Archive
Posts tagged Sensors
- Extending the Sensor Network with Zigbee: Inside the Fridge and Freezers
Five SONOFF sensors and a PoE Zigbee hub bring fridge and freezer readings into the existing network, revealing temperature swings and the limits of batteries in the cold.
- A Wi-Fi Sensor That Moves Between Networks
Four ESP32-S3 temperature and humidity sensors are ready. A setup button changes Wi-Fi and UDP settings without reflashing the firmware.
- Building Heated Sensor Houses for Outdoor Air, Ground, and Underground Temperature Measurements
Protecting outdoor temperature and humidity measurements from weather, condensation, and cold while keeping the sensors connected over PoE Ethernet.
- From Mechanical Wind Sensors to Ultrasonic RS-485 and RP2040
Prototyping a Veinasa CXS02B-N ultrasonic wind sensor over USB, then moving its NMEA-0183 stream onto an RP2040 for a permanent PoE-connected installation.
- Building a PoE E-Paper Temperature and Humidity Monitor
Combining an isolated ESP32 PoE board, an SHT40 temperature and humidity sensor, an e-paper display, and a custom 3D-printed enclosure.
- Building a Resilient, Local-First Sensor Network
How a local-first sensor network keeps collecting through internet outages, synchronizes every minute, processes history centrally, and publishes safely through Cloudflare.
- Indoor Temperature and Humidity Sensors
Building compact wired and wireless sensors for monitoring indoor temperature and humidity.