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need help with high school prom props
I am making a prop for my sons high school after prom which starts right
after the prom ends and goes to 4:00 AM. This gives the kids an alternative to getting drunk or in trouble other wise. It's a great program. This year I have been asked to make the small scale replica of the ball that drops at Times Square on New Years Eve. I have made the ball and intend to have it go up and down on a threaded shaft via a linear motor. I need a way to make it stop at the bottom, wait 2 -3 minutes and then reverse the DC current so the motor reverses and send the ball back up to the top. When it gets to the top I need it to wait 2-3 minutes, reverse the polarity to the motor so it goes down again. I will need this continuous motion of up and down to last the 4 hours of the party. I have found the motor that I think will work on Ebay http://cgi.ebay.com/ws/eBayISAPI.dll...tem=7514612658 but need help with the up, down and time delay part of this deal. Any help or guidance would be greatly appreciated. They have also asked me to make a device that they can attach a mock up Planters peanuts can to that will make the mock-up turn, and tilt so the can will empty out peanuts and then go back to the upright position. This is to replicate the one that is now in Times Square. If anyone can help me with that project I would also be most appreciative.. Thank you, Rudy |
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