平台要求（Platform）: Ubuntu 18.04 + ros-melodic-desktop-full 某些章节的应用可能对电脑的性能要求较高（Some chapters may require a computer with sufficient computing power.）
Chapter 1: Make a indoor autonomous mobile robot.
Chapter 2: Make a outdoor line-tracking mobile robot.
Chapter 3: Velodyne-16 && Lego_LOAM 3D Mapping.
Chapter 4: Simulation of Automatic Obstacle Avoidance Based on Three-channel Ultrasonic.
Chapter 5: Send the Goal to navigation through the ROS node (C++ && Python).
Chapter 6: Hector_mapping
Chapter 7: rf2o_laser_odometry && gmapping
Chapter 8: Velodyne-16 && lio_sam 3D Mappig
Related folders（相关目录）:
mini_sim18_ws && original_neor_mini
Related folders（相关目录）:
calib_camera
Related folders（相关目录）:
Object_detection && Distence
Related folders（相关目录）:
Neor_min_ROS_Tutorials
Developing Environments:
ubuntu 18.04 + ROS Melodic desktop full Explaination:
mini_sim18_ws # this folder is ROS Workspace, you can run launchs and look at every demo.
original_neor_mini # this folder is an original neor_mini urdf file, you can construction by yourself
pictures # the total process picturesNeor mini Simulation in Gazebo with ROS, Follow below steps:
Step 1:
# open your Terminal
git clone https://github.com/COONEO/neor_mini.git
cd neor_mini/mini_sim18_ws
rosdep install --from-paths src --ignore-src -r -y # you need wait a moment
# first see the below tips .
catkin_make # if failed,please retry again and againif "catkin_make " error,please install the dependencey of lego_loam(See chapter 3) and lio_sam(See chapter 8). or remove LeGO-LOAM && lio_sam folder.
You can see 5 ROS packages in mini_sim18_ws/src folder,lists:
neor_mini # Storing the description of neor mini's appearance with urdf file
steer_drive_ros # Ackermann kinematics ROS plugins
steer_mini_gazebo # Storing the launch files of neor mini model visual in Gazebo
mini_gmapping # Storing the launch files and gmapping params files
mini_navigation # Storing the launch file and navigation params filesStep 2: launch neor_mini's launch file, visualize the urdf in Rviz.
# show the neor_mini.urdf in Rviz
cd ~/neor_mini/mini_sim18_ws
source devel/setup.bash
roslaunch neor_mini display.launch
#show the neor_mini_gazebo_sensors.urdf in Rviz
cd ~/neor_mini/mini_sim18_ws
source devel/setup.bash
roslaunch neor_mini display_gazebo_sensors.launch
Step 3: launch steer_mini_gazebo's launch file. visualize the urdf in Gazebo and try to control neor_mini .
#show the neor_mini_gazebo.urdf in Gazebo
cd ~/neor_mini/mini_sim18_ws
source devel/setup.bash
roslaunch steer_mini_gazebo steer_mini_sim.launch
#show the neor_mini_gazebo_sensors.urdf in Gazebo
cd ~/neor_mini/mini_sim18_ws
source devel/setup.bash
roslaunch steer_mini_gazebo steer_mini_sim_sensors.launch
Step 4 : Gmapping with neor_mini urdf
# launch gmapping_steer_mini_sim.launch file and construction map
cd ~/neor_mini/mini_sim18_ws
source devel/setup.bash
roslaunch mini_gmapping gmapping_steer_mini_sensors.launch
When you think the construction map is finished, Open a new terminal, you can run the below command to save the map.
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
cd src/mini_gmapping/map
rosrun map_server map_saver -f cooneo_office_map # You can saved as another nameStep 5 : Using cooneo_office_map to make a navigation demo.
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
roslaunch mini_navigation navigation_steer_mini_sensors.launch # start a navigation demo
When you run up the list launch file, your monitor will show two windows, one is Rviz, another is Gazebo. looking at the rviz window up toolbar, you need to click "2D Nav Goal", and select a navigation goal on the map, soon the neor_mini model car will plan a route, and arrived.
step 1 : Copy Gazebo-world from neor_mini_linetrack/models folder
# open a Terminal
cp -r ~/neor_mini/mini_sim18_ws/src/neor_mini_linetrack/models/* ~/.gazebo/models/and you will see four new folder in your ./gazebo/models folder as follows:
Step 2 : launch neor_mini_linetrack package launch file
# open a Terminal
cd ~/neor_mini/mini_sim18_ws/
catkin_make # compile you all ros node in you workspace
source devel/setup.bash
roslaunch neor_mini_linetrack neor_mini_linetrack_day.launchand you will see:
Step 3: rosrun line-tracking python node
# open a Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
# may need to add permission to .py file
sudo chmod +x src/neor_mini_linetrack/scripts/line_follower_object.py # same as hsv_color_select.py file
rosrun neor_mini_linetrack line_follower_object.pyand you will see four new windows ,it's like this:
Congratulations!!! you will see the neor_mini urdf model running automatically using the data from the camera.
