29/09/2026
Card ko touch bhi nahi kiyaβ¦ phir device ne usse detect kaise kar liya? ππ‘
Meet the PN532 NFC Controller.
It's commonly used in electronics projects to communicate with compatible NFC cards, tags and devices using 13.56 MHz contactless technology.
The basic idea:
π³ CARD / TAG
β
π‘ RF COMMUNICATION
β
β‘ PN532
β
π» MICROCONTROLLER
The PN532 handles NFC communication, while a host microcontroller can communicate with it using interfaces such as IΒ²C, SPI or High-Speed UART, depending on the module and setup.
And PN532 isn't useful only for reading tags.
Depending on the implementation, it can support NFC functions associated with:
π Reader/Writer Mode
π³ Card Emulation
π² Peer-to-Peer Communication
That's why PN532 modules are popular for access-control prototypes, attendance projects, NFC experiments, smart systems, IoT and embedded-system projects.
π― Watch till the end to understand what's happening behind that simple TAP.
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