Arduino RFID program Output Arduino serial monitor RFID output (input ^ input ^ input ^ input ^ input = input)) If((input ^ input ^ input ^ input ^ input = input) & Serial.print(input) // Print RFID tag number While(Serial.available() & count < 12) // Read 12 characters and store them in input array Serial.begin(9600) // begin serial port with baud rate 9600bps Passive RFID Tag Block Diagram Pin Out EM-18 RFID Reader Module – Bottom View Pin No.Ĭonnections Circuit Diagram Interfacing EM-18 RFID Reader Module with Arduino – Circuit Diagram Breadboard Wiring Interfacing EM-18 RFID Reader with Arduino Uno – Breadboard Wiring Arduino Sketch int count = 0 // count = 0Ĭhar input // character array of size 12 RFID – System Principleīy changing the modulation current through the coils, tag will send back the information contained in the factory programmed memory array. These passive RFID tags mostly consist of CMOS IC EM4102 which can get enough power for its working from the field generated by the reader.
The module radiates 125KHz through its coils and when a 125KHz passive RFID tag is brought into this field it will get energized from this field. It can be directly interfaced with microcontrollers using UART and with PC using an RS232 converter. It provides both UART and Wiegand26 output formats.
It can be used for a variety of projects.ĮM-18 RFID reader is one of the commonly used RFID reader to read 125KHz tags. It features low cost, low power consumption, small form factor and easy to use.
Arduino Uno is an opensource physical computing platform based on ATmega328 microcontroller and provides a development environment for writing software for the board.
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