cansend can0 121#0100000000000000
source devel/setup.bash
sudo chmod 666 /dev/ttyUSB0
rosrun tracer_bringup bringup_can2usb.bash
roslaunch tracer_bringup tracer_robot_base.launch
roslaunch tracer_bringup tracer_teleop_keyboard.launch
source devel/setup.bash
roslaunch rplidar_ros view_rplidar_a2m12.launch
rosbag record /odom -o odom_wheel.bag