{"title":"Adafruit PN532 NFC/RFID Controller Shield for Arduino + Extras","handle":"adafruit-pn532-nfc-rfid-controller-shield-for-arduino-extras","url":"/products/adafruit-pn532-nfc-rfid-controller-shield-for-arduino-extras","description":"The Adafruit PN532 NFC/RFID Controller Shield brings 13.56 MHz NFC and RFID capabilities to your Arduino. Built around the PN532 chipset — the most widely used NFC controller, found in virtually every NFC-enabled phone and device — it can read and write to NFC/RFID tags and cards of Type 1 through 4.\n\nThe shield was designed by RF engineers using professional test equipment to achieve a 10 cm (4 inch) read range — the maximum possible at 13.56 MHz. The tuned stripline antenna can read through non-metal barriers, so you can mount the shield behind a plastic plate using standoffs.\n\nKey Features\n\n\nPN532 NFC Controller – Read and write NFC/RFID Type 1–4 tags and cards at 13.56 MHz\n\n10 cm Read Range – Professionally tuned stripline antenna for maximum range\n\nI2C or SPI Interface – Default I2C on A4/A5 with interrupt on D2; switch to SPI via solder jumpers\n\nInterrupt Pin – Digital pin 2 pulls low automatically when a card or phone is in range (no polling needed)\n\nArduino Shield Form Factor – Plugs directly onto Arduino UNO, Duemilanove, Mega R3, and compatible boards\n\nIncludes 13.56 MHz RFID/NFC 1K Card – Ready to test out of the box\n\n\nInterface Details\n\n\nI2C (default) – Uses A4 (SDA) and A5 (SCL) plus D2 for interrupt; shareable with other I2C devices\n\nSPI (optional) – Enable by shorting two solder jumpers on top of the PCB; uses any 4 digital pins\n\n\nCompatibility\n\nArduino UNO, Duemilanove, Diecimila, NG\nArduino Mega R3 and later (Mega R2 and earlier require manual I2C wiring)\nOther Arduino-compatible boards with standard shield headers\n\n\nIdeal For\n\nRFID access control and tag reading/writing\nNFC project prototyping and development\nAttendance tracking and asset management systems\nInteractive installations triggered by NFC tags\n\n\nPackage Contents\n\n1× Adafruit PN532 NFC/RFID Shield (with tuned 13.56 MHz stripline antenna)\n1× 36-pin 0.1\" header\n1× 13.56 MHz RFID/NFC 1K card\n\n\n\nNote: On v1.0 boards, the SEL0 and SEL1 silkscreen labels are reversed. This only affects users switching to UART or SPI mode — the default I2C mode is unaffected.\n\n\nResources\n\nAdafruit PN532 NFC/RFID Learning Guide\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":13618,"title":"Default Title","sku":"AF-789","price":82.75,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}