I hot glued 3 Piezo’s into Dasani water bottle caps (which helps to dampen the sound) and then glued them under the plywood lid where my foot would be tapping. I also hot glued the wires to the side of the box and just at the bottom end of the box so as not to effect the sound. I located the top two Piezo Disks about where the ball of my foot would hit, with the 3rd piezo a little lower than the top 2 (kind of forming a tri-angle – this is how Shane did his).
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