Here is a silly money making idea that you might use at a trade show.
A closed box with a reset button accepts coins through a slot. If a certain combination of change is provided, the box opens.
You would use it at a trade show with some signage as a fund raiser. If someone gets it open, they keep the money inside it.
You may restrict the types of coins that should go in, eg dimes and quarters, and have a maximum number of coins in the sequence, and maybe split the box if someone gets it.
Easy to make with an arduino and a couple of 3D printered, or laser cut parts, I'm sure.
Thoughts?
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* Alejandro Erickson
* PhD Candidate
* Computer Science
* University of Victoria
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