Lots of people done door lock arduino projects. But I' am looking for a front door lock that can turn electronicly and have a cilinder lock for normal key's. I found one lock from "Lips" http://www.lips.nl/catalog.php?id=61663 This lock can be turned by normal keys, but can also turn electonicly. And detect the status of the lock. Perfect for external solutions like the Arduino. Only problem is, this lock cost $ 2100,-! An alternative is using a replacement strike plate like this one. http://www.smarthome.com/5190S12/Electric-Door-Strike-12VDC-For-Schlage-5-S-12/p.aspx But this isn't a verry nice solution. And also does not detect if a door is locked.
Does anyone know of a lock with cilinder that can be controlled with an arduino?