[hackerspaces] Shop Access Control System

Tim Krabec tkrabec at gmail.com
Thu Aug 13 19:30:42 CEST 2009

I read that das-labor has a usb based entry system(
https://www.das-labor.org/wiki/AnonAccess/en) they appear to be down
but that seems like it might be a much cheaper way of doing entry and you
could even send out files that are coded to expire at a certain day/time, ie
just email they key to have people put on a usb key.

On Thu, Aug 13, 2009 at 1:24 PM, john arclight <arclight at gmail.com> wrote:

> Hi all,
> 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
> and robust.
> 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,
> etc.
> Does anyone have a source for new or used outdoor keypads that aren't
> US$250+ each?
> Thanks,
> Arclight
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Tim Krabec
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