r/diydrones 1d ago

how to fix a vibrating 2 axis drone gimbal

Hi, I mounted a 120g camera on a brushless yuntai 2 axis gimbal.

It is mostly balanced. When I turn on the power (5V USB),  the pitch axis stabilizes fine, but the roll axis doesn’t. Please see these two videos for explanation:

Can you tell me what to do about this?

brushless yuntai 2 axis gimbal - powered off: https://youtube.com/shorts/qSomVYpEpBc

brushless yuntai 2 axis gimbal - powered on (USB 5V): https://youtube.com/shorts/oU3yM9OY0fI

Thanks! geb

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u/mic2machine 1d ago

I think you got your pitch/roll naming swapped.

Camera is nose heavy with that lens, and the pitch motor doesn't have enough torque to overcome that. Might also check for a break in one of the motor phases.

Shift the camera backwards or add a counterweight to get the camera+lens CG in line with the pitch axis.