Pervasive sensors networks coexist with users offering them services transparently, without the need for users to interact directly. This work defines an architecture that allows the creation of products and services to provide home automation functionalities for a large segment of population. A platform, on a low cost device and high-capacity computing, as basis of a transparent and indistinguishable sensors network has been designed. This includes simple configuration methods and it is capable of accommodating multiple services, from automation of blinds, lighting controls or security, to mechanisms for monitoring a patient health. A medication reminder service and warning, completely transparent to the user, has been the first developed application. This service plays, at the configured time, a reminder through the speakers. The user will close the event, simply performing the action (take the pill), thanks to the information transmitted by a device installed in the medicines drawer. Otherwise, if he forgets, the system will remind it to the user from time to time.