In file included from D:\sketch_apr30a\sketch_apr30a.ino:1:0:

sketch\pulsePin.h:1:56: fatal error: MsTimer2.h: No such file or directory

 #include <MsTimer2.h>   // Library to interface Timer2

                                                        ^

compilation terminated.

exit status 1
보드 Arduino/Genuino Uno 컴파일 에러.

이거 에러뜬 이유좀 가르쳐주세요 빨리해야하는데 안되서 후.....