[hackerspaces] Shop Access Control System
arclight at gmail.com
Thu Aug 13 19:24:00 CEST 2009
I'm working on an open-source "Alarm Shield" for the Arduino. It will have
a 5V/12V bus, NO/NC 10A relays, sensor zone inputs and 2 keypad inputs. We
plan to use the Ethernet shield for event-based logging and alerting to a
remote server. I like the work the Das Labor folks have done, and I'd like
to extend this idea into an easy-to-install "shield" format.
We have found reasonably-priced door hardware (US$50-150) that will adapt
the various standard commercial doors to electric locking with minimal
modification. The alarm sensors and assorted hardware are also inexpensive
The biggest challenge I'm having is finding a nice heavy-duty keypad or
keypad/prox-card reader to install outside. I would prefer to use
off-the-shelf Wiegand-26 or a similar published protocol.
While we could use one of the inexpensive RFID readers, I'd like to be able
to use a keypad for one-time opening codes, letting someone in for the day,
Does anyone have a source for new or used outdoor keypads that aren't
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