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Discussion in 'General Discussion' started by Turbazz, Feb 27, 2015.

  1. Turbazz

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    When dropping altitude, my control stick gets stuck at the bottom is this safe? Will it cut the motors
     
  2. Marlin009

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    That's a lock on the new controller. It's safe. I guess it's for descending from waaaay up.
     
  3. Turbazz

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    So when the Phantom lands and you hold it down it cuts the motors. How does it know you have landed and not dropping attitude
     
  4. aartsf

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    The bird knows that based on the altitude sensor.
     
  5. Turbazz

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    Has an attitude sensor??

    Why in groundstation it cannot work altitude out? Your home point is zero strange
     
  6. jumanoc

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    Pressure sensor = Barometer.
     
  7. PhantomFanatic

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    What do you mean by: "Your home point is zero strange?"
     
  8. barefootbeachcombing

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    Also, when the Phantom touches the ground it stops descending. If the throttle is in the fully down position when it stops descending for the required amount of time (3 seconds), it will shut the motors down.
     
  9. Turbazz

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    In the Ground Station app wherever you take off / home point It takes that ground level as zero.. basically the Phantom thinks it is flying on a flat ground. each waypoint from then on you have to adjust your altitude according to your home point.

    If that makes sense
     
  10. tcope

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    The Phantom does not turn off based on altitude... as mentioned it turns off once it sences that it's no longer decending. First, the altitude is always off. Just look at it when it's sitting on the ground. Second, you can catch the Phantom and press the down stick and the motors will cut off.
     
  11. dirkclod

    dirkclod Moderator
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    If ya don't like it like that just do this .viewtopic.php?f=24&t=34545
     
  12. Meta4

    Meta4 Moderator
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    1. It's not just in Groundstation
    2. The Phantom always takes it's homepoint as Zero altitude
    3. This makes perfect sense
    4. It gets it's altitude from a barometric altimeter which is much more accurate than GPS for altitude
    5. The Phantom has no idea of what sea level is, no idea of whether it's over flat ground, a mountain or a canyon
    6. It only knows the relative altitude of home point (zero) and calculates everything from there
    7. Anything else would be much too confusing for people flying Phantoms.