I'm still plugging away at RPi Oscilloscope benchmarking GPIO using Java Embedded in my spare time (stuck on getting NIO to work), but for now I need a break, so I'll go back to another cool use of GPIO using Java SE Embedded and a Raspberry Pi. Here are all the parts I just got for about $30.
I bought everything from RadioShack (except for the RPi), so you can do the same at home.
Here is the list of parts:
1: *Hexbug Spider Robot (60-013)
The goal is to use Skynet Big Data to make the Hexbug Spider robot move using a Java SE Embedded app running on the Raspberry Pi. So, this should be good... Go grab your RPi and buy these parts at your local 'Shack, then come back here for more instructions... :-D