Low-cost robotic arms are usually driven by scripts that command each joint directly, which is adequate for a demonstration but rarely transfers to the next project and offers no protection against the arm moving through an obstacle or into itself. Robotics addresses this with two standard pieces of software: the first gives programs a common way to communicate with real or simulated motors and is called ROS 2 Control, while the second computes the joint angles needed to reach a position, checks the path for collisions, and plans a safe movement, and is called MoveIt 2. Taken together, they turn a one-off script into a reusable arm setup that transfers between simulation and hardware.