This paper reviews strategies for embedded systems for product development and research prototyping. It focuses on the open-source and open-access technologies that can be applied into wiring smart cities, smart buildings, and smart building components. The paper contextualizes this discussion through two smart product case studies deploying microcontrollers and Raspberry Pi with Node-RED and publish-subscribe messaging services. The value of these case studies lies in identifying approaches

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... enhancing user-focused building services and in demonstrating new qualitative characteristics these services would provide. The studies presented here exemplify effective research pipelines into embedded technologies and smart building systems.