I have downloaded some projects in the past and was able to successfully compile them and do my modifications . With the below projects they all fail out with errors I have added the required libraries . Is there a setting within the compiler I'm missing?
Ah. Yes. But. What errors?
Did you last use them prior to Arduino version 1.0 by any chance? Several important
changes happened then, the most obvious being the introduction of Arduino.h to replace WProgram.h
Newer libraries are conditional like this:
#if ARDUINO >= 100
# include <Arduino.h>
#else
# include <WProgram.h>
#endif