SHAD robot, which is located in IYTE Robotics Laboratory, is designed as a 4 degrees-of-freedom manipulator which has a PRRR serial kinematic structure. The prismatic joint works along the vertical axis, and the revolute joints rotate about the vertical axis. Although the positioning task on the plane can be executed by two revolute joints, SHAD robot is designed to be kinematically redundant using three revolute joints. SHAD name is the abbreviations for SHoulder Haptic Device. The manipulator is constructed by using industrial servomotors coupled with high reduction ratio gears. Hence, this robot can only be used as a haptic device if admittance control is implemented for its control scheme. Accordingly, the aim of this study is to implement and test the admittance control algorithm on SHAD robot. However, since a human operator uses this haptic device when he/she is placed inside the workspace, certain safety precautions should be implemented. Therefore, initially, exploiting the kinematic redundancy of SHAD robot, an obstacle avoidance algorithm to move the robot’s links away from the human operator is implemented and tested in simulations and experiments. To do this; (1) SHAD’s mathematical model is derived, (2) This model is verified, and obstacle avoidance algorithm is validated by simulation tests in MATLAB/Simulink, (3) SHAD robot’s experimental setup is developed, (4) Experimental tests for obstacle avoidance are conducted. After the obstacle avoidance algorithm is implemented in the control of SHAD and proven that it works, admittance control experiments are carried out on human subjects to investigate the effects of the admittance term parameters, mass and damper, on certain performance metrics of the user. It is deduced that; (1) as the mass parameter of the admittance term is increased, accuracy of the operation is decreased while the total effort of the user is increased, (2) as the damper parameter of the admittance term is increased, both the accuracy of the operation and the total effort of the user are increased, (3) when the same corner frequency with different admittance term parameters are used, the accuracy of the operation is almost the same but total effort increases as the parameters increase.