RFID Front Door Lock

18

The Digital Dawg Pound has a created a RFID Front Door Lock that uses inexpensive off the shelf electronics. There is a full listing of all the parts required on their site.

“The project works as follows: When a card is placed in front of the RFID reader it outputs a TTL serial signal representing the card’s unique ID. This is sent to the ‘TTL serial to Ethernet server’ module, which converts the serial data stream from the reader into TCP packets which are forwarded to a specified IP address / port. A custom C# application is listening on the specified port for a tag ID’s and once received will check if they are valid, and if so signal the NET-IOM to turn on a relay wait 2 seconds then turn it off again. The relay is connected to a buzzer, and electronic strike which is mounted on the door frame, and when powered allows the door to be pushed open.”


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18 Comments


  1. Here is a site with a similar project. All the plans, bill of materials, pcb files, code, etc… to build your very own RFID Door Lock and Monitoring System. Check it out: http://www.rfiddoorlock.com



  3. You can also just buy one too.
    The Mykey 2300 and Mykey 4000r are two that utilize RFID.
    I have the 2300 installed at my house.
    Got it from http://www.cydus-solutions.com


  4. A guest getting encription key through SMS from Hotel on his/her NFC compatible mobile phone,bypassing hotel front desk arrive in front of his/her allocated room.After opening a door lock he/she need still need plastic card to operate Energy control unit(ECU)to operate guest room,that means he/she need to contact hotel front desk.he/she can not bypass hotel front desk & straight way goes to guest floor.


  5. “Jason said on January 14th, 2007: Here is a site with a similar project. All the plans, bill of materials, pcb files, code, etc… to build your very own RFID Door Lock and Monitoring System. Check it out: http://www.rfiddoorlock.com”

    Yes it is, for 40 dollars.


  6. i want more neet diagram


  7. plzz can u give me the working of door locking system rfid .ie its circuit operation plzzzz

    thank you buddy


  8. hello there…. can u plz give me detail circuit and apparatus involved….
    thnak u…


  9. thx for the information…
    im currently study at local polytechnic at malaysia and i intend to do this for my final project…is there any link you guys can share with me..?
    plz give me more specific schematic, the pcb, component etc, using a local host for this rfid..thanks..


  10. Hi Wan,

    Click on the link in the article to read more about this project.


  11. thx Alan…that helpful..i didnt see that..


  12. Can i just change the database storage to local host??
    because this RFID front DOOR LOCK using tcp ip..


  13. hai…
    plz give more spec schematic,components,microcontroller and programable
    thx bro…


  14. The system could be made without the ethernet connection, although the ethernet connect allows things like entry logging and network alerts based on entry etc.

    For a standalone embedded solution, simply connect a RFID transciever to a PIC, or other MCU. Also if your using a transciever, you could use a reprogrammable EEPROM card as the ‘key’ and have the module change the door code after every use for added secruity (Although this wouldn’t work with multiple access points unless they are linked somehow). In the door opening sequence, you would need to also read the card again to check the new passcode was written correctly.

    The PIC code would just need to pickup UI (Unique Identifier) from the RFID, and the read the number sequence (passcode) stored in memory, check it against the known passcode. The generate a new code, store it in memory and transmit it to the EEPROM card (key). There could also be a different passcode for each UI (for each different key card). Essentially, it means each user has a 64 digit username, and a 2000 digit password that changes every time you use it.

    The exact details of the cicruit will depend on the RFID reader module and the MCU you use; but with a fairly decent understanding of electronics, and a good read through the datasheets you can figure it out.

    The only thing that worries me is wouldn’t it be easy to just stick a small RFID listening device and pickup with UI codes, and fake them with another circuit to gain access? I suppose the system could be used in conjunction with a pincode, but that reduces the convience somewhat.

    Still, using an external antennae the range can be about a meter or so. Keep the credit card shape key in your wallet and just walk up to the door.


  15. sir, we are going to go using rfid automatic doorlocking system

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