Internet de las cosas y plataformas de código abierto como herramientas de apoyo para la construcción 4.0.= Internet of things and open source platforms as support tools for construction 4.0.

Today, cities are experiencing radical operational changes. These new models known as Smart Cities aim to improve the quality of citizens life using data collected about the environment through the use of Information and Communication Technologies (ICT). In addition, the Internet of Things (IoT) is one of the great technologies that supports Smart Cities to achieve these objectives. At the same time, one of the research lines that is becoming very relevant is related to open software and hardware application trends. One of these branches are the well-known Open Source Platforms (OSP), which allows the development of self-developed projects (DIY). Thanks to this, it is now possible to carry out projects and solutions that until now were hardly possible to achieve. The present work shows one of the lines of research that is being carried out from the group in the field of monitoring and automation of buildings through the combination of the OSP and the IoT. In addition to showing the existing development possibilities, a practical case of this technology will be presented, which was carried out during the energy monitoring process in the San Roke 32 building in Donostia-San Sebastián, rehabilitated under the Passivhaus criteria.