

    Joined:
    May 16, 2015
    Messages:
    27
    Likes Received:
    4
    Going to do some more test later, only got got battery so 20 mins not long time for meaningful analysis. The question on the 35% battery level is interesting as it didn't engage RTH when it reached this threshold?
     
  10. djfxprogressive

    Joined:
    Sep 16, 2014
    Messages:
    24
    Likes Received:
    4
    That is interesting. Once it hits the Warning threshold, you should get a popup window in the Pilot app stating that it will go home in 10 seconds. You can cancel this action if you choose, but either way, you should've still seen the window. How far away was the Phantom?
     
  11. delirious

    Joined:
    May 4, 2015
    Messages:
    520
    Likes Received:
    143
    I think this is correct. Mine says zero but It does in fact go to the right upwards distance before returning. I've lost contact and viewed the video later at the contact lost portion. It did increase in elevation prior to returning. It was subtle, based upon what the altitude was, but I did see it.
     
  12. bbfpv

    Joined:
    Feb 3, 2015
    Messages:
    3,744
    Likes Received:
    1,092
    Location:
    Long Island, NY
    The correct value is stored bird side, regardless of the app stating 0. Confirmed as well.
     
  13. F6Rider

    Joined:
    Feb 5, 2014
    Messages:
    1,126
    Likes Received:
    346
    Location:
    Foothills Of The Sierra's, California
    I tested this yesterday, first the RTH altitude is saved in the P3, the app will show zero until the P3 is turned on then it will change to your set height. I set my low battery warning from 30% to 25% and my critical from 20% to 15%, same as I had on the P2. As the battery bar graph tells you where the current level is and at what level you need to head back (this is dynamic) there should not be an issue, unless you just don't look at it. On low battery I got a warning to land or head back to home point due to low battery, after 10 seconds it heads back automatically, but you can cancel by pressing the RTH button.. When I got to critical battery the P3 just started to land from where it is and you only have limited control. The P3 will only climb to your set RTH altitude in the failsafe RTH mode, presumablyly to conserve battery power in the low battery situations. Makes sense as if you are at 30' with a critically low battery you don't want it climbing to 100' and wasting that power.
     
  14. Andrew Marshall

    Joined:
    May 16, 2015
    Messages:
    27
    Likes Received:
    4
    Try f6 rider, I done some testing and this is spot on what u say! I am more clear now so thanks for your feedback!
     
  15. rigor

    Joined:
    Apr 20, 2015
    Messages:
    79
    Likes Received:
    12
    Location:
    guisborough england
    thank you for your help everything is a lot clearer now