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IoT Air Quality Monitor with a Live Dashboard

Approx. component budget: Rs. 3,000 - 6,000

Objective

Measure indoor and outdoor air quality over days and compare it with a reference monitor or public data.

What you will build

An ESP32 node with dust, gas, temperature and humidity sensors that sends readings to the cloud, with a live dashboard, an alert when air quality turns poor and a history graph.

Results you can expect

• Sensor readings vs a reference source
• Calibration curve
• Data loss rate over 48 hours
• Alert delay
• And power use of the node

What you will learn

Sensor interfacing, Wi-Fi and MQTT, cloud dashboards, calibration, and data quality.

Tools and notes

ESP32, PMS5003 or SDS011, MQ-135 or SGP30, MQTT with Node-RED or ThingSpeak, Grafana. Low-cost sensors need calibration; say so in your results.

Resume points from this project

• Built and tested IoT Air Quality Monitor with a Live Dashboard; objective: measure indoor and outdoor air quality over days and compare it with a reference monitor or public data.
• Measured and analysed sensor readings vs a reference source and calibration curve; wrote the report and presented the results in a viva. Add your own numbers: [x].

Replace [x] with your own measured results. Write only what you really did.

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