When HN users recommended it
1 HN user recommended this in 2018, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
Smart Air DIY Purifier White
Amazon's catalog no longer lists this product (checked 2026-11-02). The name comes from the link HN users posted.
I have found this on amazon seems like someone is already build a complete prototype. https://www.amazon.in/Smart-Air-DIY-Purifier-White/dp/B01CP5...