ROS-Exercise

I wrote this with yhe help of tutorials on ROS wiki.

I did some practise on my own.

Authors and Current Version

• Author:
  • @Cuijie12358
    

Platform

• ROS indigo/kinetic
• ubuntu 14.04/16.04

Structure

• ROS_template

It is used as a template to commit.

• srv

AddTwoInts is the sample on wiki.

DirAndDis is which I wrote to calculate the times "w""a""s""d" is pressed by sending "up""left""down" and "right" in a service.

• src

  • dir_and_dis_client
    
  • dir_and_dis_server
    A service to finish this task.
    
  • talker and listener
    using topic and message to finish this task.
    
  • fibonacci_server
    action tutorial
    
  • teleop_wasd
    Using wasd to control the turtlesim, inspired by this.
    Though it cannot be killed by pressing ctrl-c since I got everything in the stream,it performs well :)
    I had wrote it long time ago but I missed the file so I didn't push this until today(11/1/2018).

Test

They can be divided by their names.

rosrun testpack teleop_wasd

Then just press the key.
I have to commit that it could be slow to identificate the key at first, but things get quite soomth after a while. What'more, notice that it cannot recognize two keys at a time and that's why you have to close the terminal to kill it.