For an internet community, Hacker News has a rather unique cultural profile, and "Show HN" is not only a relatively recent feature but also one that attracts significantly less eyeballs than the front page of "News".

It exists primarily to deal with the problem of things users hacked up [e.g. your project] trying to compete for attention with big news generated by professionals and established organizations etc.

Anyway, I hope you find value in the site.

Good luck.