Hello
I want to present my latest electronic development to the public:
A do-it-yourself electronic RFID door opener.
You just mount the Adafruit PN532 RFID reader on the inside of the door which reads the RFID card through the closed door.
A powerfull backup battery assures that the device is working even after a power failure of several days.
The Teensy microprocessor detects when the battery needs charging.
Provides a very easy to use interface accessible through an USB cable with a terminal program which lets you add or remove users within a few seconds.
You can store 64 users with their card ID's in the EEPROM of the microprocessor.
If you lose the RFID card or token, you can easily remove the old one and add the new one without changing the lock.
I designed a layout for the board that can be soldered by an electronics beginner
You find circuit diagram, layout diagram, source code and a detailed description in my article on Codeproject:
http://www.codeproject.com/Articles/1096861/DIY-electronic-RFID-Door-Lock-with-Battery-Backup
I want to present my latest electronic development to the public:
A do-it-yourself electronic RFID door opener.
You just mount the Adafruit PN532 RFID reader on the inside of the door which reads the RFID card through the closed door.
A powerfull backup battery assures that the device is working even after a power failure of several days.
The Teensy microprocessor detects when the battery needs charging.
Provides a very easy to use interface accessible through an USB cable with a terminal program which lets you add or remove users within a few seconds.
You can store 64 users with their card ID's in the EEPROM of the microprocessor.
If you lose the RFID card or token, you can easily remove the old one and add the new one without changing the lock.
I designed a layout for the board that can be soldered by an electronics beginner
You find circuit diagram, layout diagram, source code and a detailed description in my article on Codeproject:
http://www.codeproject.com/Articles/1096861/DIY-electronic-RFID-Door-Lock-with-Battery-Backup