Physical computing is receiving much attention in the shape of numerous variations of devices. This trend is apparent in computer science education from kindergarten to university. To improve the implementation of physical computing in secondary school I observe student's process of problem solving when they use physical computing devices. To successfully implement this in schools, it appears to be valuable to investigate problems that occur during the the process and to develop supporting material. These topics are the foci of my doctoral project and will be figured out with results from scientific inquiry. Particularly building on the experiment as an inquiry working technique.