Dropping connection

Question

I am trying to run joy Tutorials/WritingTeleopNode on Ubuntu 11.4 with ROS electric. I am using a Cordless Rumble Pad 2. Everytime I get an [ERROR] [1323140529.624261794]: Client [/teleop] wants topic /joy to have datatype/md5sum [joy/Joy/e3ef016fcdf22397038b36036c66f7c8], but our version has [sensor_msgs/Joy/5a9ea5f83505693b71e785041e67a8bb]. Dropping connection. The joystick is working up to that point.

Any help would be appreciated, Morpheus

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Originally posted by Morpheus on ROS Answers with karma: 111 on 2011-12-05

Post score: 2

Answer 1

That error indicates that some node is publishing a sensor_msgs/Joy message on /joy but your node is expecting a joy/Joy message.

It appears tutorial was not updated for Electric. In Electric, the Joy message was migrated to the sensor_msgs package and saw the addition of a Header field.

The quick fix for your teleop code should be change from joy::Joy to sensor_msgs::Joy, updating the includes and manifest dependencies appropriately.

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Originally posted by Eric Perko with karma: 8406 on 2011-12-05

This answer was ACCEPTED on the original site

Post score: 1