Thread: Air blast trigger?

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I'm not sure how to get this done and thought maybe one the the more experienced members can give me some pointers or point me in the right direction.

I have a dark tunel that the people will be walking through. I have an air compressor and would like to some how set it up so that when the people walk by they trigger a blast of air that shoots at them to give them a scare. I was thinking maybe something that is stepped on that triggers the blast of air.

Thats a simple one....get an old dishwasher solenoid and run air through it instead of water. Use a standard light style switch to trigger it. There are 2 contacts on the switch to run power too.