Are you or the other member of the team collaborating with some established open source projects?
It looks like a long list of projects. It reminds my group of friends. We did a lot of projects at the end of high school/ beginning of the university.
Do you have some of the projects online? A nice blog post about one of the projects with some photos/graphics/screenshots would be a good submission for HN. (Most of the times it's better to write one blog post for each project that contains some technical details, instead of a blog post that includes all of them but is very shallow.)