This bachelor's thesis is focused on robotic end-effectors, grippers in particular and is bringing their general overview. The goal of the thesis is to design, assemble and program a three finger gripper. The effector is designed using ROBOTIS Premium building set, especially Dynamixel actuators, obstacle detector and Bioloid frames, 3D printed parts. It is possible to use this three finger gripper in two configurations: centric for grasping spherical objects and parallel for grasping cylindrical objects. Functionality of this end-effector was successfully experimentally verified. Main benefits of the gripper are: its ability to adapt to shape and size of grasped object and to automatically initiate its grasping