I'm trying to use a keypad and a NFC reader to control a motor to open a door. The keypad is used if a RFID card isn't available. How can ii program these two input devices devices. I can get both to work separately, but not together. Any suggestions?

NFC and keypad

marco_c May 8, 2014, 3:21am 2

Posting your code and circuit would be a good start to getting help.

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