BetoCC011's profile - activity

In the documentation, they say i can only use this driver in fuerte version or newer, due to the dependency on sensor_msgs/TimeReference

Is it possible to chance the driver so it doenst have this depency, or to chance ros electric to have this depency?

Thanks.

Hello guys, i'm just starting to learn ROS, but i'm having some problems following the tutorials: 1- The Turtlesim windows was supposed to show a turtle, but mine just shows the blue color. What did i do wrong? Or is it because i'm using the beta version of ROS (fuerte)?

2- The command "rosmsg show <msg name="">" doesn't work! every time i try it, it shows me: "Cannot locate message [Num] in package [beginner_tutorials] with paths [/home/beto/ros_workspace/beginner_tutorials/msg]", but in this folder there is the msg Num.msg, what am I doing wrong?

3- The command "roswtf" tells me: "ROS_ROOT is invalid: ROS_ROOT [/opt/ros/fuerte] must end is directory named 'ros'", but this is the directory, i dont know why its telling me this.

One last thing, the tutorial tells me to execute this file: setup.sh, that contains this text: " #!/bin/sh source /opt/ros/fuerte/setup.bash export ROS_ROOT=/opt/ros/fuerte export PATH=$ROS_ROOT/bin:$PATH export PYTHONPATH=$ROS_ROOT/core/roslib/src:$PYTHONPATH export ROS_PACKAGE_PATH=~/ros_workspace:/opt/ros/fuerte/stacks:$ROS_PACKAGE_PATH export ROS_WORKSPACE=~/ros_workspace"

But i'm not sure this is the version for the fuerte version of Ros, because i just copied the electric version and changed a little bit so it would work on ros, maybe that's why im having those problems.

Thanks everyone.. :)

I have to test some outputs from my topics, but rostopic does not print the messages being published at the topic, i had to make a new node just to get the messages and print them. My node was able to get the messages, so they are being published...

when i try to run: rostopic echo my_topic it outputs: WARNING: cannot load logging configuration file, logging is disabled

and just stays running, without outputting anything.

I already tried remaking the package rostopic, it was successful. I tried looking at the code, but i couldn't find anything wrong there. How can I fix this? :)

Well guys, i don't know what the problem was, but i reinstalled ROS and now its working! :) Thanks!

I created a new message following the tutorial i found on http://www.ros.org/wiki/ROS/Tutorials/CreatingMsgAndSrv

But, how do i use it ?

I know how to use standard ros messages, like this:

// First i create the publisher
ros::Publisher fix_pub = n.advertise<sensor_msgs::NavSatFix>("fix", 1);

// Then I create the message.
sensor_msgs::NavSatFixPtr fix(new sensor_msgs::NavSatFix);

// Then, after I'm done editing, i publish the message
fix_pub.publish (fix);

But how do I do that, if I didn't make any class... I tried to find the standard messages' classes, the sensor_msgs/NavSatFix.h for instance, but i couldn't find it, can u guys help me?

So, if I want to use the message I must create another package for it? Can't I create the message inside of my package? Because when I tried as you said using my package, it didn't work :(