Aeronix Smoke Monitor

Waiting for data

–

No readings yet.

Sensor value

Reading Elevated line Smoke line

Baseline–

Average–

Peak–

Smoke events0

Smoke events in this range

None.

Detection settings

The sensor reports a raw number. Smoke is flagged when the value rises above its recent baseline (the 25th percentile of the last 15 minutes), so it adapts to your room and sensor.

Elevated above baseline Smoke above baseline Full scale of your ADC

Connect a device

The sensor publishes to the IMITECH MQTT broker; this page reads from it. The password is kept by the site owner.

ESP32 sketch (needs the PubSubClient library): see esp32-mq2.ino.

The MQ2 reacts to smoke and to several gases (LPG, methane, alcohol, hydrogen), so a high value means "something burnt or gassy", not specifically cigarette smoke. Let a new sensor warm up for a few minutes before trusting it.