[sudoroom] electronic access

Jae Kwon jkwon.work at gmail.com
Mon Nov 19 06:31:52 CET 2012 

I found this: http://216.171.160.5/media/pdf/2011/AR_AC-ElecOptionsED.pdf

It looks like they have an option for an electric solenoid system for the panic bar.
Whoever made our thing might have options for a solenoid thing as well, or we might already have it installed.
We should figure out who made our panic bar and ask.

I'll try to swing by Tuesday afternoon, unless somebody can figure it out on Monday. Then, call them, or let me know and I'll call them and ask for some info and quote.

Searching for "electric latch retraction kit" yields some results. Another solenoid one costs $400+ dollars.

Remaining questions:

* Are there cheaper solenoid kits?
* Who made our panic bar? (maybe George knows?)


On Nov 18, 2012, at 8:55 PM, 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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