http://www.nienlam.com/itp-blog/2009/10/06/stupid-pet-trick-revisited-%e2%80%93-photo-sensor-tone-generator-the-digital-way/ The sights and sounds of my work at ITP Tue, 24 Nov 2009 05:54:05 +0000 hourly 1 http://wordpress.org/?v=3.0