An Introduction To IoT
summary
A Raspberry Pi runs Node.js to power an IoT litter box that records cat visits as time‑series documents in MongoDB. It uses a magnetic door switch to set maintenance mode, Raspberry Pi and Node.js for GPIO, and four load cells read every 0.1s via a spawned Python process to capture weight; data becomes daily documents with event arrays. The device assembles inside a box, boots from a Pi, and works reliably in daily use.
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chapters (12)
- 0:00Welcome and introduction
- 0:45What is IoT
- 2:12Why JavaScript for IoT
- 3:57IoT libraries and tools
- 5:18Introducing IoT Kitty Litter Box
- 7:27Building the project
- 8:08Hello World LED blink
- 9:31Maintenance mode sensor
- 10:37Load cells integration
- 11:40Time series data storage
- 12:42Final assembly and demo
- 13:04Call to action
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