DIY IoT Gas Monitor Built With ESP8266 and MQ-2 Sensor Streams Data to Dashboard

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A developer has built an IoT gas level monitoring system using an ESP8266 NodeMCU and an MQ-2 gas sensor. The sensor's analog output is read through the board's A0 pin and transmitted over Wi-Fi to the KiwisIoT platform. The readings are displayed on a dashboard using a Gauge widget, allowing remote monitoring. The project was programmed in Arduino IDE and sends new values roughly every two seconds. The author notes possible extensions such as buzzer alarms and alert notifications.

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