Paper deals with the design, fabrication and control of a Robotic Arm which can shadow the movement of a Human Arm by using low cost sensors. In this project, four potentiometers are used to control the motion of the arm while one is used to controls the orientation of the wrist and one more is used for controlling the gripper to form a 4 Degree of Freedom(DOF) Robotic Arm. Servo Motors and electric motor with lead screw (linear actuator) are used as actuators for building the Robotic arm. The software part of the system is burned on arduino uno microcontroller which is pre-loaded with Arduino Duemilanove Boot loader version. The programming is done in Arduino programming environment. The actuator will controlled with respect to signals from potentiometer.