Indeed. The software ‘cronairquality.exe’ by itself (without an external additional configuration file) could download the data from the local PurpleAir unit (channel #1) to the file ‘airquality.txt’ (as it does presently).
The software ‘cronairquality.exe’ with (using) an external additional configuration file could download the data from:
- either the local PurpleAir unit (channel #2) to a file with a different name (a name other than ‘airquality.txt’ to prevent overwriting)
- or from the Thingspeak cloud storage (channels #1 and #2), again, to a file with a different name (a name other than ‘airquality.txt’ to prevent overwriting)
The unit ID number is supplied with the unit when it is sold.
Indeed, again, the two ‘PM2_5Value’ values represent the two channels.
I am attaching the PDF file ‘Using PurpleAir Data’ that will identify the parameters found in the file downloaded from the Thingspeak cloud storage.
Using PurpleAir Data.pdf (85.4 KB)