sparkfun Spectacle Sound Kit Hook-Up Manual page 6

For the Button board, there are five options: three which produce a
momentary pulse type output and two that produce a continuous switch
type output.
Action on press
Trigger an action when a button is first pressed, regardless of how long it is
subsequently held down.
• "When button number ... is pressed" - This is the number of the
button we wish to assign to this action. The button numbers are
printed on the board, and run from 0 through 8.
• "trigger channel number ..." - A single, momentary pulse will be
sent out on this channel. It is suitable for starting a sound, initiating a
motion, or setting the color of a light strip, but not for continuous
sound playback or for turning on a light strip effect, for instance.
Action on release
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