The next expansion to my Timelapse shiel will be a cable version for two cables or pipes.
It will be based around skateboard bearings again, but this time it will be more flexible as it can slide on pipes and cables.
I used the same endless servo like in the robot dolly of the last post.
This is a closeup of one of the axles. As you can see i used a lot of shims to get the right distance.
In a perfect world i would only use the small pipes from inside a skateboard wheel, but i had only eight of them, so i used a ballbearing, huge shims etc.