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This RC522 module is designed to read and write RFID cards and tags with ease, for Arduino and Raspberry Pi projects, with low power consumption and wide compatibility for makers and professionals. It has a built-in PCB antenna, so nothing extra needs to be wired for basic operation.
It supports the ISO/IEC 14443 Type A protocol, which covers many common contactless cards and tags, and is compatible with Arduino, ESP32, ESP8266, NodeMCU, STM32 and Raspberry Pi.
Operating voltage is 3.3 V DC, operating current is 13 to 26 mA and idle current is 10 to 13 mA. The operating frequency is 13.56 MHz and the interface is SPI. The maker highlights fast card detection and reliable tag identification, and describes it as compact and suited to access control, attendance systems, smart locks and general IoT projects.
Wire the SPI pins plus a reset line to your board's 3.3 V logic, taking care not to power the module at 5 V, then install an MFRC522-compatible library and run the UID read example with the card and key tag that come with it.
Beginners and hobbyists who want a low-cost RFID reader/writer with everything needed to start testing straight away.
If card reads are unreliable, move the card closer and hold it flatter against the antenna area, since 13.56 MHz coupling falls off quickly with distance. Check that your library's reset pin matches your wiring, and avoid running long, unshielded SPI wires, which can pick up noise and cause missed reads.
13.56 MHz.
Yes, a built-in PCB antenna.
3.3 V DC.
Arduino, ESP32, ESP8266, NodeMCU, STM32 and Raspberry Pi.
The RC522 module, an RFID card, an RFID key tag and a pin header.
| Brand | Generic |
|---|---|
| Frequency | 13.56MHz |
| Kit Includes | RFID Card, Key Tag |
| Selling unit | PCS |
