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Early prototype
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Well, it kinda worked.
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A working prototype, with clamps.
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Clamped in.
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Piezo assembly mounted in a prototype.
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Drum trigger piezo assembly
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Blurry and mounted
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Parts
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Small piezo element
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Pipe cap, with 1/4" hole
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Wired it up
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In the tube
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Ready to assemble
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Screwing in the piezo
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Painted and rubberized
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wrapping in rubber
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Mounting
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Trigger tree
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Everything affixed