Mechanical gyroscope to stabilize a GoPro camera (gimbal)

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 [...]