Revision history [back]

I think, it will be easier to connect an Arduino to your Raspberry pi. The arduino get the Information from the pi and will send it to the Servomotors.

The same like here: http://answers.ros.org/question/194049/joy-to-control-servo/

There is also the code to send the Infos to your Arduino. You need to install rosserial on your pi(including the arduino IDE, see tutorial http://wiki.ros.org/rosserial/Tutorials) and copy the code from the Servo-controller-example for your motors. You need to extend the code for your setup.