install ros
http://wiki.ros.org/noetic/Installation/Ubuntu
sudo apt install -y python-rosdep
sudo apt-get install libi2c-dev
cd <your_ws>/src
git clone --recursive https://github.com/chvmp/champ
git clone https://github.com/chvmp/champ_teleop
cd ..
rosdep install --from-paths src --ignore-src -r -y
cd <your_ws>
catkin_make
source <your_ws>/devel/setup.bash