Air Monitor
USB access is unavailable here. Open this page in a desktop browser with Web Serial support over HTTPS or localhost.
Ready to connect
Plug in your monitor with a USB data cable, then choose its port. Close any serial monitor first.
Measuring drift…
How warm-up works
The sensor waits at least 90 seconds, then checks that drift is below the target. After 10 minutes, the board starts reporting even if it is still drifting. Elapsed time does not guarantee readiness.
Room history
Gas resistance and the room’s learned baseline.
Gas history appears once the sensor is ready.
Up to 30 minutes in this tab. CSV uses the device’s metric units.
Device lighting
Device LEDsConnect to control the two LEDs.
Understanding the readings
The sensor compares gas resistance with a slowly learned room baseline. A drop can reveal a change in the air; it is not a calibrated VOC concentration or an air safety score.
Recovery: red → yellow above 0.72×; back to green above 0.90×. The board decides the color, so boundaries don’t flicker.
Device details & connection help
Only one app can use the USB port at a time. If connection fails, close other dashboard tabs and serial monitors, and check that the cable supports data.