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Justin Castilla

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There and back again... but by I-5 or the ferry?PyCascades 20262026-03-21
Built an agentic AI that queries WSDOT ferry schedules, Google Maps drive times, and ElasticSearch-indexed calendar events to compare routes, costs, and…
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What's that smell? Monitoring air quality with Python, Raspberry Pi, and RedisPyCon Italia 20232023-05-25
Builds a hyper-local air-sensor network using a PMS particulate sensor (~$15) hooked to a Raspberry Pi Pico W ($6) running MicroPython, sending PM2.5 and…
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What's that smell? Detecting air quality with Python, Raspberry Pi, and Redis 🌳Python Web Conf 20232023-03-13
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…
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