[sudoroom] electronic access

Susan Werner heinousbutch at gmail.com
Mon Nov 19 06:08:11 CET 2012 

I haven't been to sudoroom, much less seen the door. When could someone give me
a tour of the place or just let me in? 

What work's already been done on the access control thing and by whom? 

-- 
Susan

On Nov 18 20:55, Jae Kwon <jkwon.work at gmail.com> wrote:
> Thanks for the writeup, Susan.
> 
> I'm doing some research online on this now. If you want to chat live, ping me on IRC at #sudoroom or find me on #sudoroom_access.
> 
> ## Electric Strike
>  * Can the electric strike be installed easily, or does it require cutting the door or wall?
> 
> ## Internal Door Thing
>  * What is the mechanism by which the vertical bars retract?
>  * What existing device can automate this retraction without modifying the external panic bar mechanism?
>  * How much does it cost?
> 
> ## External Door Thing
>  * If all fails, then we can definitely make an external device that will not obstruct the original door mechanism, by 3d printing a robotic pair of pushers. Who's interested in this project?
>  * We will learn how to use Blender and/or Sketchup (whichever is better suited for modification of gear and lever systems),
>  * and we will scour the internet and Thingiverse for existing works to fork from,
>  * and we'll be doing some basic arduino programming as well
> 
> ## Interim Solution
>  * Who's going to be at SudoRoom when? We need to keep a calendar of key-keepers, who will be responsible for handing keys etc.
>  * Someone needs to create this very specific Google Calendar and invite us.
>  * Who has the keys now? How many are left?
>  * Who is willing to volunteer to be at SudoRoom at future dates and hours? I'm willing to be there once a week until we get a long term solution. We need more volunteers.
> 
>  - Jae
> 
> 
> 
> 
> On Nov 18, 2012, at 8:17 PM, Susan Werner <heinousbutch at gmail.com> wrote:
> 
> > What's generally used in these cases is what's called an electric strike:
> > (see http://en.wikipedia.org/wiki/Electric_strike or 
> > http://www.accesshardware.com/press/AHS%20HES%20CompleteGuide.pdf )
> > 
> > An electric strike is a device that is installed in the doorframe that frees
> > the bolt (and thus the door) to move even when the bolt is extended. 
> > 
> > Another option is to replace the entire panic bar is replaced with a panic bar 
> > with an internal delocking mechanism that can retract its bolt when power is 
> > applied. 
> > 
> > What should *not* be done is any modification of the panic bar -- doing so is 
> > likely to violate fire codes / life safety codes. In most building codes, there
> > are strict requirements about what's allowed (and not) on doors with panic bars
> > and from what I understand, modifying the panic bar is likely to cause a code
> > violation. (an electric strike doesn't interfere with any of the functioning of 
> > a panic bar, so those are OK)
> > 
> > Once you have a something that unlocks when power is applied, all you need to 
> > do is interface that with a 3.3V / 5V logic output (relay + transistor with the
> > right protection diodes is an easy way to go) and connect that to a computer. 
> > 
> > -- 
> > Susan
> > 
> > On Nov 18 19:08, Andrew <andrew at roshambomedia.com> wrote:
> >> Hi Susan,
> >> 
> >> Last I heard we were going to get an estimate from a door guy and then see
> >> if we could do it our selves for cheaper. The problem we have is that the
> >> outside facing door is one of those push bar doors. We aren't sure how to
> >> approach replacing the lock with an rfid or card reader. Do you have any
> >> experience with that?
> >> 
