Robotic arm plays a great role in assisting the human hand in current life. This project involves the design and implementation of two degrees of freedom (DOF’s) assistant arm robot for aiding humans in the medical recovery for the upper left limb motion. The contribution in this work involves three parts: the first one, design special interfacing circuits based on (Arduino card) for controlling the designed arm motion, where the motion execution and record is done by designed reading and writing circuits, these circuits controlled by a designed MATLAB fuzzy proportional derivative (PD) controller, this control structure implemented by assisting of special Arduino Simulink library In MATLAB Simulink, where it will be used for control the signals transition, a new Simulink design proposed and investigated to interfacing the controller with the arm motors and encoders via the circuits. The second contribution is adding an assisting spring system to the arm first motor joint, where this addition rises the motion stability through the control phase by increasing the required torque in the arm first joint, especially after the human hand load is attached to the robot links, where its tested effectively without needing for replacing the motor with increased torque. The results illustrate the power of these circuits design and the error reduction occurred after supporting the system’s spring. The Third contribution, An Internet of robotic thing (IoRT) model is designed, and then the robot arm is connected using our designed internet –based control system using IoT protocols for communication.