[sudoroom] electronic access

[Susan Werner]

1. There's no need to get an 8600LR pushbar. We can shop around for any
pushbar that is electric *and* works on the door in question, and most
likely get a pushbar that's less expensive. 

We can also call the company and see if they have any way to retrofit 
the 8600 to have electric control. They probably will just tell us to 
buy a whole 8600LR pushbar, but in the event they have some retrofit
kit they're not publicizing on the internets, that could save us a 
bunch of money.

2. The $380 power supply is not just overpriced, it's more overpriced 
than the damn pushbar. A power supply with battery backup is pretty 
trivial to make, especially given that the power in question need not be
perfectly filtered. The parts for that shouldn't be more expensive than 
say, $80 or so. Making a 28 volt power supply that can output a handful 
of amps isn't hard, and I and others can make one.

3. I have a working beaglebone and a USB wifi adapter, which I'm 
willing to use here on the condition that it be put in a locked case 
(which is a good idea for security anyway) so it doesn't get stolen. 

-- 
Susan

On Nov 20 12:31, Marc Juul <juul at labitat.dk> wrote:
> On Tue, Nov 20, 2012 at 2:02 AM, Susan Werner <heinousbutch at gmail.com> wrote:
> > It's an 8600.
> 
> It seems like they don't sell a kit to turn a regular pushbar into an
> electric pushbar, so we'll have to get a new pushbar with the electric
> option. They're a bit over $600:
> 
> http://buyaccess.com/adams-rite-8600lr-narrow-stile-electric-latch-retraction-concealed-vertical-rod-exit-device?gdftrk=gdfV22700_a_7c1040_a_7c4922_a_7c8600LR
> 
> We should probably just get their official bendy-cable to run the
> power to it as well, since it's only $17:
> 
> http://buyaccess.com/securitron-tsb-c-door-cord-w-grey-black-caps
> 
> The electronic pushbar requires 28 VDC. The official power supply is
> crazy overpriced at $380:
> 
> http://buyaccess.com/adams-rite-ps-lr-power-supply
> 
> Unfortunately we'll void the warranty on the pushbar if we use any
> other power supply. I still think we should find a different 28 VDC
> power supply.
> 
> That puts our total at around $700 including tax and shipping.
> Installation should be free since George the landlord will have it
> installed for us.
> 
> Then comes the computer hardware. Susan suggested a Beagle bone, which
> costs about $80. We could add a wifi usb adapter to avoid running wire
> to the door, and I'm sure we have those lying around. Then we need the
> 28 VDC power supply and a relay. The relay is close to free, but I
> don't know where we'd get the 28 VDC power supply or how much that
> will cost us. Any ideas?
> 
> Let's add another $50 for magnetic stripe card and/or rfid reader.
> That'll be about $850 total, excluding the power supply (maybe we know
> someone who has a 28-30 VDC power supply of some not-insignificant
> amperage lying around?).
> 
> Now the question is: Do we just go ahead and order this stuff? Or does
> anyone know anyone who might be able to get this done for less?
> 
> -- 
> Marc