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1 Small Speaker (located on the back of the board)
you can not leave it in dry circumstances
the corresponding upper computer is provided to allow you to conveniently read data by a PC
Switch between automatic mode and manual transmission mode
PN532 NFC HAT for Raspberry Pi, I2C / SPI / UART ISG1321 1 Small Speaker (located onPN532 NFC HAT for Raspberry Pi, I2C SPI UART Overview This is a Raspberry Pi NFC HAT based on PN532 operating in the 13. 56MHz frequency range. It supports three communication interfaces: I2C, SPI, and UART. NFC (Near Field Communication) is a wireless technology allows contactless point to point data communication between devices within a short distance of 10 cm. It is widely used in applications such as access control system, smart tickets, meal
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