Following instructions for building the motor driver on ROS melodic:

cd ~/catkin_ws/src/
git clone https://github.com/johnkok/ros_odrive
cd ~/catkin_ws
catkin_make

 After compiling the driver we are ready to start the new node:

cd ~/catkin_ws
source ./devel/setup.bash
roscore & # Start ROS core if it is not running
rosrun ros_odrive ros_odrive _od_sn:="0x2054306D594D"

Optionally we can also pass the configuration Json file if it is required:

rosrun ros_odrive ros_odrive _od_sn:="0x2054306D594D" _od_cfg:="~/catkin_ws/src/ros_odrive/cfg/odrive_5pole.json"