Bare bones, webservice-based access control for use with an RFID reader and Ethernet shield
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Open Access Control - HTTP Minimal Edition

AKA Open Access Control Interlock

Photo of interlock circuit board Photo of interlock prototype

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. Please see for the main/full version.

For more info, contact @willbradley on Twitter.


  • This folder
    • Open Access Control folder
      • Open Access Control.ino (Arduino code -- open from the Arduino IDE.)
    • libraries folder (copy the contents of this folder to your Arduino program's libraries folder and restart the Arduino program.)
      • ShiftLCD folder
        • keywords.txt
        • ShiftLCD.cpp
        • ShiftLCD.h
      • PCATTACH folder
        • keywords.txt
        • PCATTACH.cpp
        • PCATTACH.h
      • Wiegand26 folder
        • keywords.txt
        • WIEGAND26.cpp
        • WIEGAND26.h
    • hardware folder
      • open-access-interlock.brd