The NXT ATM Machine is built entirely from Lego parts and functions just like any other ATM machine.

The NXT ATM Machine is a fully functional ATM built entirely from LEGO parts and a RFID sensor. The machine was developed by Ron McRae who programmed it in the Not eXactly C (NXC) language. The machine can spit out change, take notes, keep track of different accounts and even retain the ATM card if wrong PIN is entered thrice. It has a functional numeric keypad that uses a combination of touch and light sensors.

Here's a video demonstration of the ATM machine:

The NXT Step

[via Makezine]

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