Easy inverse kinematics for robot arms

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/InverseKinematicArm 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 ... https://www.youtube.com/watch?v=Q-UeYEpwXXU