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Becky’s latest project over at adafruit shows off some of the possibilities of the cool surplus vending machine coin acceptors they just added to their catalog. It has an Arduino for brains, an LCD shield to report your balance, and an LED that makes piggy squeal glow when you feed him teh monies. The more loot in your hoard, the brighter he glows. And of course it’s done with the usual sparkling clarity and attention to detail that Becky brings to all her videos.

I have to say, looking at those coin acceptor modules has me scheming one of those machines that trains birds to trade coins they find on the ground for food. [Thanks, Becky!]

How-To: Electronic Piggy Bank

Sean Michael Ragan

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c’t – Magazin für Computertechnik, and The Wall Street Journal.


  • http://makezine.com/2014/08/04/coin-slot-activated-projections/ Coin Slot Activated Projections | MAKE

    […] image. Users are able to interact with their device by dropping a piece of cold, hard, cash into an adafruit coin acceptor, which is controlled by an Arduino Uno, activating the projection of a digital […]

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