How vending machines can separate genuine coins from artificial coins


One of my childhood dreams was being able to fool a vending machine with 25 cent coin-like objects. I mean, how smart a machine like that can be, right? Wrong. It’s more like I was a dumb child.

These machines use light sensors to measure the size of a coin and electromagnets to detect the type of metal, thus determining what kind of coin it is. If you do not have the shape of a 25 cent coin and it was not built with one, you will not be a 25 cent coin for them.

As the video below explains, after identifying size and type of metal, the machine divides the coins into columns, diverting the counterfeit to the rejection duct. Return the change, the columns carefully loosen one coin at a time, casting them to the withdrawal site.

To get your order right, a computer hidden behind the buttons coordinates one of 32 matchbox-sized engines, turning it into a 360-degree spiral.

And if in the old days, the vending machines used to stop the snack from time to time, the modern ones have a sophisticated system to avoid a headache for customers: when falling, the object bought breaks a line of 10 bundles Of infrared light. If nothing passes through them, the computer repeats the process by spinning the spirals.

The whole system of what happens inside these automatic machines is very interesting.

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How vending machines can separate genuine coins from artificial coins

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