This is a stripped-down version of the 23b hackerspace’s Open Access Control system, intended for embedded use with an RFID reader and Ethernet shield for authenticating Wiegand RFID cards with a webservice.
For code, schematics and circuitry, check out https://github.com/zyphlar/open-access-control-minimal-http
WARNING, there is an error in the circuitry here. One of the pins from the shift register isn’t going to the LCD screen as intended.
The webserver component isn’t uploaded yet either; the interface simply relies on a webserver (in the code at http://10.1.1.1/~access/access?id=YOURID&device=THISDEVICE ) which returns ^username|OK$ when YOURID is a valid ID for accessing THISDEVICE. The username is then displayed on the LCD.
Original Link: https://willbradley.name/2012/01/12/rfid-interlock-web-enabled/
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