Show HN: I built an under-the-door fan duct to lower bedroom CO2
10 months ago
- #CO2
- #Ventilation
- #DIY
- The author's doctor suggested waking up energetically like Mickey Mouse, but the author felt groggy in the mornings.
- Realized CO2 buildup in the bedroom might be causing grogginess after experiencing similar symptoms in a poorly ventilated office.
- Designed a DIY CO2 monitor and found bedroom CO2 levels peaked at 1,700 ppm, higher than the ideal 400 ppm.
- Created a ventilation system using a Noctua fan to push stale air out under the door, pulling fresh air in through a trickle vent.
- Initial prototype made from pizza boxes showed promise, leading to a 3D-printed version.
- Simplified the design by removing unnecessary bends and adding a second fan to pull fresh air in, improving efficiency.
- Final system includes three fans and reduces CO2 levels significantly, improving morning grogginess.
- Plans to further refine the system by measuring airflow and creating a cleaner enclosure.
- Shares resources for others to build their own system, including 3D models and recommended parts.
- Reflects on the satisfaction of solving a personal problem through DIY and learning new skills.