Had a look at sample code of groove dust sensor. The concentration output in the end is of PM 1.0 or PM 2.5. I am looking for a sensor module that can give me concentration of pm 2.5
Grove-Dust sensor uses counting method to measure dust concentration, not weighing method, and the unit is pcs/L or pcs/0.01cf. It measures PM whose size is around 1 micro meter
For PM2.5, please refer to http://wiki.seeedstudio.com/Grove-Laser_PM2.5_Sensor-HM3301/ thanks.