So the guys over at ARM took the arduino pid library and ported it for use with their mbed platform. Nice little stroke to the ego there. That’s not the main reason I’m excited though.  Because they’re a legit company, they have written documentation.
I’m terrible at documentation. Commenting my code is hard enough. Writing clear, concise, well-thought-out help files? I’m as useless as 1000 drunk monkeys with typewriters.
It’s always been nagging at me that the Arduino PID Library didn’t have a clear help document. Now, indirectly, it does. Since the backend is the same, everything they say about the mbed library works with the Arduino library as well.