How to make robot arms move in straight lines.
Easy inverse kinematics using high school level maths and an Arduino.

Cad and code are available at: https://github.com/roTechnic/InverseK...
Please let me know if you make this or use the techniques yourself.

These are the servos i used: https://amzn.to/3IdB9Cq
and these are the ball bearings: https://amzn.to/3KEA4W4