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.

1. Stack expansion board on top of Arduino, and then place PN532 on top of expansion board

2. Connect LCD screen to I2C port on expansion board

3. Connect servo motor as shown:

4. Flash .ino sketch to board

5. 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.