RoWin is a semi-automatic windows washing system designed especially for high-rise buildings. RoWin is an innovative solution for a complex problem. The problem was cleaning Tehran Book Garden building glass, with about 11000 square meters area of glass. We started solving this problem with “stage-gate idea to launch process” innovation management method and also with precise technology management methods. We divided problem into two sub-problems. First, we found a way to build a robot with ability to climb the walls. We presented several solutions for this problem and verified some of this solutions through building several prototypes and many tests. After the best answer to the problem had been selected, a solution to cleaning the glass was pored over. In the project, we experienced how to develop an idea and lunch despite lack of time and money. Now, one can say that we have a successful team and technology that we made it.