Hubcap is a fairly simple metronome named in honor of Dan Lynch from the Linux Outlaws. The application gives both auditory and visual feedback to the user when there is a beat. There is a README included with the source; I suggest reading it.

The slider in the interface will allow the user to set the beats/minute of the metronome and the large black square will flash white in sync with the beat.

TODO: set a default icon for the application. Find a better way to handle execution of timed events in Vala.