Arduino library for HM3301/HM3302 dust sensor. https://www.seeedstudio.com/Grove-Laser-PM2-5-Sensor-HM3301.html

This is intended to provide a much simpler-to-use version of the library originally published by Seeed.

You can install it from Arduino Library Manager.

See examples/BasicHM330XDemo, which explains pretty much everything.

If you have M5StickC or M5Atom Matrix, please try examples/M5Stack/AirQualityMeter. Click the image below to watch the demo video.