Show HN: A subtly obvious e-paper room air monitor
5 days ago
- #indoor air quality
- #DIY projects
- #health monitoring
- The project addresses the issue of stale indoor air due to closed windows, leading to increased CO₂ levels and humidity, which can affect health and comfort.
- CO₂ levels above 1,000 ppm indicate insufficient ventilation, with higher levels causing reduced performance, tiredness, and severe health issues at extreme values.
- Relative humidity outside the 40-60% range can lead to health problems, including dry skin, respiratory infections, or mold growth.
- The e-paper room air monitor uses simple hardware like M5Paper, Sensirion SCD40 sensor, and a Raspberry Pi 4 for monitoring and alerting when air quality deteriorates.
- A dashboard provides long-term air quality trends, and a Telegram bot sends daily summaries to encourage better air quality habits.
- Future plans include making the GitHub repository public and discussing implementation challenges in part 2 of the blog series.
- Contributions are welcome, including code improvements, 3D case designs, sensor ideas, or general feedback.