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I NEVER Calibrated my IMU

Discussion in 'Pro/Adv Discussion' started by spr0922, Jun 14, 2016.

  1. spr0922

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    ...And I've never had any problems in about 30 flights. Pictures are level, drone hovers just fine. Neither the user manual nor the quick start guide say anything at all about doing so, and the app has never prompted me to do it.

    Any reason why the community is so adamant on doing so every few months, including right when you get the drone? Why wouldn't DJI themselves suggest you do so (or at least provide instructions)? Am I risking serious problems if I'm flying without having done an IMU calibration?

    First post - though I know IMU calibration is frequently discussed, I'm not sure this particular topic has been brought up.
     
  2. dtviewer

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    I didn't calibrate mine and used it just fine for the first 2 weeks.
    This past week I went ahead and calibrated and have to say it seems to warm up and connects to GO App much faster now that its been done.
     
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  3. Tim in Florida

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    I am 6 months in. No IMU cal and no issues.
     
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  4. BVC

    BVC

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    Because some people think the phantom is a ticking time bomb and that all these small steps are needed for flight.

    Just go out and fly the **** thing!

    Sadly is the Internet and get a few guys to agree and repeat and the whole Internet will follow. Even if it is a waste of time
     
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  5. N017RW

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    Only one compass cal too!
     
  6. Great_Lakes

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    Flew mine right out of the box for a couple of weeks with no issues. The only time I calibrated my IMU is after I crashed and had to replace the camera and gimble.
     
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  7. RedHotPoker

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    It's wise to recalibrate everything after any firmware update, as some settings may get reset. Also before flying, manually go over and through all of your camera and Go app parameter preferences, as they may need to be reset. For me, it's Just a preflight checklist is all...
    Takes only moments, and gives you a confidence without doubt.

    If you want to enjoy the best experiences possible, keep your drone firmware updated, and be proactive when there are things that need your attention.
    This is supposed to be a fun and relaxing hobby. Not a nerve trying exasperation...

    I have already been reminded, that yesterday, after updating to the latest firmware, I neglected to perform my stone-cold-drone IMU and gimbal recalibration. So I am doing that, right now... ;-)


    RedHotPoker
     
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  8. maxwell smart

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    I never cal. and dont know how to update FW.
     
  9. Spartanator

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    I almost always have to calibrate the compass which fails quite often. I'll recalibrate the IMU next time just to see.
     
  10. spr0922

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    Can you briefly touch on which parameter preferences specifically you check before every flight? And what you're looking for? I'm set to do some flying this evening, but am going to do a quick IMU calibration beforehand.

    Thanks for your response.
     
  11. RedHotPoker

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    Makes me laugh, to think of being so lax, as some of you proclaim, publicly. Hahaha


    RedHotPoker
     
  12. N017RW

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    Many people do not upgrade f/w to avoid unwanted additions.
    This is a conscious behavior which is the opposite of 'lax' and see no shame publicly admitting so.
    If you are happy with the status quo there is no need to upgrade.

    Many people view constant updating and calibrating as "a nerve trying exasperation".

    TEHO
     
  13. Not A Speck Of Cereal

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    Wow. So your horizon has always been straight?

    Do you also see the numerous threads with people complaining about non-level horizons?

    Yes, some people calibrate their IMU when they don't have to, thinking it might solve an issue that is unrelated to the IMU. But there are frequent valid cases for doing so.
     
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  14. RedHotPoker

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    When doing an IMU calibration, I like to chill my drone down in the frost-free fridge for 15-20 minutes first. Or outside if it's cool enough.
    When the drone is cold, & just before you bring it out, have the Go app ready on the IMU calibration page, so when you replace the room temp., warm battery into the drone and turn it on, as soon as the camera stops moving, tap the IMU calibration tab.
    I always recalibrate the gimbal directly after this. A chilled IMU calibration has helped several here correct a crooked horizon, all but alleviates that warm up period when you first turn the drone on, and a couple other issues not coming to mind, as I never experienced any of the negative circumstances other pilots had.
    When you go through the camera settings, this is a great place to begin personalizing the parameters...

