Near Field Communication (NFC), also known as short-range wireless communication, is a short-range high-frequency wireless communication technology that allows non-contact point-to-point data transmission (within ten centimeters) to exchange data between electronic devices. . This technology evolved from contactless radio frequency identification (RFID) and is backward compatible with RFID. It was first developed by Sony and Philips, and is mainly used to provide M2M (Machine to Machine) communication in handheld devices such as mobile phones. Because of the natural security of near field communication, NFC technology is widely used in POS mobile payment, bus cards, bank cards, access cards, water cards and other occasions.
Gravity: UART & I2C NFC Module I2C connection diagram (Arduino UNO)
Gravity: UART & I2C NFC Module UART connection diagram (USB to UART+PC)
Gravity: UART & I2C NFC Module UART connection diagram (MEGA2560)
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