While I think this is cool, I am not really sure what the advantage is of this over a bunch of micro controller cards that you can connect with a USB. There ar

While I think this is cool, I am not really sure what the advantage is of this over a bunch of micro controller cards that you can connect with a USB. There are a lot of different ones available and you can get them per-assembled or as kits. If you are waiting for this to control things with your Raspberry PI, I think some choices already exist. For example: http://www.societyofrobots.com/axon_select.shtml http://www.societyofrobots.com/axon_select.shtml http://adafruit.com/products/849 http://adafruit.com/products/849 http://www.parallax.com/Store/Microcontrollers/PropellerDevelopmentBoards/tabid/514/CategoryID/73/List/0/SortField/0/Level/a/ProductID/748/Default.aspx http://www.parallax.com/Store/Microcontrollers/PropellerDeve... http://www.parallax.com/Store/Accessories/MotorServoControllers/tabid/160/ProductID/595/List/0/Default.aspx?SortField=ProductName,ProductName http://www.parallax.com/Store/Accessories/MotorServoControll... http://www.parallax.com/Store/Microcontrollers/PropellerDevelopmentBoards/tabid/514/CategoryID/73/List/0/SortField/0/Level/a/ProductID/817/Default.aspx http://www.parallax.com/Store/Microcontrollers/PropellerDeve... That's just a fraction of what is out there. And to repeat, I think the gertboard is cool. But if you are waiting on it to control things, you don't have to.