# FPV servo acting weird

**URL:** <https://forum.theavr.org/t/fpv-servo-acting-weird/710>\
**Category:** Documentation Feedback\
**Created:** [October 31, 2023, 12:54am UTC](https://forum.theavr.org/t/fpv-servo-acting-weird/710 "2023-10-31T00:54:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![valcardenas](https://avatars.discourse-cdn.com/v4/letter/v/aca169/32.png) [@valcardenas](https://forum.theavr.org/u/valcardenas)\
**Post date:** [October 31, 2023, 12:54am UTC](https://forum.theavr.org/t/fpv-servo-acting-weird/710/1 "2023-10-31T00:54:11Z")

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When we test the servos on the gimbal that controls the fpv/thermal camera, the whole gimbal jerks to the upper left position and goes upside down when we move the joystick not even an inch. We have the servos plugged into the PCC, but it just does this, even when we try and switch the positions of the servo wires.

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**Author:** ![Tylr](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.theavr.org/tylr/32/310_2.png) [@Tylr](https://forum.theavr.org/u/Tylr)\
**Post date:** [November 1, 2023, 6:40am UTC](https://forum.theavr.org/t/fpv-servo-acting-weird/710/2 "2023-11-01T06:40:28Z")

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This is likely due to the gimbal not being calibrated.  
https://youtu.be/\_mtDJYaxGYs  
This video is shown in the documentation and is a bit hidden in the Gimbal Assembly section when IMO should be in the Gimbal Testing section.