Ps. select your own hsv color
When your running result is different from the above, you can select the hsv color range suitable for you.
Lego_loam url: https://github.com/RobustFieldAutonomyLab/LeGO-LOAM
#open a Terminal.
wget -O ~/Downloads/gtsam.zip https://github.com/borglab/gtsam/archive/4.0.0-alpha2.zip
cd ~/Downloads/ && unzip gtsam.zip -d ~/Downloads/
cd ~/Downloads/gtsam-4.0.0-alpha2/
mkdir build && cd build
cmake ..
sudo make install
# copy the libmetis.so library into /usr/lib/ folder. !!!!!!!
sudo cp /usr/local/lib/libmetis.so /usr/libStep 1: launch velodyne_simulator ROS package,and you will see:
# open a Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
# launch VLP-16
roslaunch velodyne_description velodyne_16.launch
Step 2: Install the Velodyne-16 on the neor_mini
# open a Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
# start launch file and see neor_mini + vlp-16 in Rviz
roslaunch neor_mini display_gazebo_sensors_VLP16.launch
Step 3: launch the neor_mini+vlp16 model in Gazebo
# open a Terminal and add the museum model world into Gazebo's model folder
cp -r ~/neor_mini/mini_sim18_ws/src/neor_mini/models/* ~/.gazebo/models/
# open a Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
# start launch file and see neor_mini + vlp-16 in Gazebo
roslaunch steer_mini_gazebo steer_mini_sim_sensors_VLP16.launch 
(Gazebo from: iscas_museum.world )
Step 4: Record the data collected by VLP-16 in Gazebo
# open a Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
roslaunch steer_mini_gazebo steer_mini_sim_sensors_VLP16.launch
# open another Terminal and record VLP-16 data By rosbag
cd ~/neor_mini/mini_sim18_ws/
rosbag record -a
# and then, control the neor_mini traverses the iscas_museum world
Step 5: Play the Record data && Mapping by Lego_Loam
# open a Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
roslaunch lego_loam run.launch
# open another Terminal and "cd" in your bag file folder
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash
rosbag play ####.bag # replace with your own or current bag file's name
# and then,you will see mapping by Leog_loam
Congratulations!!! You can run Velodyne-16 Lidar in Gazebo with neor_mini and Mapping by Lego_Loam.
The Lego_loam ROS Package from The RobustFieldAutonomyLab.
@inproceedings{legoloam2018,
title={LeGO-LOAM: Lightweight and Ground-Optimized Lidar Odometry and Mapping on Variable Terrain},
author={Shan, Tixiao and Englot, Brendan},
booktitle={IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
pages={4758-4765},
year={2018},
organization={IEEE}
}
step 1: Visualization of neor_mini after adding an ultrasonic sensor.
# open a Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash # if failed,please catkin_make all packages
# launchUltrasonars sensors
roslaunch neor_mini display_gazebo_sensors_ultrasonars.launch
step 2: Start ultrasonic obstacle avoidance simulation in Gazebo (Stop step one)
# open one Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash # if failed,please catkin_make all packages
roslaunch steer_mini_gazebo steer_mini_sim_sensors_ultrasonars.launch 
# open another Terminal
cd ~/neor_mini/mini_sim18_ws/
source devel/setup.bash # if failed,please catkin_make all packages
# launch the ultra_avoid_obstacle node
roslaunch ultra_avoid_obstacle ultra_avoid_obstacle_node.launch 
Congratulations!!!
Step 1 : launch mini_navigation launch file.
# open a terminal
cd ~/neor_mini/mini_sim18_ws
catkin_make
source devel/setup.bash
roslaunch mini_navigation navigation_steer_mini_sensors.launch
Step 2 : rosrun the send_goals ROS node. (C++ ROS node)
# open another terminal "ctrl + shift +t" (Recommend)
source devel/setup.bash
rosrun send_goals send_goals_node
Step 3 : rosrun the send_goals_python.py file (Python ROS node)
# open another terminal "ctrl + shift +t" (Recommend)
source devel/setup.bash
sudo chmod 0777 src/send_goals/scripts/send_goals_python.py
rosrun send_goals send_goals_python.py
Congratulations!!!
