Hardware Notes
Brief technical notes on sensors, measurement methods, and practical observations from building IoT weather stations and air quality monitors in Hanoi (2017-2020).
Pages
- PM Measurement Methods — Gravimetric, BAM, light scattering, LIDAR, and regulatory standards
- Temperature — Shaded vs direct sunlight, self-heating, sensor comparison
- Humidity — Relative humidity, dew point, heat index, capacitive sensors
- Solar Irradiance Meter — Mini solar cell + INA219 for measuring sun power
- IoT Build Patterns — Common hardware/software patterns across projects