数梅派链接arduino出现Permission denied: '/dev/ttyUSB0'错误解决

所有错误信息:html pi@pi:~$ roslaunch ros_arduino_python arduino.launch ... logging to /home/pi/.ros/log/21167e0a-74bf-11e7-b0e3-b827ebc62e10/roslaunch-pi-5106.log Checking log directory for disk usage. This
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