bizzz Karma 15 Created 13 years ago Recent Submissions 1. ▲ Show HN: I tried to build a soundproof sleep capsule (lepekhin.com) 3 points · 6 days ago · 0 comments 2. ▲ Show HN: I built an under-the-door fan duct to lower bedroom CO2 (lepekhin.com) 64 points · 7 months ago · 29 comments All submissions on HN · View profile on HN