#include AirGradient ag = AirGradient(); void setup(){ Serial.begin(9600); ag.PMS_Init(); ag.CO2_Init(); ag.TMP_RH_Init(0x44); //check for SHT sensor with address 0x44 } void loop(){ Serial.print("PM2: "); Serial.println(ag.getPM2()); Serial.print("CO2: "); Serial.println(ag.getCO2()); TMP_RH result = ag.periodicFetchData(); Serial.print("Humidity: "); Serial.print(result.rh); Serial.print(" Temperature: "); Serial.println(result.t); delay(5000); }