As I started working on the Turtle robotic arm design I was looking for any articles and tutorials how to efficiently build the arm joints. I needed them to be as simple as possible yet sturdy enough to withstand any unexpected loads that can occur for ex. when the user drives the rover into a wall. All I could find was an academic literature covering only industrial uses that are designed for a way too long life-expectancy at the cost of the bearing weight and complexity.
The hardest part of robotic arm design generally is not to allow for any play in any of the joints – to provide stiff and exact movement of the arm and its sensors. Is it even possible to manufacture such joints without any specialized machinery? I think so!
To improve the reading quality, the blog was moved to Medium.
See you there: https://medium.com/turtle-rover-blog