Print out your own wireless door lock

This is a nice build where the author uses an arduino like board with NFC built in to control a servo that locks/unlocks the door.  The downside, the NFC board is $40.  Bluetooth maybe a better…well cheaper…solution.  The other thing I do not like is there is no manual override.

http://www.3ders.org/articles/20150327-create-an-nfc-door-lock-with-the-qduino-mini-and-a-3d-printer.html

http://www.instructables.com/id/NFC-Door-Lock-with-the-Qduino-Mini-under-100/?ALLSTEPS

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