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hi all. is there a follow up to this question? I'm encountering the same problem now. i did set my ROS_IP/ROS_HOSTNAME/ROS_MASTER_URI on the turtlebot for multi-device-pc communication, as what Daniel said. the remocon app did found my turtlebot under "scan local network" but it was unable to access it and it shows:

org.ros.exception.RosRuntimeException: timed out waiting for a gateway_info publication

any help will be greatly appreciated. thanks in advance guys.