遇到问题：
Errors << servo_move_keyboard:cmake /home/ubuntu/spotmicro/logs/servo_move_keyboard/build.cmake.000.log
CMake Warning at /opt/ros/kinetic/share/catkin/cmake/catkinConfig.cmake:76 (find_package):Could not find a package configuration file provided by "i2cpwm_board" withany of the following names:i2cpwm_boardConfig.cmakei2cpwm_board-config.cmakeAdd the installation prefix of "i2cpwm_board" to CMAKE_PREFIX_PATH or set"i2cpwm_board_DIR" to a directory containing one of the above files. If"i2cpwm_board" provides a separate development package or SDK, be sure ithas been installed.
Call Stack (most recent call first):CMakeLists.txt:10 (find_package)
CMake Error at /opt/ros/kinetic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):Could not find a package configuration file provided by "i2cpwm_board" withany of the following names:i2cpwm_boardConfig.cmakei2cpwm_board-config.cmakeAdd the installation prefix of "i2cpwm_board" to CMAKE_PREFIX_PATH or set"i2cpwm_board_DIR" to a directory containing one of the above files. If"i2cpwm_board" provides a separate development package or SDK, be sure ithas been installed.
Call Stack (most recent call first):CMakeLists.txt:10 (find_package)
...............................................................................
Failed << servo_move_keyboard:cmake [ Exited with code 1 ]
Failed <<< servo_move_keyboard [ 12.1 seconds ]
Abandoned <<< spot_micro_launch [ Unrelated job failed ]
Abandoned <<< spot_micro_motion_cmd [ Unrelated job failed ]
Abandoned <<< spot_micro_plot [ Unrelated job failed ]
Abandoned <<< spot_micro_rviz [ Unrelated job failed ]
Finished <<< spot_micro_joy [ 14.2 seconds ]
Finished <<< spot_micro_keyboard_command [ 13.6 seconds ]
Finished <<< lcd_monitor [ 15.5 seconds ]
[build] Summary: 4 of 9 packages succeeded.
[build] Ignored: None.
[build] Warnings: None.
[build] Abandoned: 4 packages were abandoned.
[build] Failed: 1 packages failed.
[build] Runtime: 26.5 seconds total.
[build] Note: Workspace packages have changed, please re-source setup files to use them.
最后发现Mike这位同学确实缺少了这个包，他放了一个文件夹但是里面 是 空 的！！！
在github的项目网站上面可以查看到此处ros-i2cpwmboard文件夹下面是一个空文件。
想要知道是否是空文件只要双击它：双击能进去看到它的下属目录，就不是空文件夹；双击进不去，就是空文件夹。
因此我单独去下载了 i2cpwmbooard for ros-kinetic, 并补充在缺少的位置，再次运行就OK了。
这次失败得到的教训是，要自己下载好整理好，再上传到树莓派上运行，不然只能根据报错一行一行一处一处的找原因。
希望各位遇到同样缺包的问题时，先去自查一下是否真的缺少这些包（物理），然后再去检查是否缺少这些包的链接或是放置位置错误。
祝大家 ~ 头发多多，BUG少少 ~ ！