LockMate is a NFC door lock that was designed with an Arduino Uno, a standard Arduino expansion board, a servo motor, an Adafruit PN532 NFC breakout board, and a 16x2 RGB LCD screen.
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Stack expansion board on top of Arduino, and then place PN532 on top of expansion board
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Connect LCD screen to I2C port on expansion board
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Connect servo motor as shown:
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Flash .ino sketch to board
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Enjoy!
If you look over the code, you'll notice we used the Stepper library. That doesn't mean you should connect a stepper motor. When building this project, please make sure you use a servo.