Hi Eileen,<br><br>Does your robot have a node subscribing to the cmd_vel published by p3robot_tele_key?  If so, can you use <a href="http://ros.org/wiki/rosnode">rosnode</a> to check/ping the node?<br><br>John<br><br><div class="gmail_quote">

On Tue, Oct 19, 2010 at 6:01 AM, 甄灵 <span dir="ltr">&lt;<a href="mailto:zhenlin86@gmail.com">zhenlin86@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">

Hi Tully,<br><br clear="all">   Yes, when I type <i>rxgraph</i> , I find that some point where
commands are sent but not recieved. And the problem is that I write a different node name when publish, so the robot can&#39;t receive the command. Thanks!<div><div></div><div class="h5"><br>-- <br>Eileen<br>TJ University of Shang Hai<br>

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