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Cannot communicate/ping the turtlesim

asked 2017-03-08 09:48:03 -0500

nathanspotts gravatar image

I am going through the tutorials and have reached point of using the turtlesim for learning about nodes, etc. I am trying to ping the turtlesim node, but there is no communication with the turtlesim. I have it running and roscore from 2 separate terminals and am pinging it from a third. Pinging the rosout node does work.

Here is the rosnode info for turtlesim:

Node [/turtlesim] Publications: * /turtle1/color_sensor [turtlesim/Color] * /rosout [rosgraph_msgs/Log] * /turtle1/pose [turtlesim/Pose]

Subscriptions: * /turtle1/cmd_vel [unknown type]

Services: * /turtle1/teleport_absolute * /turtlesim/get_loggers * /turtlesim/set_logger_level * /reset * /spawn * /clear * /turtle1/set_pen * /turtle1/teleport_relative * /kill

contacting node http://nathan-p850:45561/ ... ERROR: Communication with node[http://nathan-p850:45561/] failed!

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answered 2017-03-08 10:43:59 -0500

nathanspotts gravatar image

well after doing some research, I found out that my ROS_IP was not set correctly. So, I followed the instructions here and set my ROS_IP to 127.0.0.1 using: export ROS_IP=127.0.0.1

Hope this helps someone else.

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Asked: 2017-03-08 09:48:03 -0500

Seen: 250 times

Last updated: Mar 08 '17