Let's Make Robots!

multiple arduino's in one project

im currently working on a octo-pod kind of like chopsticks. i plan on using 4dof legs from the t-hex and some components from vex robotics for the frame. i want to use two Dagu spider controlers. i want to use one for the legs and possible arm, and the other for sencers,etc... i was wondering how can i make the two work together as one.