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Scare Box solonoid/trigger/switch

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davidbenjamindix

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Scare Box

This project is a scare prank box. I have a long rectangle box with a wire-cage door at the front. Inside is a homemade scary as crap stuffed animal attached to a dowel. There are extension springs pulling on the cage door so when a switch (problem) is activated, the cage door gets pulled inside, and the animal comes shooting out. I just got my remote control (4 channel wireless 12-volt DC remote control) in the mail, and the only thing left is to figure out how to set off a trigger/switch to activate the spring mechanisms. I figured there are 2 or 3 ways to do this....if you have another, please let me know.
The first idea is to have a 12-volt motor make one cycle which turns a dowel that sets off the mechanism. The problem there is I would have to find some type of timer/relay that I could set so the motor only turns so far. I would also like the DC motor to operate in reverse so the animal can be pulled back in.
Another idea is to get some type of switch that extends and retracts with the dowel attached to it. Another idea might be some type of electromagnetic switch (I have about 400 neodymium magnets) that extends and retracts when the remote signals open/closed circuit. That's pretty much where I am right now. The stuffed animal is so creepy. I used the same material from my homemade ghillie suit, and used fire-engine red eyes (which will have LED lights shining on them). The idea is to trick someone into thinking it's a ferrit or something, when they get close to the box, press the button on the remote, and this thing comes flying out. It'll be awesome. What can I do about the switch? thanks.....David
 

Re: Scare Box

I think making a solenoid is the answer....but! I tried making a homemade solenoid. It's not working. I'm using 12V battery (2x 6V), a plastic pen tube with a nail for the core, and thick steel wire tightly wrapped around the pen tube. I think perhaps the wire is too thick. ??? ..and should i try and find a metal core instead of plastic?
 

David,

You might consider a windshield wiper motor with a cam and driving a lever arm attached to the critter. Two limit switches and no need to reverse the motor. The "IN" limit switch is already in the motor. You could add another limit switch that would stop the motor at the "OUT" position. With a lever arm, and using the fast winding on the motor you could achieve a fast attack of the critter. The slow speed winding would allow a slower withdrawal.

Just some thoughts.

Ken
 

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