I'm not sure what the needs of the Hardware startup community are but I'm not a fan of the super specific subreddits. /r/startups isn't really that subscribed or busy, why not just post articles there?
Yea, this is fair point, but if you saw what we're seeing in HardwareLand, you'd see that we very underrepresented and feel VERY different from the standard startup crowd.
There's some similarities that HN does very well on - general lean startup stuff, etc., but HN will never be a community that up-votes "How to manufacture in China" type articles more than "How to Deploy X web stack in Y way" ones.
Something that most folks can do, and get a better product for the same dollars. Not to mention gaining many of the advantages about learning hardware as programming gives you on software.
It's a control issue. If you start a new subreddit, you "own" that subreddit, and can control posts etc. Also, since you're a mod, your posts garner more attention.