Hi, have a look at the network setup wiki page: http://www.ros.org/wiki/ROS/NetworkSetup Lorenz > Hi Ander, > > Have you checked ROS_IP or ROS_HOSTNAME in addition to ROS_MASTER_URI? I’ve had similar problems when not setting these variables on my teleop computer. > > Take a look here: http://www.ros.org/wiki/ROS/EnvironmentVariables#ROS_IP.2BAC8-ROS_HOSTNAME > > Benoit > > > From: Ander Ansuategui > Sent: Thursday, September 08, 2011 10:57 AM > To: ros-users@code.ros.org > Subject: [ros-users] Strange problem running ROS across multiple machines > > Hi, > > we are facing some strange problems regarding communication between multiple machines. We are developing a teleoperation package for our Segway RMP200 robot, which has a Kinect on top. We run roscore, openni and the segway driver on the robot, and we can see all the topics by using rostopic list command from a laptop. Moreover, we receive the kinect image successfully in our teleoperation application running in the laptop, and we also have a ros service running on the robot, which is called also successfully. > > The problem comes when we try to move the robot by sending Twist messages to /cmd_vel topic. Apparently the messages don’t reach the robot because when we run “rostopic echo /cmd_vel” command no data is shown. But when running the same command in the laptop, the data is shown as expected. > > Following the tutorials, we have just changed the laptop’s ROS_MASTER_URI var. We have tried ad-hoc wired and wireless communication. We are surprised because most of the communication works (kinect and service call for instance) but writing to topics doesn’t. Has anyone experienced a similar behavior? > > We would be very grateful for any help. > > Regards. > > Ander > > > Mezu honen informazioa isilpekoa izan daiteke eta indarrean dagoen legediak babesten du. Hutsegite baten ondorioz jaso baduzu, bidal iezaiozu berriro bidaltzaileari eta ezaba ezazu. Milesker zure laguntzagatik. > La información de este correo puede ser confidencial y está protegida por la legislación vigente. Si ha recibido este correo por error, reenvíelo a su emisor y elimínelo. Gracias por su ayuda. > This e-mail may contain confidential information that is protected by our laws. If you have received this e-mail by mistake, please, notify the sender and delete it. Thank you for your help. > > > > -------------------------------------------------------------------------------- > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users -- Lorenz Msenlechner | moesenle@in.tum.de Technische Universitt Mnchen | Karlstrae 45 80335 Mnchen | Germany http://ias.cs.tum.edu/ | Tel: +49 (89) 289-26910