Smart Home & Building Mechatronics · Intermediate

ESP32 Air Quality Sentinel

Quiet Wi-Fi sensor node measuring indoor air quality and publishing a local dashboard. Quiet Wi-Fi sensor node measuring indoor air quality and publishing a local dashboard.

Components

• ESP32
• PM/CO2/temp/humidity sensors
• Wi-Fi

Build steps

1. Inventory the board, actuators, sensors, and power rails listed for S01.
2. Build and inspect the low-voltage wiring against the supplied connection diagram before connecting actuators.
3. Flash the firmware, run the startup self-check, and record the printed board and firmware version.
4. Calibrate the sensors and limits, then run the acceptance tests at the lowest safe energy level.

Test and expected result

Compare readings against a reference sensor, test reconnect behavior, and check deep sleep current.

Safety and limits

Do not publish credentials or private network data.

Download Arduino source code

Download connection diagram SVG