A small library that records the frequency between events. That frequency can later be used for timing events.

To install (on OSX):

1. cd to your default Arduino directory
2. Run this in the directory git clone git://github.com/d2kagw/arduino-rhythm-library.git Tap
3. Open (or relaunch) the Arduino IDE
4. Select Sketch > Import Library... > Tap
5. Profit.

There's no example directory for this library since the setup is quite complex. However, you can find a detailed blog posting and schematic for a full Arduino project here on Learning Arduino.

Enjoy.