What's that smell? Detecting air quality with Python, Raspberry Pi, and Redis 🌳
summary
Shows building a portable PM2.5 air monitor that wires a cheap particulate sensor to a Raspberry Pi Pico W, runs MicroPython, and pushes timestamped readings into Redis streams and Redis TimeSeries. Reads every 5s for demos (recommend ~10min), stores values plus temp, and uses a 12-sample sliding window to avoid false positives before sending SMS alerts; visualizes with Grafana and can trigger relays/servos to run purifiers or open windows.
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chapters (9)
- 0:00Introduction and motivation
- 2:35Wildfire smoke health impacts
- 8:15Hardware setup and Redis integration
- 13:36Streaming sensor data to Redis
- 17:54Data visualization with Grafana
- 22:13JSON storage and SMS alerts
- 28:47Physical sensor assembly demo
- 31:56Future project ideas
- 32:40Resources and conclusion
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