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Arduino Project Handbook by Mark Geddes

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PROJECT 23: WIRELESS ID CARD ENTRY SYSTEM

IN THIS PROJECT, WE’LL USE A RADIO FREQUENCY IDENTIFICATION (RFID) READER TO BUILD A WIRELESS ID CARD ENTRY SYSTEM.

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PARTS REQUIRED

• Arduino board

• Breadboard

• Jumper wires

• Mifare RFID-RC522 module

• Tower Pro SG90 9g servomotor

• Piezo buzzer

• Red LED

• Green LED

• 2 220-ohm resistors

LIBRARIES REQUIRED

• RFID

• SPI

• Wire

• Servo

• Pitches

HOW IT WORKS

An RFID reader uses wireless technology to identify a card, tag, or key fob without contact. The reader will respond when the card is placed near ...

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