Frequency Counter (for fan tachometer or RPM)

[ScruffR]

Double posting is not appreciated.
I already have answered to the same question in this thread

Having trouble with particle library upload

The simplest way to test this is by adding extra files to your Web IDE project, name them as the original (if you get extra .cpp files you don’t need, you can just remove them by clicking the [image]), copy/paste the contents of the original file into the respective file tabs. If needed adjust the #include statements to fit the - now flattened - project structure. But since this library is rather hardware specific, I doubt it’ll work at all.