It's totally ok to submit your own projects to HN but you've been overdoing it in two ways: (1) too many reposts of the same projects (a small number of reposts is ok, but 4 or 5 is excessive), and (2) your submission feed consists almost entirely of your own stuff, and that is excessive. A good proportion would be about 1/3, and the rest of the submissions should be unrelated links that you just find personally interesting.
I hope this explanation is useful! You're certainly welcome on HN.