> >> Thanks,
> >> Andrew
> >> 
> >> 
> >> On Sun, Nov 18, 2012 at 6:41 PM, Susan Werner <heinousbutch at gmail.com>wrote:
> >> 
> >>> What's the status on the access things? I'm interested in helping out --
> >>> I've
> >>> already built very similar things (electric strike + magnetic card reader
> >>> interfaced with a WR850G wireless router running openwrt (i interfaced the
> >>> e-strike to the GPIO pins and the magnetic card reader to its serial port).
> >>> 
> >>> I also have a working beaglebone running linux (it's a small ARM board
> >>> with a
> >>> hellton of GPIO pins, a handful of serial ports, USB, and ethernet) and I'm
> >>> willing to use it for the door access control.
> >>> 
> >>> --
> >>> Susan
> >>> 
> >>> On Nov 18 16:57, Andrew <andrew at roshambomedia.com> wrote:
> >>>> All updates on the access issues. I tried to get in today, but no one was
> >>>> there or heard the buzzer.
> >>>> 
> >>>> --Andrew
> >>>> 
> >>>> 
> >>>> On Tue, Nov 13, 2012 at 12:48 PM, Jenny Ryan <jenny at thepyre.org> wrote:
> >>>> 
> >>>>> There is a meta-organizational meetup at 6pm before the meeting
> >>> tomorrow.
> >>>>> 
> >>>>> Jenny
> >>>>> http://jennyryan.net
> >>>>> http://thepyre.org
> >>>>> http://thevirtualcampfire.org
> >>>>> http://technomadic.tumblr.com
> >>>>> 
> >>>>> `~`~`~`~`~`~`~`~`~`~`~`~`~`~`~`~`~`~`
> >>>>> "Technology is the campfire around which we tell our stories."
> >>>>> -Laurie Anderson
> >>>>> 
> >>>>> "Storytelling reveals meaning without committing the error of defining
> >>> it."
> >>>>> -Hannah Arendt
> >>>>> 
> >>>>> "To define is to kill. To suggest is to create."
> >>>>> -Stéphane Mallarmé
> >>>>> ~`~`~`~`~`~`~`~`~`~`~`~`~`~`~`~`~`~`
> >>>>> 
> >>>>> 
> >>>>> 
> >>>>> On Tue, Nov 13, 2012 at 12:32 PM, Andrew <andrew at roshambomedia.com>
> >>> wrote:
> >>>>> 
> >>>>>> Sounds great. I'll be there.
> >>>>>> 
> >>>>>> 
> >>>>>> On Mon, Nov 12, 2012 at 11:06 PM, Jonoakland <
> >>>>>> bayopensourcehardware at gmail.com> wrote:
> >>>>>> 
> >>>>>>> I'm willing and able to help with the construction side of the
> >>>>>>> electronic access system I propose anyone interested in the
> >>> electronic
> >>>>>>> access project meets before the meeting for brainstorming 6 o'clock
> >>>>>>> Wednesday and then after the meeting also...
> >>>>>>> 
> >>>>>>> _______________________________________________
> >>>>>>> sudoroom mailing list
> >>>>>>> sudoroom at lists.hackerspaces.org
> >>>>>>> http://lists.hackerspaces.org/mailman/listinfo/sudoroom
> >>>>>>> 
> >>>>>>> 
> >>>>>> 
> >>>>>> 
> >>>>>> --
> >>>>>> -------
> >>>>>> Andrew Lowe
> >>>>>> Cell: 831-332-2507
> >>>>>> http://roshambomedia.com <http://roshambomediacom>
> >>>>>> 
> >>>>>> 
> >>>>>> 
> >>>>>> _______________________________________________
> >>>>>> sudoroom mailing list
> >>>>>> sudoroom at lists.hackerspaces.org
> >>>>>> http://lists.hackerspaces.org/mailman/listinfo/sudoroom
> >>>>>> 
> >>>>>> 
> >>>>> 
> >>>> 
> >>>> 
> >>>> --
> >>>> -------
> >>>> Andrew Lowe
> >>>> Cell: 831-332-2507
> >>>> http://roshambomedia.com
> >>> 
> >>>> _______________________________________________
> >>>> sudoroom mailing list
> >>>> sudoroom at lists.hackerspaces.org
> >>>> http://lists.hackerspaces.org/mailman/listinfo/sudoroom
> >>> 
> >>> 
> >>> --
> >>> 
> >>> 
> >>> 
> >> 
> >> 
> >> -- 
> >> -------
> >> Andrew Lowe
> >> Cell: 831-332-2507
> >> http://roshambomedia.com
> > 
> > -- 
> > 
> > 
> > _______________________________________________
> > sudoroom mailing list
> > sudoroom at lists.hackerspaces.org
> > http://lists.hackerspaces.org/mailman/listinfo/sudoroom
> 

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