Arduino GaltonBoard prototype

GITGOFP:
quick'n'dirty proof of concept
of a Galton Board with marbles.
en.wikipedia.o...
An Arduino is connected to:
control release of marble via servo;
read result via 2 microswitches
send info to host computer via Serial port where the result is announced as sound.
see flockr for still pictures:
www.flickr.com...
ToDos:
make microswitches trigger better
avoid lockups of ball on the way: steeper slope!