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July 2006, Issue 192

Precision Motion-Sensing System Analyzer
Philips ARM Design Contest 2005 Winner


The bucking dummy is a steel container that holds an internal timer, an RC release receiver, and an electromechanical release mechanism. Reverse engineering the bucking dummy revealed that all of the signals required by the Buckymeter were available on the timer’s wiring harness. Optoisolators were placed across the Start button and release signal to provide an interface to the 3-V Buckymeter. Start is a 12-V pulse that follows the state of a recessed button. Eject is a 12-V signal that grounds when the electromechanical release is triggered.