2 motors go stronger on first battery connection

I've got a strange issue with ardupirates NG,

 

when i first connect the battery today to the arducopter,

then trying to takeoff it pulls to a direction very strong, like if the front and left motors are running stronger without touching the stick !

i didn't takeoff with that situation,

 

i disconnected the battery, and reconnected after 3 seconds, then everything worked OK and the motors all took off vertically.

 

any possible explanation and way to solve this?

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • I think i got it - it maybe wasnt flat.

     

    i connected the copter to configurator and layed it a bit on te side,

    when increasing throttle i saw the down motor got higher throttle.

    when it was leveled, all motors got same throttle on the configurator...

     

    i'll know if it is solved next time i do a real flight....

  • Check your transmitter for trim drift.
    Mine (Turnigy 9X, but i've experienced it with JR/Graupner too) has a noticeable temperature-related drift on some of the channels.

    I.e. when the transmitter has just been started and is still "cold", i'll require one set of trim values to get things centered, while with it "warm" it requires completely different ones.
  • did you move arducopter while startup? maybe you corrupted the gyro calibration....
This reply was deleted.

Activity

DIY Robocars via Twitter
RT @gclue_akira: 柏の葉で走行させてるjetracerの中身 #instantNeRF #jetracer https://t.co/giVvuE4hP7
Jul 4
DIY Robocars via Twitter
Cool web-based self-driving simulator. Click save when the AI does the right thing https://github.com/pncsoares/self-driving-car
Jul 4
DIY Robocars via Twitter
RT @donkey_car: Human-scale Donkey Car! Hope this makes it to a @diyrobocars race https://www.youtube.com/watch?v=ZMaf031U8jg
Jun 25
DIY Robocars via Twitter
Jun 25
DIY Robocars via Twitter
Jun 16
DIY Robocars via Twitter
RT @GrantEMoe: I won my first @diyrobocars @donkey_car virtual race! Many thanks to @chr1sa @EllerbachMaxime @tawnkramer and everyone who m…
Jun 13
DIY Robocars via Twitter
RT @gclue_akira: JetRacerで自動走行したコースを、InstantNeRFで再構築。データセットは別々に収集 #jetracer #instantNeRT https://t.co/T8zjg3MFyO
Jun 13
DIY Robocars via Twitter
RT @SmallpixelCar: SPC 3.0 Now the motor also works. This car is doable. I just need to design a deck to mount my compute and sensors. http…
Jun 13
DIY Robocars via Twitter
RT @SmallpixelCar: My new car SPC 3.0. https://t.co/CKtkZOxeNQ
Jun 7
DIY Robocars via Twitter
RT @SmallpixelCar: High speed at @diyrobocars thanks @EdwardM26321707 for sharing the video https://t.co/o4317Y2U1S
Jun 7
DIY Robocars via Twitter
RT @SmallpixelCar: Today at @RAMS_RC_Club for @diyrobocars. Used @emlid RTK GPS and @adafruit @BoschGlobal IMU. Lap time 28s https://t.co/R…
May 28
DIY Robocars via Twitter
May 15
DIY Robocars via Twitter
May 14
DIY Robocars via Twitter
May 13
DIY Robocars via Twitter
RT @f1tenth: Say hi to our newest #F1TENTH creation for @ieee_ras_icra next week in Philly. It’s going to be huge! 😎 🔥 @AutowareFdn @PennEn…
May 13
DIY Robocars via Twitter
May 11
More…