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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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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
April 3rd, 2007
[...] You may remember an RFID project that was featured here last year by The Digital Dawg Pound. Nick has come up with a new and improved RFID Door Entry System. Video after the jump. “I decided to try and improve the reliability and responsiveness of my previous RFID front door project (based around a client / server design), by re-implementing it using the Parallax BASIC Stamp 2e, and the 13.5MHz APSX RW-210 RFID reader as a standalone device. I was also looking to gain some practical experience with BASIC Stamp programming. [...]
June 8th, 2007
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
June 12th, 2007
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.
September 29th, 2007
“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.
October 11th, 2007
i want more neet diagram
February 7th, 2008
plzz can u give me the working of door locking system rfid .ie its circuit operation plzzzz
thank you buddy
July 17th, 2008
hello there…. can u plz give me detail circuit and apparatus involved….
thnak u…
October 28th, 2008
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..
October 28th, 2008
Hi Wan,
Click on the link in the article to read more about this project.
October 29th, 2008
thx Alan…that helpful..i didnt see that..
October 29th, 2008
Can i just change the database storage to local host??
because this RFID front DOOR LOCK using tcp ip..
November 11th, 2008
hai…
plz give more spec schematic,components,microcontroller and programable
thx bro…
April 20th, 2009
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.
August 28th, 2009
sir, we are going to go using rfid automatic doorlocking system