http://chandong83.blog.me/220851270328
http://chandong83.blog.me/221009668897
http://chandong83.blog.me/221068884860
https://m.blog.naver.com/chandong83/221071279817
Ubuntu PC
# ros 시작 - roscore
$ roscore&
# ROS 시리얼 시작 - rosrun
# rosrun rosserial_python serial_node.py _port:=[Arduino ROS 시리얼 포트]
$ rosrun rosserial_python serial_node.py _port:=/dev/ttyUSB0
# 토픽 메시지 전송 - rostopic pub
# rostopic pub /servo std_msgs/UInt16MultiArray "{data: [서보1 각, 서보2 각, 서보3 각]}" --once
$ rostopic pub /servo std_msgs/UInt16MultiArray "{data: [90, 120, 120]}" --once
# 토픽 메시지 송신 - rostopic echo
$ rostopic echo /echo_hello
http://blog.naver.com/chandong83
https://answers.ros.org/question/87016/rosserial-multiple-publishers/