ROS tutorial #2: Publishers and subscribers

[@MarcusVinicius-lq3fe]

I loved the explanation. I have read numerous tutorials and books but only now I could really understand how the nodes communicate with each other. The multiple communication is awesome!

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@olliohls1846]

You have a clear way of presenting things! Thank you for making the effort to share your knowledge, Justin.

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@adityamehta4663]

Hey Justin, watching this in 2020, I referred to the ROS official docs but couldn't really understand it! This was really helpful! Thank you! I hope you recontinue making these videos!! Have a great and safe day ahead thanks!

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@antonisvenianakis1047]

Years later and your videos are still valuable. Thank you.

[@christospatrinos4943]

Amazing work Justin !It would be really helpful if you could continue with the tutorials :) Thanks again for your help

[@august6080]

Nice nice nice, I love your videos and pronunciation. Please keep going! I am looking forward to learn more from you.

[@mazheng6244]

Thank you for the tutorials Justin! They are very organized and helpful.

[@sapiential9939]

Thanks a lot! These tutorials were my reference when I first started with ROS-:)

[@van-nhantran1915]

Very straight forward explanation. I hope you can make a lot of those videos like this. Anw, thank you for contributing to ROS community :)

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@magokeanu]

you are so clear dude, an so practice, thanks!

[@danielchan9846]

Thank you for this awesome tutorial video. Keep doing thing like this.

[@siyangren6663]

Thank you for helping me keeping my job.

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@MANOJKUMAREM]

made my day thanks Justin

[@kalpaKiddo]

Thank you so much!! This is really very helpful. Please continue making them.

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@Goldichan92]

Really good tutorial! Thank you!!

[@designworks7347]

nice .am waiting for more video

[@conorcarmichael]

Really helpful, thank you for the tutorials!

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@stony74]

Thanks for the great tutorial! What software do you use to create these nice slides?

[@dgb5820]

This is so exciting do you believe we can writer an algorithm in graphical code Also you are so interesting and make a complicated subject easier to understand

[@mao-weinilsson2718]

Omg so clearly explained

[@amiltonwong]

Hi, Justin, Thanks for presenting such a good tutorial. BTW, could you also upload the slides?

[@JustinHuang101]

+Milton Wong Added a link to the bottom of the description. Thanks for your comment!

[@amiltonwong]

+Justin Huang THX~

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@nissim2007]

Hey, great work! Thanks!

[@vlgordon1]

If I wanted the turtlebot to go to a specific location after having it map out its environment, how would I do that without setting a 2d goal?

[@drproteus9102]

HI Justin, Great video...Have you thought about posting a video on communicating with an actual servo,motor or robot. There are a lot of videos on running simulations in Gazebo but none on actually installing and running ROS on a robot in the in this physical dimension. preferably something using an adriuno or Raspberry PI or something else approachable to a robot hobbiest. Again great video . Thank you.

[@krishnawa_]

Great job

[@riyadhzulkifli49]

Hi Justin Huang, great video. If I happen to have 2 node (2 ROS install on 2 raspberry pi) can the message being sent between 2 raspberry pi through any kind of medium such as wifi or wireless access point ?

[@paulachittaro8862]

Hello Justin I'm new into robotics and also ros. I'm using ros kinetic, and when i try to publish to cmd_vel i get a name error Do you know what can i be missing? Thank you

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@mohammada.alshamsi5216]

great video tutorials. quick question, how can I change the ROS_MASTER_URI to subscribe and publish on a different device.

[@JustinHuang101]

+M Alshamsi23 you do so by changing any other environment variable: export ROS_MASTER_URI=otherdevice:11311

[@mohammada.alshamsi5216]

Thanks for the reply

[@24_Ngocquynobel]

Thanks So useful

[@Mostafa-mg1dy]

Great explanation ,is there a possible way to contact with yu?

[@milanky]

Check out this course www.udemy.com/course/ros-tutorials/?couponCode=ROSPROMO

[@justkiddingboy3250]

ありがとうござました！It was quite awesome too!

[@govindrao1640]

bidirectional nodes communication in c++ example robotics with publisher and subscribers ? please help me .

[@mileeey3799]

Thanks!

[@seethemrise6047]

What actually a parameter is?

[@unlimitedsystem6525]

thanks...