I built my hangman with a wiper motor, but don't have any detailed instructions or pics. I used one of those 5 gal buckets from Home Depot and mounted the wiper motor in the center about 1/3 down from the top. There is an arm off the wiper motor toward the outside of the bucket with a 5-7 lb weight on it. Wig head and shoulders (2x4) are mounted to the bucket handle. Legs on hinges are connected to the bottom of the bucket. When the wiper motor spins around, the weight offsets the center of gravity on the bucket causing it to rock and sway back and forth. Hopefully this will help you get started. If you have questions, ask and I'll try to help try and answer them for you.
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