sorry, doesnt english well.
help me, 5 hours search google
when i tried to including .h file in libraries\custom_directory, IDE says 'there're no such file or directory'.
i copy & paste .h file to already-exist library directory such as Servo and it works fine.
i use Library Manager. download Contributed library. and move .h file to this. it works fine.
why doesn't it work on my directory? does somebody know how to solve this problem?