RC522 MFRC522 RFID Door Unlock w Arduino

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=uTXeLjWF1BU

For details and code follow link: • thanks for http://www.dronmarket.com for sponsoring me. • http://forum.arduino.cc/index.php?top... • Arduino RC522 RFID Door Unlocker • July/2014 Omer Siar Baysal • Unlocks a Door controls a relay actually • using a RC522 RFID reader with SPI interface on your Arduino • You define a Master Card which is act as Programmer • then you can able to choose card holders who able to unlock • the door or not. • Easy User Interface • * • Just one RFID tag needed whether Delete or Add Tags • You can choose to use Leds for output or • Serial LCD module to inform users. Or you can use both • * • Stores Information on EEPROM • * • Information stored on non volatile memory to preserve • Users' tag, Master Card ID will be hard coded on Arduino's Flash • No Information lost if power lost. EEPROM has unlimited • Read cycle but 100,000 limited Write cycle. • Security • * • We are going to use Tag's Unique IDs, But since this module • and Tags are cheap, I guess their IDs not so Unique. • * • I think it is not secure to only use Tags' UID • to verify Tags' users who want to unlock a door. • * • MFRC522 Library also lets us to use some authentication • mechanism, writing blocks and reading back • and there is great example piece of code • about reading and writing PICCs • here http://makecourse.weebly.com/week10se... • * • If you serious about coding and security • you should really check Mıfare's datasheet • We are going to use completely INSECURE way to • Unlock a door. • * • And there is a note on Datasheet which mentions aboout that • Note: The use of Single Size UIDs unique ones might end soon, • since the number of usable IDs is limited to approximately • 3.7 billion pieces only. • * • If you rely on heavy security, figure it out how RFID system • can be secure yourself personally very curious about it • * • Also there are always security • issues if there is a LOCK actually. • Credits • * • Omer Siar Baysal who put together this project • * • Idea and most of code from Brett Martin's project • http://www.instructables.com/id/Ardui... • www.pcmofo.com • * • MFRC522 Library from miguelbalboa • https://github.com/miguelbalboa/rfid • * • Arduino Forum Member luisilva for His Massive Code Correction • http://forum.arduino.cc/index.php?top... • http://forum.arduino.cc/index.php?act... • * • License • * • You are FREE what to do with this code • Just give credits who put effort on this code • * • PICC short for Proximity Integrated Circuit Card aka RFID Tags

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