[buffalobillpatrick]

A/C Thanks but that is the same code that I tried to get working for 2 days.

from my post #3 above:

"I found some code that is suppose to work on Github "T6603" but it won't download as my Imac is too old to run latest Safari. So I copied & pasted the .cpp & .h code still won't compile for me possibly it's Python. I don't understand the source code."


sketch_apr03a.cpp.o: In function `__static_initialization_and_destruction_0':
/Users/jamespatrick/Downloads/sketch_apr03a.ino:24: undefined reference to `T6603::T6603()'
/Users/jamespatrick/Downloads/sketch_apr03a.ino:24: undefined reference to `T6603::~T6603()'
sketch_apr03a.cpp.o: In function `loop':
/Users/jamespatrick/Downloads/sketch_apr03a.ino:32: undefined reference to `T6603::get_co2()'
sketch_apr03a.cpp.o: In function `setup':
/Users/jamespatrick/Downloads/sketch_apr03a.ino:28: undefined reference to `T6603::begin(unsigned char, unsigned char)'