Pre-requisite Software Setup

The ROS driver for the robots is initially supported for the ROS Melodic. All of ROS related software should be installed in a remote PC/Rasberry Pi/Nvidia board that is onboard the robot. The robot ships either with Rasberry Pi or Nvidia board as an upgradation kit. The steps for shown below are for remote PC both boards usually come with pre-installed ROS distribution.

Note: All the ROS related software should be installed/run on remote PC/Rasberry Pi/Nvidia board, nothing needs to be installed on robots control board.

PC Setup

ROS Melodic installation requires Ubutnu 18.04 Bionic, Artful and supports macOS, Windows upto varying extent. But for this installation Ubuntu 18.04.x Bionic is recommended.

  1. Ubuntu 18.04 can be downloaded from here.
  2. The installation instruction for Ubuntu can be found here

ROS-Melodic Installation

The ros driver provided can be run either on a remote PC or on board robot computer. Therefore, ROS only needs to be installed on any one of them. Usually, the on board computer have already pre-installed ROS distribution, so below one will only be applicable to a remote computer. Run following commands to install ROS Melodic or you can simply follow the instructions.

  1. Enter the Ubuntu terminal and typie in the following command:
cd ..
  1. The next step is setting up the source list:
sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
  1. After which you will set up the keys:
sudo apt install curl
curl -s https://raw.githubusercontent.com/ros/rosdistro/master/ros.asc | sudo apt-key add -
  1. Then, you will install ROS-melodic:
sudo apt update
sudo apt install ros-melodic-desktop-full
  1. Finally, you will add ROS environment to your bash file, what this means is that each time you load up your terminal, it will automatically find the built-in ROS packages.
echo "source /opt/ros/melodic/setup.bash" >> ~/.bashrc
source ~/.bashrc

Once the ROS packages are set-up the next step would be to set up a workspace in which you can add pre-built packages to control your robot.

Catkin Workspace

  1. The first step is to ensure that you have correctly setup you ROS melodic. It can be checked by:
cd ..
source /opt/ros/melodic/setup.bash
  1. Next, install catkin_tools:
sudo apt-get install python3-catkin-tools
  1. The next step is to create, your workspace. This is typically created in the home directory following the standard ROS convention, once built, you should see a build and devel folder next to your src folder:
mkdir -p ~/catkin_ws/src
cd ~/catkin_ws/
catkin build
  1. To enable the workspace, you must type in:
source devel/setup.bash
  1. To avoid typing this everytime you start a terminal, you’ll add this into the last line of the bashrc file:
gedit ~/.bashrc
  • Add the following line at the end of the bashrc file:
source devel/setup.bash
  • Everytime you do a Catkin build it is necessary to either restart all your terminals, or source them.
  • To verify that everything is working correctly, type the following into the terminal:
echo $ROS_PACKAGE_PATH