What do soup cans, gum balls, and eggs have in common? Well, besides being round, they’ve all been used to trigger programmable drum machines:
The Drum Buddy
Triggered by light shining through holes in a large aluminum can.
Bubblegum Sequencer
Triggered by colored gum balls placed on a grid.
“Almost Certified”
Cumputer sequencer triggers hammers that hit various sized eggs… for some reason.
http://www.machineproject.com/kcain_bcrabtree/almostcertified/video/almostcertified.mov
