Skip to content
Client Space

Explore 4TECH

Client SpaceIdea StudioTeam

Hardware. Firmware. Systems.

← The project collection

14 / Engineering case study

SewerSense

Multi-sensor data acquisition and a web interface for environmental monitoring experiments.

Engineering domain
IoT & environmental instrumentation
Project status
Completed
Developed by Mohammed Vashir
Difficulty
Intermediate
Worker wearing respiratory protective equipment in an industrial settingRepresentative imagery — not this 4TECH build.
Contextual photographNo project-specific field photograph, calibration record or end-to-end alarm test log is included in this public portfolio. The photograph above illustrates protective equipment and is not evidence for this project. Photo: Tima Miroshnichenko / Pexels · Pexels License. Resized and converted to WebP.

The problem.

Environmental sensing becomes more useful when individual readings, device state and communication quality can be reviewed together. A disconnected collection of sensor values makes faults and changes harder to interpret.

The engineering approach.

SewerSense combines an ESP32-based acquisition node with gas, ambient-condition and pulse-sensor inputs and a web dashboard. The workflow brings readings into one interface and supports examination of sensor communication and local alarm behaviour.

The project covers sensor interfacing, firmware, data updates and dashboard presentation. Its engineering value lies in joining physical inputs to an understandable system view, including the distinction between a live reading and an unavailable or unreliable channel.

The toolkit.

  • ESP32
  • MQ gas sensors
  • Temperature / humidity sensing
  • MAX30102
  • Web dashboard

Engineering contribution.

Demonstrates integrated sensing and remote monitoring across hardware and software.

Project documentation

What the record supports.

The available development record includes firmware builds and dashboard checks. Sensor calibration and alarm behavior still need physical verification before any operational claim.

  1. Firmware and dashboard

    Described work

    ESP32 firmware, multi-sensor integration and a live web dashboard are described, with build and interface checks recorded during development.

  2. Sensor and alarm integration

    Review finding

    Hardware troubleshooting covered sensor detection, data updates and alarm control. Pulse readings and buzzer wiring remained unresolved in the last available test notes.

  3. Safety performance

    Not verified

    Gas sensor calibration, exposure thresholds and reliable alarm behavior have not been established. The system does not demonstrate confined-space safety.

Technical scope & validation

This is an engineering monitoring project, not a certified life-safety instrument. Sensor values alone do not establish whether a confined space is safe to enter.

What would verify performance

  1. Confirm each sensor's power, interface and calibration against its exact module documentation.
  2. Test missing, stale and warming readings so the interface never presents them as a safe condition.
  3. Verify the alarm circuit and an end-to-end test record before making any field-use claim.

Have a related challenge?

Start with your goal. We will work through the possibilities.

Discuss a similar project