We've been working towards improving ROS support and creating packages that people can use to build applications. Here's our current status:
Through mavros someone can have control of the autopilot from ROS. Similarly, the pwm, buzzer,statusled and ubled nodes (and topics) give direct access to hardware.
In the following video, Alex provides a walkthrough for some of the packages involved:
Packages are available at our github repositories and documented at the ROS Wiki:
We'd love to hear your opinion about which ROS abstractions you'd like to see in Erle-Brain.
Regards,

Comments
ROS stands for "Robot Operating System". It's a framework for robot application development.
Take a look at http://www.ros.org/.