    Sure I can go through my own personal preferences, but perhaps a couple instructional videos would be better?
    I will share mine first.
    Under my Camera
    I use HDR or AEB "3"
    Image Size 16:9
    Image Format JPEG+ RAW
    White Balance Custom 5200K (depending on ambient light)
    Style None or Custom
    Color D-Log
    Auto or Manual, ISO and Shutter. Just depending...

    For my Video
    4K 4096x2160
    Video Format MOV or MP4 if you decide ;-)
    NTSC
    White Balance Custom 6000K
    Style None
    Color D-Log

    Histogram On
    Video Caption Off
    Over Exposure Warning On
    Grid None
    Center Point Circle
    Anti-Flicker 60Hz for N.America
    File Index Continuous

    Aircraft Battery
    Show Voltage on Main Screen On
    Time to Discharge 10 days

    Main Controller Settings
    MFM On
    Return-to-Home Altitude 75M
    Beginner Mode Off
    Set Max Flight Altitude 500M
    Enable Max Distance Off

    Remote Controler Signal Lost Return To Home
    Smart Return To Home On
    Enable Vision Positioning On
    Turn on Front LEDs On


    Advanced Settings here is the fun place to seek adventure...
    Sensors, here we look at MOD values.
    Right now sitting here, my values are such:
    Gyroscope Mod 0.01
    Acceleration 1.00
    Compass should be in & around 1400.00~1500.00
    Check IMU Calibration not required



    Hopefully these are some of the things we all can look at? ;-)
    As well, keep your flight battery packs charged before flights.

    And kind Sir, Always and all-ways, be pleasant to others when they step out of the bushes invariably to ask us "interesting" drone specific questions...

    Have fun, fly safe, happy landing...

    & Ahhhhh, big exhale... Ha

    Now "I" need to recharge.

    RedHotPoker
     
    #14 RedHotPoker, Jun 14, 2016
    Last edited: Jun 14, 2016
    spr0922 likes this.
  15. RedHotPoker

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    Additions are what It's all about now, or buy the Phantom 4. Hehe
    I paid $1700 Canucks and also needed a new iPad Air2 Cellular for my adventure, so to get the very most out of my investment, I will take anything I can get free from @dji and Apple Corp., and if that is a weekly or biweekly firmware update, so be it. Some companies charge for updated firmware... ;-)
    Eh, besides, I enjoy the DDDD DDDD DDDD!! Soothes my soul.
    I even play along with it, on my Yamaha Motif XF8. Hahaha
    And make movies of it all, on my Nikon D800!!
    Then jump on the SpYdr RS-S and haul azz to the www.ercha.ca RC heli flying field to test it all out..

    RedHotPoker
     
  16. Reed L

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    Ummm duhhh IMU? After 2 crashes the horizon is still straight... It's never needed an IMU cal, the P3A works great as is on 1.3.002 using the 1.6.4 batteries from my P3P. I only calibrate the compass when asked. Even though my P3P is on 1.6.4 is says it has the latest fw, no issues with either as seen in my last video from last Saturday, the last 3 minutes is flying, 4 batteries, both P3's -
     
  17. CafeRacer

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    Really? Do you even know what version you are running? Take the time and YouTube How to update Phantom (whatever model) firmware. Sometimes they add features and fix many bugs.


    Sent from my iPhone using PhantomPilots mobile app
     
  18. Not A Speck Of Cereal

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    Lucky you.
     
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  19. Meta4

    Meta4 Moderator
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    The compass doesn't fail at all.
    A compass error is your compass telling you that you are in an area where the earth's normal magnetic field is distorted by a lot of steel nearby.
    Most commonly this is reinforced concrete.
    If this is the cause, recalibrating is the wrong response.
    The correct solution is to move away from the steel causing the problem.
     
  20. Meta4

    Meta4 Moderator
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    Not so wise that DJI ever thought to recommend it - there's nothing about it in the manual or the DJI firmware update video you linked.
    It seems to be a forum myth that's crept in.
    Some users love to feel that they are doing things that make their flying better or safer.
    Some of the things they do don't make any difference but because forumers keep advocating, others feel they should as well.

    My belief (based on experience and observation) is that after updating, all you need to do is go back and check the settings that have reverted to default values.
     
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