applications package about turtlebot3 HOT 9 CLOSED

Hello :)

Delete build and devel folder in catkin_ws and try once again catkin_make command.

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@francoiswindels
So your error log is actually quite explanatory - it tells you:
"error: ‘robot_model’ was not declared in this scope"

That cpp file is written in a way, so that it works on both Burger and Waffle without duplicating code. When you run it, it looks for a variable robot_model and from then onwards, it knows whether you want to be working with Burger or Waffle. So all you need to do is initialize it. If you keep working with different models, you can initialize it in the terminal every time you decide to do some coding (and then when you close the terminal, your variable will disappear). Or (and that is what most people do, because who has money and time for both versions 😋), you just add an extra line to .bashrc file. It is actually described in the official manual here: http://emanual.robotis.com/docs/en/platform/turtlebot3/bringup/

Just go
gedit ~/.bashrc
add line export TURTLEBOT3_MODEL = ... (whatever you have)
source ~/.bashrc

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Hello @francoiswindels :)

Did you try download turtlebot3_msgs??

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Hi,
thanks for following up,
i tried a build after deleting build and devel but that did not help
the problem seems to be coming from gazebo_ros_turtlebot3.cpp
any thought?

thanks
F

error_log.docx

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Okay, but if you look at your log, all errors start at line 45
If I am not mistaken, this is where it crashes:

bool GazeboRosTurtleBot3::init()
{
  // initialize ROS parameter
  nh_.param("is_debug", is_debug_, is_debug_);
  std::string robot_model = nh_.param<std::string>("tb3_model", "");

  if (!robot_model.compare("burger"))
  {
    turning_radius_ = 0.08;
    rotate_angle_ = 50.0 * DEG2RAD;
    front_distance_limit_ = 0.7;
    side_distance_limit_  = 0.4;
  }

So just 2 lines above robot_model.compare("burger") we have both declaration and initialization of the variable robot_model. You could put a print statement after it to see whether nh_.param<std::string>("tb3_model", "") was actually able to find it out.

Then your log says "turning_radius_’, ‘rotate_angle_’ , ‘front_distance_limit_’ , ‘side_distance_limit_’ was not declared in this scope". What you are doing inside "if" is initializing, but those variable should have been declared in a header file (gazebo_ros_turtlebot3.h which is inside "include" folder)

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Hi,
i tried just that and it all worked.
thanks
F

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