# Unstable flying quadcopter

**URL:** <https://discuss.px4.io/t/unstable-flying-quadcopter/32763>\
**Category:** PX4 Autopilot\
**Created:** [June 14, 2023, 3:47pm UTC](https://discuss.px4.io/t/unstable-flying-quadcopter/32763 "2023-06-14T15:47:29Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![alkobra1394](https://discuss.px4.io/user_avatar/discuss.px4.io/alkobra1394/32/13351_2.png) [@alkobra1394](https://discuss.px4.io/u/alkobra1394)\
**Post date:** [June 14, 2023, 3:47pm UTC](https://discuss.px4.io/t/unstable-flying-quadcopter/32763/1 "2023-06-14T15:47:29Z")

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I am a novice and not good at analysis.I hope someone can help me.Thanks.  
I have a problem of unstable flying quadcopter with PX4.

[https://logs.px4.io/plot\_app?log=63db6fd4-5f5a-482d-9c03-6f001a4a8277](https://logs.px4.io/plot_app?log=63db6fd4-5f5a-482d-9c03-6f001a4a8277)

EKF2\_IMU\_POS\_X=0  
EKF2\_IMU\_POS\_Y=0  
EKF2\_IMU\_POS\_Z=0

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**Author:** ![JulianOes](https://discuss.px4.io/user_avatar/discuss.px4.io/julianoes/32/30_2.png) [@JulianOes](https://discuss.px4.io/u/JulianOes)\
**Post date:** [June 16, 2023, 12:58am UTC](https://discuss.px4.io/t/unstable-flying-quadcopter/32763/2 "2023-06-16T00:58:51Z")

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It probably needs some tuning. I would try to carefully do a little hop close above ground in Stabilized mode first, before you use position or autonomous modes.

Also, read up on tuning here: [Multicopter PID Tuning Guide (Manual/Advanced) | PX4 User Guide](https://docs.px4.io/v1.13/en/config_mc/pid_tuning_guide_multicopter.html)

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<div class="post-metadata">

**Author:** ![alkobra1394](https://discuss.px4.io/user_avatar/discuss.px4.io/alkobra1394/32/13351_2.png) [@alkobra1394](https://discuss.px4.io/u/alkobra1394)\
**Post date:** [June 16, 2023, 4:44pm UTC](https://discuss.px4.io/t/unstable-flying-quadcopter/32763/3 "2023-06-16T16:44:07Z")

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Thank you, I will try 🌹