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P3A not stable and warming up issues

Discussion in 'Pro/Adv Discussion' started by Nejkoy, Feb 6, 2016.

  1. Nejkoy

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    Hello

    I have P3A for 4 days now. And I'm sure its not so stable as P3 standard which I had before. How to fix that is more stable? I did compass calibration, gimbal and IMU calibration. Also changed my props and aircraft has 14-18 satellites.

    And one more problem...when I turn it on I get message "aircraft warming up" and it takes about 1 minute or more. Is this normal?
     
  2. msinger

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    What does it do?

    You can decrease the warm-up time by calibrating the IMU when it's cold. Watch this video:

     
  3. Nejkoy

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    Its just not stable. It's not that it moves left or right 1 meter or more. It moves little left and then fast little right. Also at auto take off, it goes to 1.2m height and then descent half a meter down. One time I was at 10m up and suddenly descends for 5m. Dont know why?

    I will try IMU at evening when It will be colder.
     
  4. msinger

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    If VPS is enabled, you might gain some stability by disabling it. It does not work well outdoors in many scenarios.
     
  5. Nejkoy

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    Yes I know. VPS is disabled from my first day. Don't know what else can I do? Are there any values at sensors screen that should be in specified range?
     
  6. Sinisalo

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    I agree that you should try a cold IMU calibration but I just wanted to add that when I had the P3S it was much more stable than my P3P. I don't know why but it was.
     
  7. msinger

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    The compass mod should be very close to 1500. Try another IMU calibration. Make sure you use a level to ensure your surface is completely level.
     
  8. Nejkoy

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    Will do in the evening when cold outside. Really? Then something is true on that, maybe firmware problem or something. Maybe by default P3S more stable ;)

    Now It is 1428. Will try yes.