Corresponding WeChat article
Step 1 : launch hector_mapping.launch
# # open a terminal
cd ~/neor_mini/mini_sim18_ws
rosdep install --from-paths src --ignore-src -r -y # you need wait a moment
catkin_make
source devel/setup.bash
roslaunch mini_gmapping hector_mapping.launch
Congratulations!!!
Details paper:
@INPROCEEDINGS{KohlbrecherMeyerStrykKlingaufFlexibleSlamSystem2011,
author = {S. Kohlbrecher and J. Meyer and O. von Stryk and U. Klingauf},
title = {A Flexible and Scalable SLAM System with Full 3D Motion Estimation},
year = {2011},
month = {November},
booktitle = {Proc. IEEE International Symposium on Safety, Security and Rescue Robotics (SSRR)},
organization = {IEEE},
}Corresponding WeChat article
Step 1 : Find neor_mini_gazebo_sensors.urdf file, and replace the lidar scan frequency with 5.
# the detiles blow: cd neor_mini/mini_sim18_ws/src/neor_mini/urdf && vim neor_mini_gazebo_sensors.urdf
...
<gazebo reference="laser_link">
<sensor type="ray" name="Top_laser_sensor">
<visualize>false</visualize> <!-- visual or unvisual laser ray :true or false-->
<update_rate>40</update_rate> <!-- 默认是 40，修改为 5 Hz -->
...Step 2 : Find the steer_mini_sim_sensors_with_other_world.launch , and replace the world file with "cooneo_rooom2.world"
# cd neor_mini/mini_sim18_ws/src/steer_mini_gazebo/mini_gazebo/launch
# vim steer_mini_sim_sensors_with_other_world.launch
<!--Load the surrounding environment into Gazebo-->
<include file="$(find gazebo_ros)/launch/empty_world.launch" >
<arg name="world_name" value="$(find neor_mini)/worlds/cooneo_room2.world"/>
</include>
...Step 3 : launch rf2o_laser_odometry and gmapping node.
#open a terminal
cd ~/neor_mini/mini_sim18_ws
rosdep install --from-paths src --ignore-src -r -y # you need wait a moment
catkin_make
source devel/setup.bash
roslaunch mini_gmapping laser_odom_gmapping.launch
Congratulations!!!
Thinks for MAPIRlab/rf2o_laser_odometry !!!
Step 1 : install the dependence of the lio_sam，follow as below:
· gtsam(Georiga Tech Smoothing and Mapping library)
sudo add-apt-repository ppa:borglab/gtsam-release-4.0
sudo apt update
sudo apt install libgtsam-dev libgtsam-unstable-devor see the lio_sam git.
https://github.com/TixiaoShan/LIO-SAM.gitStep 2 : recording the vlp-16 && imu data in Gazebo By rosbag .
# open a new Terminal
cd neor_mini/mini_sim18_ws/
catkin_make
source devel/setup.bash
roslaunch steer_mini_gazebo steer_mini_sim_sensors_VLP16_lio_sam.launch
# open another Terminal
rosbag record -a
# moving the neor_mini by rqt_robot_steering plugines.this step is same as the chapter 3 .
Step 3: play your recording bag ,and run lio_sam to 3D-Mapping.
# open a new Terminal
cd neor_mini/mini_sim18_ws/
catkin_make
source devel/setup.bash
roslaunch lio_sam run_neor_mini.launch
#open another terminal
cd your_bag_saved_folder
rosbag play -r 5 yourbag_name.bag
@inproceedings{liosam2020shan,
title={LIO-SAM: Tightly-coupled Lidar Inertial Odometry via Smoothing and Mapping},
author={Shan, Tixiao and Englot, Brendan and Meyers, Drew and Wang, Wei and Ratti, Carlo and Rus
Daniela},
booktitle={IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
pages={5135-5142},
year={2020},
organization={IEEE}
}Thank you very much for Tixiaoshan && iscas_museum.
our new Arduino Ackermann ROS CAR.
2022.04.17
author:ZhaoXiang Li && COONEO
COONEO Co.,Ltd
Web:http://cooneo.cc
For more details,you can search "COONEO" in your WeChat.
For more tutorials'video, please search "COONEO" in your Bilibili App.
