If you are 200% sure the tried, proven, and working by others besides you. You may forget to refresh you Arduino Development Environment.
case 1:
in your sketch code:
#include "?????.h" rather than #include should be used
case 2:
you have started your Arduino Development Env.
Later, you added a new library folder under your Arduino directory
you then test the sketch codes, and found "error in ???.h"
>> You must close the Arduino and add the library first, and re-start Arduino to take effect
case 1:
in your sketch code:
#include "?????.h" rather than #include should be used
case 2:
you have started your Arduino Development Env.
Later, you added a new library folder under your Arduino directory
you then test the sketch codes, and found "error in ???.h"
>> You must close the Arduino and add the library first, and re-start Arduino to take effect
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