/* * HID RFID Reader Wiegand Interface for Arduino Uno * Written by Daniel Smith, 2012.01.30 * www.pagemac.com * * This program will decode the wiegand data from a HID RFID Reader (or, theoretically, * any other device that outputs weigand data). * The Wiegand interface has two data lines, DA…

Wiegand Data aFormat Reader and Arduino

jlukose6 August 27, 2016, 7:51pm 6

It worked when I shared ground, can someone explain why you have to do this

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