14 / IoT / Environmental sensing
SewerSense
An ESP32 sensing project bringing environmental readings and device state into one interface.
01 / Context
The problem
An environmental-sensing prototype needs to make readings, missing or stale data and device connectivity understandable in one place.
02 / Engineering
The approach
Integrate acquisition firmware and a dashboard that presents observations with device state, while retaining explicit calibration and hardware-validation boundaries.
An ESP32 monitoring project involving MQ-4, MQ-7 and MQ-135 gas-sensor modules, a DHT22 temperature/humidity sensor and a MAX30102 pulse sensor. Firmware and a web dashboard support experimentation with readings, connectivity and alarm information. Demonstration displays and uncalibrated signals must be distinguished from validated measurements.
03 / Toolkit
Technologies
- ESP32
- MQ gas-sensor modules
- DHT22
- MAX30102
- Web dashboard
04 / Purpose
Intended contribution
Support connected environmental instrumentation with explicit device-state reporting and measurement-quality checks.
Development record
What has been established
Firmware builds and dashboard checks were recorded. Sensor calibration, pulse readings and alarm wiring require further verification. This project is not a certified safety instrument and cannot establish that a workplace is safe.
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