!The paper introduces a development environment tool of vacuum cleaner robot software for educating master's course students. The tool gives students a robot development environment on C-like language and C#. Educational robots are widely-known to be efficient for learning the embedded and cyber-physical system design. With increasing the use of the educational robot, the requirement has become to be complicated. We focus on the five requirements: motivation, extendibility, usability, adaptability and transplantability. The main implementation idea is a runtime library and serial communication. We apply the tool to two applications and transplant to 3 type robots. In this paper, we present the outline of the educational robot software and its development.