Eric_ROS's profile - activity

Hello~ all

I create a docker to quickly setup ROS-indigo and Turtlebot packages on Ubuntu. I have Turtlebot PC and Remote PC. After testing, this docker works well on Remote PC to interact with Turtlebot PC. But unfortunately , if I run this docker on my Turtlebot PC, it's failed and shows some Error messages.

[ERROR] [1498784075.788970033]: Zeroconf: failed to create an avahi client.
zeroconf: client.c:785: avahi_client_get_state: Assertion `client' failed.
[zeroconf/zeroconf-13] process has died [pid 499, exit code -6, cmd /opt/ros/indigo/lib/zeroconf_avahi/zeroconf      
__name:=zeroconf __log:=/root/.ros/log/ae0eabf0-5d2e-11e7-a39a-0242ac110001/zeroconf-zeroconf-13.log].

does anybody know how to solve this ?? Thank you

After running "roslaunch turtlebot_bringup minimal.launch", the error message is shown as follows:

auto-starting new master
process[master]: started with pid [322]
ROS_MASTER_URI=http://172.17.0.1:11311

setting /run_id to ae0eabf0-5d2e-11e7-a39a-0242ac110001
process[rosout-1]: started with pid [335]
started core service [/rosout]
process[robot_state_publisher-2]: started with pid [353]
process[diagnostic_aggregator-3]: started with pid [354]
process[mobile_base_nodelet_manager-4]: started with pid [355]
process[mobile_base-5]: started with pid [356]
process[bumper2pointcloud-6]: started with pid [357]
process[cmd_vel_mux-7]: started with pid [358]
process[turtlebot_laptop_battery-8]: started with pid [359]
process[capability_server-9]: started with pid [360]
process[app_manager-10]: started with pid [421]
process[master-11]: started with pid [436]
process[interactions-12]: started with pid [468]
process[zeroconf/zeroconf-13]: started with pid [499]

[ERROR] [1498784075.788970033]: Zeroconf: failed to create an avahi client.

zeroconf: client.c:785: avahi_client_get_state: Assertion `client' failed.


[zeroconf/zeroconf-13] process has died [pid 499, exit code -6, cmd /opt/ros/indigo/lib/zeroconf_avahi/zeroconf      
__name:=zeroconf __log:=/root/.ros/log/ae0eabf0-5d2e-11e7-a39a-0242ac110001/zeroconf-zeroconf-13.log].
log file: /root/.ros/log/ae0eabf0-5d2e-11e7-a39a-0242ac110001/zeroconf-zeroconf-13*.log

hello~ I create a docker which includes: 1. ROS indigo full installed version 2. turtlebot package After finishing the

can not roslauunch Turtlebot in Docker container Hello~ all I create a docker to quickly setup ROS-indigo and Turtlebot

Hello~tfoote Now I installed Ubuntu 16.04 and ROS-kinetic on Nvidia TX1 successfully. I tried to install turtlebot packages on it and type:

wstool init src https://raw.githubusercontent.com/turtle bot/turtlebot/kinetic/turtlebot.rosinstall -j8

=====================================================================

Exception caught during install: Error processing 'yocs_msgs' : [yocs_msgs] Checkout of https://github.com/yujinrobot/yocs_ms... version indigo into /home/ubuntu/program_files/nvidia/tx1/install/8_turtlebot_packages/kinect/turtlebot/turtlebot/src/yocs_msgs failed.

ERROR in config: Error processing 'yocs_msgs' : [yocs_msgs] Checkout of https://github.com/yujinrobot/yocs_ms... version indigo into /home/ubuntu/program_files/nvidia/tx1/install/8_turtlebot_packages/kinect/turtlebot/turtlebot/src/yocs_msgs failed.

=====================================================================

I tried it again, but the error is still occurred.

Before doing this, I tried to do turtlebot source installation as 1.3 steps: http://wiki.ros.org/turtlebot/Tutoria...

Some errors shows while installing Kobuki... The reason seems my gazebo is v7(too new???) which has diff function name to support kobuki's build.

Not sure how to do for next, need your suggestion and command. Thank you!! :)

Hello~ all

I just followed jetsonhacks tutorial to install ROS-kinetic on my Nvidia TX1 successfully. Then git clone git clone link text to install Microsoft Kinect V1 Driver. The steps is as follows:

$mkdir ~/kinectdriver 
$cd ~/kinectdriver 
$git clone https://github.com/avin2/SensorKinect/tree/master
$cd SensorKinect/Bin/
$tar xvjf SensorKinect093-Bin-Linux-x64-v5.1.2.1.tar.bz2
$cd Sensor-Bin-Linux-x64-v5.1.2.1/
$sudo ./install.sh

To test Kinect, I do these on different Terminal to show Depth Image:

1. roscore
2. roslaunch openni_launch openni.launch
3. rosrun image_view image_view image:=/camera/rgb/image_color (<- RGB image shows successfully )
4. rosrun image_view image_view image:=/camera/depth/image (<- Failed to show depth)

And an error occured with this info:

[ERROR] [1480065718.281091328]: Unable to convert '32FC1' image for display: 'cv_bridge.cvtColorForDisplay() while trying to convert image from '32FC1' to 'bgr8' an exception was thrown ([32FC1] is not a color format. but [bgr8] is. The conversion does not make sense)'

It looks like some problems of pixel format conversation. I google this and know the solution is to modify code. But the method is not clean... Anyone knows how to fix it?

Thank you!!

the solution link is link text

Hello~ all I also have the same problems to install Turtlebot packages on ROS-kinetic. I followed instruction to install turtlebot deb by replacing indigo to kinetic. but still some errors there...

Any obvious solution for this ? thank you!

Hello~ all Recently I do some research about Robot Navigation. I'd like to find a way to save new map updated by Local Plan(Scan) while doing navigation. I found a interesting parameter "Rolling Window"...but no idea how to use it. Just know the definition as follows

http://wiki.ros.org/costmap_2d

~<name>/rolling_window (bool, default: false) Whether or not to use a rolling window version of the costmap. If the static_map parameter is set to true, this parameter must be set to false.

If "Rolling Window" is a parameter that user can do navigation and discover unknown area. Then we might can find some way to save the updated map. I tried to killl "amcl" node and run "slam_gmapping" independently. But...it's still failed cuz all new scanned info & static map will be cleaned.

Please share if you know... (1) what's the correct meaning of "rolling window" and how to use it (2) how to successfully saved new scanned info as a map file

Appreciation :)

Thanks for your sharing!! hector_slam is interesting!!

Thanks for your sharing!!

Thanks for your reply, Hector SLAM seems a great package for learning.

Hello~ all I'm a starter to learn ROS. Now I focus on Navigation and map generation.

We know that autonomous navigation procedure is : Load map files(yaml & PGM files) => Localization(amcl) => User assigns the goal => Plan an ideal route (global planner+costmap) => obstacle avoidance (Local Planner+costmap) => Reached!!

It means we have to build a map beforehand, then we can do autonomous navigation. I'd like to know... (1) Is it possible to immediately update map if robot found a new obstacle not showed on the static map?

(2)is it possible to do autonomous navigation and build map at the same time. I mean...generate a small part of map and keep updating it to RObot for navigation?

I searched the forum and found the related article as follows, seems not available my request. http://answers.ros.org/question/37486...

Does anyone know about it? It would be better to give me some idea or suggestion.

Thanks