[hackerspaces] Open Access Control for Hacker Spaces v1.0

psytek psytek at alphaonelabs.com
Fri Apr 9 22:06:22 CEST 2010

This is awesome.  Thanks for releasing this.

Another cool thing to integrate is to automatically check-in to Foursquare
or similar.  We did this for our RFID system at Alpha One Labs.



On Fri, Apr 9, 2010 at 3:58 PM, john arclight <arclight at gmail.com> wrote:

> Hi all,
> We've got a preliminary hardware design together finally, along with
> the code.  Check out the schematic and download links for everything
> at:
> http://23bshop.blogspot.com/
> This system uses the Arduino Duemilanova board and so far has been
> breadboard tested to support:
> -DS1307 Real-time clock with battery backup
> -(2) Wiegand26 reader inputs (optoisolated)
> -(4) Alarm zone monitor ports using Analog0..3 (optoisolated)
> -(4) Relay outputs, rated to 10A/220VAC
> -Spare pins 10..13 to enable Ethernet shield use
> -Built in 12V unregulated, 5V regulated, 12V regulated supplies for
> alarm sensors, door hardware
> -Built in UPS (smart charger in next design)
> -Separate fuse protection for everything
> So this will basically allow 2 separate Wiegand26 door readers, 4
> independent relay outputs for unlocking doors or alarm sirens, 4
> inputs for alarm/other sensors, easy upgrade to Ethernet logging.
> (It's currently doing Syslog format via USB serial.) It has a built-in
> UPS backup, much like a commercial alarm system and it allows multiple
> power buses for motion detectors, fire sensors, etc that are separate
> form the logic bus. I also put an EMF kick-back diode in for the door
> hardware bus (unregulated 12V).
>  I would appreciate any feedback in terms of:
> 1. What additional features would be nice?
> 2. Any obvious design flaws.
> Thanks!
> John
> _______________________________________________
> Discuss mailing list
> Discuss at lists.hackerspaces.org
> http://lists.hackerspaces.org/mailman/listinfo/discuss
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