Home Hacker News Show HN: I made a CO2 sensing Christmas ball https://ift.tt/3lUW0l7 Show HN: I made a CO2 sensing Christmas ball https://ift.tt/3lUW0l7 Hat hair December 10, 2021 0 Show HN: I made a CO2 sensing Christmas ball https://ift.tt/3pMdLEh December 10, 2021 at 06:09PM Tags Hacker News Facebook Twitter Whatsapp Newer Older
