This design is to give you higher pan ratio although less rotation of standart servos.
With 1.33 ratio of this design you will get 120 degree rotation from a 90 degree servo.

On the other hand, upper side of the mechanism is fit for any type of recording action cam. Just put the camera and tie with rubber band.

Front side is for live cam. Its also fit for any type of cam. There are rubber band hangs are available as well.

This design also prevents load on servos and gives better lifetime.

TEVO

Black Widow

No

Yes

0.25

25%