Running the robot
After building the robot, make sure the sensors and servos are connected as listed in the robot.yaml file. Could not fetch external code from 'http://nxt.foote-ros-pkg.googlecode.com/hg/nxt_robots/nxt_robot_sensor_car/robot.yaml': HTTP Error 404: Not Found
Now you can start your base robot:
roslaunch nxt_robot_sensor_car robot.launch
To make sure everything is running fine, look at your node graph:
Now try driving it around with nxt_teleop.