# Help sought with actuator jitter on 6-DOF motion-control camera

- Source: Reddit r/robotics
- Published: 2026-10-22T11:22:33.000Z
- RoboHot: https://robohot.news/en/items/lj7y8nhxxvax7ug91apluj94w
- Original: https://www.reddit.com/r/robotics/comments/1xcfvfv/actuator_jitter_help/

## Summary

A freelance filmmaker's DIY 6-DOF motion-control camera uses Robstride actuators running in MIT mode on an STM32, and now shows noticeable vibration and jitter when the J2/J3 joints move together under load. The author has tried implementing a cogging-torque compensation table and a gravity model but has not resolved the jitter; the arm is usable for stop-motion scenarios, but motion smoothness still falls short of requirements, and the author is asking the community for suggestions.