Time to market is in many cases the most important requirement in the development of embedded systems. The goal of rapid prototyping is to get feedback on requirements, specifications and solutions in early stages of the project. The participants learn the method of rapid prototyping and can realize it using open source tools. The focus of the seminar is on the methodical, tool-based approach with the aim of obtaining executable and secure specifications. During the seminar, a sample project is systematically developed from the requirements through the application modeling stage and code generation up to tests. Tests are conducted both in a simulation environment and on the target platform. Here the knowledge about methods and tools is consolidated.