MFRC522 RFID Module
The MFRC522 is a popular module that allows your projects to read and write information to 13.56MHz RFID cards and key fobs using a wireless radio signal. It’s the standard choice for building contactless identification systems.
- Function: Reads and writes data to contactless cards (e.g., Mifare series).
- Interface: Connects to microcontrollers like Arduino via the SPI protocol.
- Read Range: Typically up to 5 cm.
- ⚠️ Voltage: Must be powered with 3.3V. Connecting its VCC pin to 5V will likely damage the module.
- Ideal for: Access control systems, attendance tracking, and interactive projects.
Common Applications
- Access Control Systems: Creating keyless entry systems for doors and gates.
- Attendance Tracking: Building automated systems for schools or workplaces.
- Inventory Management: Tracking products and assets in a warehouse.
- Contactless Payments: The same underlying technology used in tap-to-pay systems.
- Interactive Projects: Triggering actions in an art installation or game when a specific card is presented.
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