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In this article, a metal crack sensor based on chipless radio frequency identification (RFID) technology is proposed. It is used to monitor the angle and width of cracks in the Internet of Things (IoT ...

RFID-based attendance logging system built using the STM32F407G-DISC1 microcontroller and an RFID-RC522 module. It enables reading, saving, and logging attendance of RFID cards through UART serial ...