Experience of Classes with the Portable Cloud Computing System and a Raspberry Pi Cluster

Experience of classes with the portable cloud computing system and a Raspberry Pi cluster is discussed. A "Portable Cloud Computing System (Portable Cloud)" is a portable system that can turn any room into an ICT-enhanced classroom or an ICT-enhanced meeting-room. The portable cloud is a portable rack, which contains Wi-Fi access points, a network switch, and a server cluster. The server cluster includes a NAPT (Network Address Port Translation) router, a DHCP server, a captive portal. The Wi-Fi access points, the NAPT router, the captive portal and the DHCP server make the space where the Portable Cloud is located, Internet accessible. The server cluster also contains the "Distributed Web Screen Share (DWSS)." DWSS can share teacher's PC's screen with students BYOD. We added a Raspberry Pi cluster to the server cluster of the portable cloud for exercises of classes this time. The portable cloud computing system made us realize to have the technical English class, the computer architecture class with exercises and the parallel and distributed computing class, with minimal physical contact between students.