[heebyjeeby]

Thanks for replying hornychz.

Here is the results from the debug.

CO2 seems very high, maybe it is me breathing near the CO2 sensor as it is connected to laptop for debugging.
You can see that the CO2 sensor does a few readings of 431, and then a high reading. I think the readings of 431 are just the sensor starting up.

I am not sure if the PM sensors are working correctly, or if I have very clean air.

Code:

    WeatherDuino 4Pro Air Quality Monitor v8.0 b001 Please wait 30s Configuring CO2 Sensor Setting measurement range to: 5000 FF,99,1,0,0,0,0,0,66, 66,66 Measurement range changed! Disabling ABC Funtion Reseting Sensor 21,D,AC,FC,0,1,35,70,0, Calculated crc: A5 Wrong reply from CO2 sensor! FF,86,1,9A,38,0,0,0,A7, Calculated crc: A7 CO2 read: 431 - Temp: 16 FF,86,1,9A,38,0,0,0,A7, Calculated crc: A7 CO2 read: 431 - Temp: 16 FF,86,1,9A,38,0,0,0,A7, Calculated crc: A7 CO2 read: 431 - Temp: 16 FF,86,1,9A,38,0,0,0,A7, Calculated crc: A7 CO2 read: 431 - Temp: 16 FF,86,1,9A,38,0,0,0,A7, Calculated crc: A7 CO2 read: 431 - Temp: 16 FF,86,1,9A,39,0,0,0,A6, Calculated crc: A6 CO2 read: 431 - Temp: 17 FF,86,1,9A,39,0,0,0,A6, Calculated crc: A6 CO2 read: 431 - Temp: 17 FF,86,4,6C,39,0,0,0,D1, Calculated crc: D1 CO2 read: 1190 - Temp: 17 FF,86,4,70,39,0,0,0,CD, Calculated crc: CD CO2 read: 1194 - Temp: 17 Init MH-Z19 Ended Waking up the dust sensor... Reading will be done 40s later. Reading the dust sensor... PMS7003 readings: PM2.5: 1.41 ug/m3 PM10 : 2.12 ug/m3 PM2.5_1H_Avg : 1.41 PM2.5_NowCast: 1.41 FF,86,4,76,39,0,0,0,C7, Calculated crc: C7 CO2 read: 1160 - Temp: 17 Waking up the dust sensor... Reading will be done 40s later. Reading the dust sensor... PMS7003 readings: PM2.5: 0.00 ug/m3 PM10 : 0.72 ug/m3 PM2.5_1H_Avg : 0.71 PM2.5_NowCast: 0.71 FF,86,4,7C,3A,0,0,0,C0, Calculated crc: C0 CO2 read: 1167 - Temp: 18

Heeby