Robotic-Nano-Degree-Project-4

Description

• This is the fourth project of the Robotics udacity nano-degrees.
• The robot is able to navigate the environment and draw 3d point clound and 2d occupency grid maps using rtabmap ros package.

Prerequistes

• Udacity Robond virtual machine running on VMWare Player

Building

# Create the workspace
mkdir -p ~/catkin_ws/src
cd  ~/catkin_ws/src
# Clonning the Repo
git clone git@github.com:RemonComputer/Robotic-Nano-Degree-Project-4.git 
cd ..
# Compiling the packages
catkin_make

Running

• Open the first terminal to launch the robot package (and launch the robot in the simulation & Rviz).

cd ~/catkin_ws
source ~/catkin_ws/devel/setup.bash
roslaunch my_robot world.launch

• Open another terminal to run the mapping node

cd ~/catkin_ws
source ~/catkin_ws/devel/setup.bash
roslaunch my_robot mapping.launch

• Open another terminal and run the keyboard_teleop_package

cd ~/catkin_ws
source ~/catkin_ws/devel/setup.bash
roslaunch my_robot teleop.launch

What to expect

• Slowly take a tour in the environment and make closed cycles, you will notice that the grid map is being drawn along with some loop closure constrains is been detected.
• After taking a tour you will notice that your map is saved to ~/.ros/rtabmap.db
• You can examine this map database using rtabmap-databaseViewer ~/.ros/rtabmap.db
• Here is the rtabmap.db database so you can examine it.

Screenshots

figure 1: Updated robot and environment
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figure 2: RTabmap Database viewer showing samples from the resulted database.