Using an Arduino board with a data logging shield that holds an SD card for storage, an accelerometer on the frontfork and some method of recording wheel speed, it’s possible to collect data about your bike ride. Then, when at home, a Python script captures the data dump and graphs it.
Wdm006 also says:
I’m in the process of building an ABS and active suspension systemfor mountain bikes.The first task after initial modeling and designwork was to gather a lot of data for more specific design.
Original post can be read here.