Welcome to EnviroDIY, a community for do-it-yourself environmental science and monitoring. EnviroDIY is part of 
Hi again,
Another effort used the correct void statements to get past compile, see copy of sketch used.
However, even though no red error message posted on upload, two lines were presented:
Invalid library found in C:\Users\wchudyk\Documents\Arduino\libraries\EnviroDIY_Workshops_Online-main: no headers files (.h) found in C:\Users\wchudyk\Documents\Arduino\libraries\EnviroDIY_Workshops_Online-main
Invalid library found in C:\Users\wchudyk\Documents\Arduino\libraries\libraries: no headers files (.h) found in C:\Users\wchudyk\Documents\Arduino\libraries\libraries
and the serial output was as shown in the attached screenshot.
Your suggestions are welcome,
W
