Using a homemade mechanical gyroscope, i created a gimbal to stabilize my GoPro camera.
In this first test, my gimbal has just one axis (pitch) so if i change the roll angle it will happen the gyro precession (it will not stabilize correctly). Precession is what happens when a spintop is desacelerating and doesn't stay in the vertical orientation anymore.
In the beginning of the video I didn't pay attention to this, but later on, I could move forward and backwards, and the results were interesting! Check it out
Next time i'll try with 2 axis to see what happens ;)

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  • It depends on the rpm of the system.

    This a pretty damn neet experiment, but I second the advice for coaxial, counterrotating setups.

    I actually used an old hard drive to do something similar awhile ago.....
  • Would a small 2.5" drive motor and disk have enough mass to balance a gopro ?

  • put a shirt on

  • Algum material sobre o assunto.

    Com o advento dos gimbal brushless o resto ficou obsoleto.

  • They use mechanical gyros to stabilize big camera rigs for movies...especially when they shoot from helicopters.  The expensive ones have the flywheel(s) spinning in a vacuum and usually take several minutes to spin up or down.  I think they spin them up above 22,000 RPM so they don't make audible noise. Like most film-related equipment, you can rent them.  Don't some of the ESCs for electric ducted fans drive brushless motors up to those kinds of speeds?

  • Thanks for the video Andrew, very nice to see it working

    PS: i don't know what's jock-clad

  • BTW as fascinating as this topic is, it is still somewhat disturbing to see your jock-clad wobbling form in your bathroom mirror, no matter how convenient it was to do it there...

  • Muhammad, if you use just 1 axis it will affect multirotor roll and it will occur precession in the gimbal

    Lefebvre, thanks for the tip ;) i've already read some people advicing to use counter rotating gyros, but i've never saw in action.

    I was thinking on puttin 2 gyros, side-by-side. Would that be ok or do i need them to be colinear (one on top of the other)?


    I can't figure out how to embed from Vimeo.  Sorry.

  • Bernardo, if you want to play with this, I'll give you a tip.  I never got around to it.

    Use two gyros with parallel shafts, running opposite direction to eachother.  Gyroscopic precession is gone!

    You can also control yaw by doing differential speed variation.  And you can even control the tilt by using a servo to rotate the two gyros axes.

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