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cd ~/(your_work_space)/src git clone https://github.com/ros-drivers/velodyne.git -b melodic-devel cd .. catkin_make --only-pkg-with-deps velodyne You can use this ...

I wanted to build a sensor to determine the state of my garage door—open or closed—and send that state to Home Assistant so I can display the status in a dashboard and build automation from it (e.g.