Ask Your Question
0

multiple turtlebots on wireless network

asked 2013-06-20 10:01:14 -0500

andrewlybarger gravatar image

updated 2013-11-18 07:16:40 -0500

tfoote gravatar image

I have 10 turtlebots (version 1, the white one) that I'm trying to operate on a wifi network (g wireless standard). Any three of them together work fine but as soon as I add a fourth the turtlebot_node starts throwing lots of error messages about not being able to read data from the iCreate properly and the system grinds to a halt. I switched it over to a wired network and got all 10 running great with a peak network bandwidth of 9KBps, which isn't really that much. Is there something specific to the turtlebot_node that struggles with message latency or wifi in general?

Right now my alternatives are:

  1. rewrite the turtlebot_node to make it more tolerant of infrequent message
  2. combine all the nodes on each turtlebot using nodelets
  3. reorganize the system as a multi-master network, with one master on each turtlebot
edit retag flag offensive close merge delete

Comments

Hi, how are they running in the same network? Are they running independently or they can share topics?

Rafael gravatar imageRafael ( 2013-06-24 12:10:08 -0500 )edit

I'm quite certain that it is possible to run 4 or more turtlebots together, the question is does the stock turtlebot_node need to modified or the network/ros configuration. Right now all of the turtlebots are using a single ros master, which is running on my desktop machine.

andrewlybarger gravatar imageandrewlybarger ( 2013-06-26 07:18:11 -0500 )edit

Thanks Andrew, I have a question setup regarding how to do that single ros master multi-robot config. I would be very grateful if you could please take a look at it and give me an idea of how you got this to work. I tried it with namespaces following a suggestion here but it has been a dead end.

Rafael gravatar imageRafael ( 2013-06-26 10:13:00 -0500 )edit

1 Answer

Sort by ยป oldest newest most voted
0

answered 2013-06-20 10:49:16 -0500

tfoote gravatar image

I suggest that you debug a little bit deeper into the root cause. I know of demos with 4 or more TurtleBots on the same wireless network.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

2 followers

Stats

Asked: 2013-06-20 10:01:14 -0500

Seen: 253 times

Last updated: Jun 20 '13