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I'm trying to test out the follower example on my turtlebot. Everything seems to work fine, I start the follower app, the kinect comes on, then as soon as the motors move the kinect shuts off. Sometimes the robot will move a little bit before it shuts off. Other times it seems like the kinect is still running (red IR light is on) but the robot doesn't respond at all.

Here's what I get out of the follower app.

[kinect_laser-5] restarting process Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading'="" from="" '="" usr="" lib="" python2.7="" threading.pyc'=""> ignored process[kinect_laser-5]: started with pid [5010] [kinect_laser_narrow-6] restarting process Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading'="" from="" '="" usr="" lib="" python2.7="" threading.pyc'=""> ignored process[kinect_laser_narrow-6]: started with pid [5011] [openni_launch-3] process has died [pid 4984, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load openni_camera/OpenNINodelet openni_manager __name:=openni_launch __log:=/home/turtlebot/.ros/log/20535746-67f8-11e2-a10f-00242ca9ad17/openni_launch-3.log]. log file: /home/turtlebot/.ros/log/20535746-67f8-11e2-a10f-00242ca9ad17/openni_launch-3.log respawning... [openni_launch-3] restarting process Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading'="" from="" '="" usr="" lib="" python2.7="" threading.pyc'=""> ignored process[openni_launch-3]: started with pid [5094] [kinect_laser_narrow-6] process has died [pid 5011, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load pointcloud_to_laserscan/CloudToScan openni_manager cloud:=/cloud_throttled scan:=/narrow_scan __name:=kinect_laser_narrow __log:=/home/turtlebot/.ros/log/20535746-67f8-11e2-a10f-00242ca9ad17/kinect_laser_narrow-6.log]. log file: /home/turtlebot/.ros/log/20535746-67f8-11e2-a10f-00242ca9ad17/kinect_laser_narrow-6.log respawning... [kinect_laser_narrow-6] restarting process Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading'="" from="" '="" usr="" lib="" python2.7="" threading.pyc'=""> ignored process[kinect_laser_narrow-6]: started with pid [5140] [kinect_laser-5] process has died [pid 5010, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load pointcloud_to_laserscan/CloudToScan openni_manager cloud:=/cloud_throttled __name:=kinect_laser __log:=/home/turtlebot/.ros/log/20535746-67f8-11e2-a10f-00242ca9ad17/kinect_laser-5.log]. log file: /home/turtlebot/.ros/log/20535746-67f8-11e2-a10f-00242ca9ad17/kinect_laser-5*.log respawning... [kinect_laser-5] restarting process Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading'="" from="" '="" usr="" lib="" python2.7="" threading.pyc'=""> ignored process[kinect_laser-5]: started with pid [5152]

I've got a home made turtlebot. It's using a Create with an old laptop (2GHz Pentium). I'm trying to run the SLAM mapping tutorial which seems to be working fine but I run into a ton of lag while trying to drive around using the keyboard teleop. The robot will be unresponsive for several seconds to a minuet.

What I do is ssh from the workstation to the turtlebot laptop. I run the gmapping app in the ssh terminal. Then I start RViz on the workstation. In another terminal I ssh to the turtlebot and run the keyboard teleop.

I'm gathering the parts to build a turtlebot. I have a question about the gyroscope that's use on it though. I already have a board with a gyroscope on it from another project. The gyro I have talks through I2C. Would it be easy to use this one or should I just buy the same board that everyone else uses?

I'm just starting out so I'm not even sure where to find the code for the turtlebot that processes the gyro data.

I've followed the install tutorial several times but I keep getting the following error:

W: Failed to fetch http://packages.ros.org/ros/ubuntu/dists/precise/Release Unable to find expected entry '/etc/apt/sources.list.d/ros-latest.list/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)

I'm trying to make a map using the kinect of a small room. This is a home-built turtlebot that doesn't have a gyroscope. I've set the had_gyro parameter to false. I've calibrated the linear and angular rate so I know that isn't a problem. When I try to run gmapping and watch the map being built with rviz I can see that the odometry is way off. I can drive the robot straight and the robot on rviz will be turning. In fact it always turns in one direction (clockwise). Even if I turn the robot in the other direction it will still turn clockwise. I recorded a bag file of this happening if anyone thinks that might help. You can download it here

https://drive.google.com/file/d/0B-Gb9ZyyCz5_MGtWS1NhcFNLeWs/edit?usp=sharing

Thanks. I actually was testing it again today before I saw your comment so I don't have any output right now. I connected the workstation and turtlebot directly to my router to see if the network was a problem and it works much better now. I'll try lowering the resolution now too.

The turtlebot has a dual intel atom 1.86Ghz processor. The workstation I'm worried about. It's an acer laptop with an AMD triple core at 2.1Ghz. I've tried it on two networks both seem to give the same result. I do have an unused router that I could use to set up a network just for turtlebot.

I'm trying to get ccny_rgbd working on a turtlebot. It seems to be kind of working but I think it's still not quite working as it should.

On the turtlebot I launch:

roslaunch ccny_openni_launch openni.launch publish_cloud:=true

I get a complaint in the terminal about a missing camera calibration file but it still seems to run anyway.

Then on the workstation I launch:

roslaunch ccny_rgbd vo+mapping.launch

I run the corresponding rViz config file. At this point I did get a rgbd image in rViz but it takes a very long time, several minutes. I left it running for a while and it did update the rgbd image but the update rate was very slow. Again several minutes per image. Other times it doesn't give me the rgbd image at all after waiting up to 10min. I'm sure this isn't normal but I'm not really sure where to ever start at trying to fix it. Maybe my computer is just too slow for this?

I also tried to record a bag file to try and process the data later but ran into a problem with the TF data being old. Not sure what's going on there either. It seems to run fine when I'm not trying to record the bag file.

Thanks, I got octomap mapping now. I'm running into the same catkin error when I try to install octomap though.

I'm running into some problems installing rgbdslam on my turtlebot. I followed the instructions on the wiki (http://www.ros.org/wiki/rgbdslam).

When I try to install with (rosdep install rgbdslam_freiburg) I get the error

ERROR: Rosdep cannot find all required resources to answer your query Missing resource octomap

I already installed octomap with (sudo apt-get install ros-fuerte-octomap) but it still gives me this error.

UDATE I deleted rgbdslam and started over. Now it have the octomap working but getting a new error

ERROR: the following packages/stacks could not have their rosdep keys resolved to system dependencies: rgbdslam: Missing resource catkin

I can roscd to catkin and the path is in the ROS_PACKAGE_PATH so I'm not sure what's going on.

I got it working, somehow. Not sure what, if anything, I did though. I have trouble now though with losing the network connection. Shortly after the workstation gets the camera image it just freezes and I can't ssh to the robot anymore.

I run

rostopic echo /camera/rgb/image_raw

And I never get any response back from the terminal. But at the same time if I do

rosrun image_view image_view image:=/camera/rgb/image_color

I can see the camera image.

I've checked that I can communicate to the turtlebot and from the turtlebot to the workstation. On the workstation, I can check rostopic list and the see camera topic that I want to use. If I try to see the camera image in RViz nothing shows up but it also shows that the topic is there.

If I go onto the turtlebot laptop I can use RViz to see the camera without any problems.