Jef, Poor of me, the new scubapro aladin square is not integrated in libdivecomputer (not in subsurface too...), it's the son of the famous uwatec aladin pro... I've just tested hidapi testgui (https://github.com/signal11/hidapi) and i success in connecting scubapro aladin square. What can i do now to help (i'm not a programmer)? Vavincavent