I made this because GrubWerm, who needed to use his sustain pedal as a bass drum trigger, requested it. So, how does it work? You simply bind the sustain pedal to the "trigger" parameter and adjust the rest as you needed it. Now, if you press down the sustain pedal, you should hear one click, and nothing more. Before you can trigger it again, you have to pull it back behind the sensitivity value. Send the output through an LdC Trigger, and that's all.
It may also be useful for just generating clicks, and you can do interesting things if you combine it with a Jeskola Multiplier.