A lot of devices are accumulated during the existence of a house. Not all devcies to have up to date Internet interfaces. CroG is a gateway between legacy interfaces of houshold installations  and modern data interfaces of IoT solutions.

Up to 20 different types of  phyiscal connections can be attached to a CroG at the same time as its physical interfaces consist of PMOD modules.

CroG consists of an icoBoard, PMOD interface modules, software implementing hardware interfaces to connect legacy hardware to the icoBoard and Software implementing clowd protocols for IoT services.