A library to communicate with the Panasonic SN-GCJA5 particle sensor. Communicates with the SN-GCJA5 over I<sup>2</sup>C to quickly integrate a particle sensor into your project. The sensor detects particulate mass density and particle count for various size particles from PM1.0 to PM10 (0.3-10um). The sensor requires 5V supply and 3.3V I<sup>2</sup>C.