• clock skew detected

solve: (https://stackoverflow.com/questions/3824500/compiling-c-on-remote-linux-machine-clock-skew-detected-warning\)

• launch file

solve: (http://wiki.ros.org/roslaunch/XML/node\)

• when roslaunch the rosserial node, error message: unable to sync with device; possible link problem or link software version mismatch

solve: unplug

• rosserial custom message

(https://answers.ros.org/question/60991/rosserial-cannot-import-custom-messages-package/\)

• catkin build on Odroid if catkin build run out of memory:

  virtual memory exhausted: cannot allocate memory
  

  or

  c++ internal compiler error (program cc1plus)
  

  this is a problem of running out of memory use

  catkin build -j2
  

  to have 2 parallel jobs instead of default -j4 on Odroid.