[werk_ag]

Hello George,

I will try to help, however if you don't have any knowledge about how to use Arduino IDE, it will be a dificult task.

First error you refer, happens because somehow first char on line 61 of the Config_Option.h file has deleted:
It should be:

Code:

#define SDC30_ELEVATION_CALIBRATION_METHOD   1

Change 1 to 0 according to: // 0= Elevation defined above, 1= Atmospheric Pressure from BME280 sensor (overrides ELEVATION)


Please try to learn something about using Arduino IDE, where to place libraries, etc, etc. There are many many tutorials on the Internet, here on the forum you may also found some no structured info.

Let me know about your progresses, I will do my best to help.

Rgs.
Werk_AG