In this study, computer vision application was realized by using Raspberry Pi, USB camera and 3D robotic arm system, which are designed with 3D modeling programs and output from 3D printer. The system automatically determines the position information of the detected objects from the camera and calculates the directions and angles of the robot joints using the position information. Because of calculations, the robot Arm moves to the target. The robot arm is 6-axis industrial type. The Raspberry PI-based system uses python programming language and OpenCV library for image processing.