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Solved: I had first to copy data from pointer to another variable with data type turtlesim::Pose For example , turtlesi

Thanks i solved it out , I had first to copy data from pointer to another variable with data type turtlesim::Pose For e

Thanks i solved it out , I had first to copy data from pointer to another variable with data type turtlesim::Pose For e

create subscriber for /turtle1/pose data i tried to subscribe /turtle1/pose values to the node i created using this :

create subscriber for /turtle1/pose data i tried to subscribe /turtle1/pose values to the node i created using this :

create publisher for /turtle1/pose i tried to subscribe /turtle1/pose values to the node i created using this : ** in

create publisher for /turtle1/pose i tried to subscribe /turtle1/pose values to the node i created using this : ** in

create publisher for /turtle1/pose i tried to subscribe /turtle1/pose values to the node i created using this : ** in

I'm noob in ROS, and i used this aduino code to send Float64 data to ros

#include <std_msgs/Float64.h>

ros::NodeHandle  nh;

std_msgs::Float64 float_msg;

ros::Publisher chatter("chatter", &float_msg);

float x = 5;

void setup()

{

  nh.initNode();

  nh.advertise(chatter);

}


void loop()
{

  float_msg.data = x;


  chatter.publish( &float_msg );

  nh.spinOnce();
  delay(1000);
}

then i used the following command to control turtle sent publisher data

rostopic pub -1 /turtle1/cmd_vel geometry_msgs/Twist -- '[chatter, 0.0, 0.0]' '[0.0, 0.0, 1.8]'

but it doesn't read chatter as Float64 data so it doesn't work , even i checked rostopic info chatter and it had float64 data type

Thanks in advance

Thanks for your help :)

How to control turtlesim by a publisher data sent by arduino rosserial I'm noob in ROS, and i used this aduino code to s