This paper presents a cooperative project developed
by two technical vocational schools. The project consists of the
design and implementation of a prototype of an IP Public
Address, closed circuit TV (CCTV) and access control system
that uses the "Raspberry Pi" single-board computer as control
system and non-electronic parts made with a 3D printer. The
aim of the project is training students in maintenance of Voice
over IP, audio and video. The project has been funded by the
regional government Xunta de Galicia.
