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I try to connect VLP-16 to indigo in four ways, but all failed and led to the same result (no data was printed through command "rostopic echo /velodyne_points" and "rostopic echo /velodyne_packets"):

First method, refer to tutorial about VLP-16 http://wiki.ros.org/velodyne/Tutorial...

1 Access the Gnome Menu (Super key), type "Networks Connections" then run it.

2 Select the connection's name and click on "edit".

3 Choose the IPV4 Settings tab and change the “Method” field to "Manual". Set as below, according to http://answers.ros.org/question/23599... :

Is the setting correct?

4 sudo ifconfig eth0 192.168.3.100

5 I don't what it means in tutorial: "Add a static route to the LIDAR's IP address. The IP address can be found on the CD case which was included with the LIDAR. sudo route add 192.168.XX.YY eth0", since I don't have a CD. What should XX and YY be? Or can I skip this step?

Second method:

1 sudo route add 192.168.1.201 eth0 (Without turning off wire and change the settings in "Network Connections")

Third method:

1 sudo ifconfig eth0 192.168.1.77 (Without turning off wire and change the settings in "Network Connections")

Fourth method: 1. sudo ifconfig eth0 192.168.1.77

1. sudo route add 192.168.1.201 eth0

After any of the methods,

I applied:

$ roscore

change to the correct workspace

$source devel/setup.bash

$ roslaunch velodyne_pointcloud VLP16-points.launch

Then, $ rostopic echo /velodyne_points

$ rostopic echo /velodyne_packets

no data was printed from any command above

Or

rosrun rviz rviz -f velodyne

After open the interface: "No tf data. Actual error: Fixed frame [velodyne] doesn't exist"

So, what's wrong with the connection to VLP 16? Can you provide me with a detailed and correct way to connect VLP 16 to indigo (Don't mention the tutorial. It is based on HDL-32E)?

Thanks for you all!

Under Ubuntu 14.04, indigo, My situation now is:

      sudo ifconfig eth0 192.168.1.77

(in new ternimal)

      roscore

(in new terminal)

      cd ./catkin_ws  
  source devel/setup.bash
  roslaunch velodyne_pontcloud VLP16_points.launch

in new terminal:

 rostopic echo /velodyne_points     However, there is no data printed.
 rostopic echo /velodyne_packets   It is said:"Cannot load message class for [velodyne_msgs/VelodyneScan]. Are your mess ages bulit?"

Whether I powered and connected the lidar to my computer or not, there seems to be no difference in the results above.

I think this means the velodyne lidar wasn't connected to linux OS. Is it true?

Therefore, how to connect VLP-16 velodyne to indigo? How to connect the lidar with my computer through the ethernet? I only need to power the lidar and connect the lidar to my computer by the Ethernet line, and I don't need to do anything else? For example, I need to turn off wifi or change some network settings in my linux system?

OK, thanks very much.

Do you mean that generally two ros machines can be only connected through wifi?

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How to connect VLP-16 (confused about the tutorial) I try to connect VLP-16 to indigo in four ways, but all failed and l

I have the same problem. I cloned the latest source from github as http://answers.ros.org/question/226594/how-do-i-build

It doesn't make any difference. Still no data is published

How to connect VLP-16 velodyne to indigo? Under Ubuntu 14.04, indigo, My situation now is: sudo ifconf